Gas pressure washers are units that have a gas-fueled engine and, compared to electric pressure washers, are more powerful and offer higher mobility. Gas pressure washers are best suited for rural areas and construction sites due to their capacity to clean nasty surfaces and to their lack of power cords.
Best gas pressure washer brands are SIMPSON Cleaning, Generac, Karcher, A-iPower, PowerBoss, and Briggs & Stratton. The pros and cons of their products are presented in the gas pressure washer reviews.
The factors that need to be analyzed before purchasing a gas pressure washer are price, power output, power source, water pressure strength, and the types of terrain they should be carried onto. These factors are detailed in this gas pressure washer buying guide.
The best gas pressure washers are listed below:
- Simpson Cleaning MSH3125 Megashot Gas Pressure Washer
- Simpson Gas Pressure Washer PS68043 4400 PSI 4.0 GPM
- Generac SpeedWash 7122
- SIMPSON Cleaning ALH4240 4200 PSI
- Generac Gas Pressure Washer Kit 3100 PSI 2.5 GPM
- The Simpson Gas Pressure Washer GX270 4000 PSI 3.5 GPM
- SIMPSON Cleaning PS3228 PowerShot
- Simpson MS60763 Megashot
- Generac 6922 with 2800 PSI
- Karcher G2700
- Simpson Cleaning 2400 PSI
- A-iPower APW2700C 7HP High Pressure Washer
- PowerBoss Gas Pressure Washer
- Generac 6602 OneWash 3100 PSI
Best Gas Pressure Washers Comparison Chart
| PRODUCT | DETAILS | ||
|---|---|---|---|
 | Simpson Cleaning MSH3125 Megashot Gas Pressure Washer |
| View On Amazon |
 | Generac SpeedWash 7122 |
| View On Amazon |
 | SIMPSON Cleaning ALH4240 4200 PSI |
| View On Amazon |
 | Generac Gas Pressure Washer Kit 3100 PSI 2.5 GPM |
| View On Amazon |
 | The Simpson Gas Pressure Washer GX270 4000 PSI 3.5 GPM |
| View On Amazon |
 | SIMPSON Cleaning PS3228 PowerShot |
| View On Amazon |
 | Simpson MS60763-S Megashot |
| View On Amazon |
 | Simpson Gas Pressure Washer PS68043 4400 PSI 4.0 GPM |
|
Best Gas Power Washer Reviews (Updated List)
1. Simpson Cleaning MSH3125 Megashot Gas Pressure Washer
Simpson Cleaning is a brand with a history of more than 60 years in the pressure washer industry renowned for producing durable and reliable power washers that have an industrial design.
The Simpson Megashot MSH3125 gas pressure washer is a powerful unit suited for light and medium cleaning tasks. These tasks include washing surfaces such as garage doors, fences, sidewalks, outdoor furniture, patios, and preparing outdoor walls for painting jobs.
The Simpson Megashot MSH3125 stands out among its competitors due to its superior quality engine and pump, which provide a reliable uniform flow even with prolonged use. This cleaning unit is equipped with a GC190 engine powered by Honda, that generates 3200 PSI at a maximum water flow rate of 2.5 GPM, totaling 7750 CU.
The Simpson Megashot MSH3125 gas power washer is supplied with an OEM Technologies axial cam pump that requires no maintenance. The pump’s crankcase is filled with oil by the manufacturer and does not require regular lubricant changes, reducing the need for further investment in maintenance.
The Simpsons Cleaning Megashot MSH3125 gas pressure washer costs around $400.
The Simpson Megashot MSH3125’s pump is made of non-corrosive anodized die-cast aluminum and the nozzle tips included in the package are made of stainless steel. These high-quality materials are what give this pressure washer a long lifespan.
The accessories of the Simpsons Megashot MSH3125 power washer include an abrasion resistance MorFlex hose that measures 25 feet, 5 quick connect nozzle tips, an ergonomic spray gun, a lance, and a siphon tube. The hose is long-lasting because it is flexible and made of non-marring materials. This unit’s gun is supplied with a trigger-lock mechanism that eliminates the risk of unintentional operation.
The Simpson Megashot MSH3125 weighs 65 pounds, measures 26 x 18 x 35 inches, and has a compact design that makes it easy to store. This gas power washer has a welded steel frame equipped with two 10” pneumatic wheels that offer high mobility.
The Simpson Megashot MSH3125 is accompanied by an operator manual providing detailed instructions regarding maintenance, which is really easy to perform. The connectors, the water inlet filter, and the nozzles of this unit need to be cleaned regularly. This pressure washer’s engine oil needs to be changed after the first 5 hours of use and then after every 50 hours. This model needs to be winterized in order to benefit from the warranty policy.
The Simpson Megashot MSH3125 gas pressure washer is backed by a 5-year limited warranty for the frame and a 2-year limited warranty for its Honda engine. It also includes a 1-year limited warranty for the pump and a 60-day limited accessory warranty.
The advantages of the Simpson Megashot MSH3125 gas pressure washer are as follows:
- The Simpson Megashot MSH3125 has a detergent injection system that combines water with cleaning solutions in order to improve effectiveness during tasks that require deep cleaning.
- The Simpson Megashot MSH3125 is equipped with a thermal relief valve that lowers the temperature inside the pump when it gets too high, expanding its lifespan.
- The Simpson Megashot MSH3125 has a Bypass mode that allows the user to release the trigger gun without turning off the engine.
- The Simpson Megashot MSH3125’s pump crankcase is sealed in order to prevent water contamination and lubricant failure.
- The Simpson Megashot MSH3125 comes with onboard storage for the accessories.
- The Simpson Megashot MSH3125’s hose connection is easy to access.
The disadvantages of the Simpson Megashot MSH3125 gas pressure washer are as follows:
- The Simpson Megashot MSH3125 lacks an onboard soap tank.
2. Generac SpeedWash 7122
Generac is a brand established in 1959 that first specialized in the manufacturing of generators. Over time, this brand has expanded its production and has become one of the most high-rated names among gas pressure washer manufacturers.
The Generac SpeedWash 7122 is a reliable gas pressure washer perfect for medium to heavy-duty cleaning jobs. This powerful unit works with cold water and is suited for a wide variety of applications, from washing decks to power washing RVs.
The Generac SpeedWash 7122 power washer is unique because of the high-efficiency levels it provides in less time than other similar products. This combination of advantages is due to the power of the unit’s engine and pump, and also to the accessories that this pressure washer comes with.
The Generac SpeedWash 7122 gas pressure washer prices range between $600 and $950.
The Generac SpeedWash 7122 is equipped with an axial cam pump and a Generac 196cc OHV engine that can deliver up to 3200 PSI at a maximum water flow rate of 2.7 GPM. The total cleaning power of this power washer is 8640 CU.
The accessories that the Generac SpeedWash 7122 comes with are designed to reduce cleaning time. The 12” broom is provided with nozzles that finish the task 4 times faster than conventional nozzles. This broom is suited for decks, patios, and driveways. The turbo nozzle suited for bricks and concrete surfaces delivers a rotating pinpoint stream that cleans surfaces 30% faster than regular nozzles. The accessories also include a soap blaster that can clean 3 times faster than standard nozzle tips. This unit also comes with an ergonomic power gun, a flexible 25 feet hose, and never-flat tires.
The Generac SpeedWash 7122 pressure washer’s pump has a brass head, which makes it two times more durable than pumps made of other materials. The high-pressure hose is made of durable materials that make it non-marring and kink-resistant.
The Generac SpeedWash 7122 weighs 62 pounds and measures 24.2 x 18.9 x 35.5 inches. Due to its vertical design, this unit does not require large storage space. This power washer is supplied with two never-flat tires and its pump and motor are well-balanced over the axle to ensure ease of maneuverability.
The Generac SpeedWash 7122 maintenance needs are not time-consuming. The pump of this unit is pre-filled with oil by the manufacturer and sealed, requiring no regular oil change. The engine oil needs to be changed after the first 5 hours of use and then after every 20 hours or seasonally. The nozzles need to be cleaned regularly. More details on how to keep this pressure washer working in good conditions are detailed in the user manual.
The Generac SpeedWash 7122 comes with a 3-year warranty policy.
The advantages of the Generac SpeedWash 7122 gas pressure washer are as follows:
- The Generac SpeedWash 7122’s engine can be easily started using an on/off switch.
- The Generac SpeedWash 7122 has an automatic cooling system that eliminates the risk of overheating, preventing pump damage.
- The Generac SpeedWash 7122 is equipped with an onboard soap tank.
- The Generac SpeedWash 7122 comes with an ergonomic spray gun that is supplied with adjustable pressure settings.
- The Generac SpeedWash 7122 is accompanied by a wide variety of attachments that make it more versatile and reduce the need for further investment.
The disadvantages of the Generac SpeedWash 7122 gas pressure washer are as follows:
- The Generac SpeedWash 7122 is pricey for a residential pressure washer.
- The Generac SpeedWash 7122’s hose does not detach easily.
3. SIMPSON Cleaning ALH4240 4200 PSI
Simpson Cleaning is one of the world-leading companies that has specialized in the production of gas pressure washers. The high quality and ease of use of its cleaning units make it one of the top choices even among the most pretentious customers.
The Simpson Aluminum ALH4240 is a powerful gas pressure washer designed for professionals that focus on wood restoration, deck cleaning, graffiti removal, and various other professional cleaning jobs. This unit is also suited for DIY cleaning tasks and can be used for residential operations.
The Simpson Aluminum ALH4240 gas pressure washer is unique because it combines optimum performance with durability. This power washer is equipped with a HONDA GX390 engine that can deliver up to 4200 PSI and 4 GPM, totaling 16800 CU, which makes this unit suitable for heavy-duty jobs. The GX390 is a powerful model that has an oil shut-down feature that protects the engine when the oil levels are too low.
The Simpson Aluminum ALH4240 costs around $1400.
The pump of the Simpson Aluminum ALH4240 is an industrial triplex model powered by CAT that has ceramic-coated pistons. This pump has a thermal relief valve that reduces overheating. The Bypass mode allows the water to re-circulate inside the pump when the trigger is not pressed in order to keep the engine running.
The accessories of the Simpson Aluminum ALH4240 gas power washer are a spray gun, a wand, 5 nozzle tips, a 25-feet MorFlex hose, and a siphon tube accompanied by a filter.
Simpson Aluminum ALH4240’s frame is made of air-crafted aluminum. The hose included in the package is steel-braided and has a polyurethane outer jacket. The nozzle tips are made of stainless steel which protects them from corrosion. All these materials make this gas pressure washer durable and increase its reliability.
The Simpson Aluminum ALH4240 power washer measures 38 x 23.5 x 29 inches and weighs 124 pounds. This is not the smallest cleaning unit on the market, but it can be easily stored due to its compact construction.
The Simpson Aluminum ALH4240 gas pressure washer is not different from other units in terms of maintenance. The engine oil needs to be changed after the first 20 hours of use and then after every 6 months, or after every 100 hours of use. The manufacturer recommends using a Simpson Pump Guard or something similar when the pressure washer is not used for more than 30 days or when it is winterized. The pump oil will also be needing regular changes.
The warranty policy of the Simpson Aluminum ALH4240 pressure washer specifies 3 years for the engine, 2 years for the pump, and 10 years for the frame. This warranty policy covers defects in material and workmanship.
The advantages of the Simpson Aluminum ALH4240 are as follows:
- The Simpson Aluminum ALH4240’s pump has a sight glass that allows precise dosage of the lubricant and seeing when the oil levels are too low.
- The Simpson Aluminum ALH4240 is accompanied by a non-marring abrasion-resistant hose that has an increased lifespan.
- The Simpson Aluminum ALH4240 comes with a Dial-N-Wash system that allows the user to adjust the pressure according to their cleaning needs.
- The Simpson Aluminum ALH4240 offers high mobility levels even on problematic terrains because it is equipped with two 13” premium pneumatic tires.
- The Simpson Aluminum ALH4240 has M22 fittings for the gun and the hose which make it compatible with accessories from other brands.
- The Simpson Aluminum ALH4240’s frame is extremely lightweight compared to similar products.
- The Simpson Aluminum ALH4240 is equipped with a soap injection system that facilitates dilution.
The disadvantages of the Simpson Aluminum ALH4240 are as follows:
- The Simpson Aluminum ALH4240 is not shipped to California.
- The Simpson Aluminum ALH4240 is a bit expensive for residential use.
4. Generac Gas Pressure Washer Kit 3100 PSI 2.5 GPM
Generac is one of the most renowned gas pressure washer brands in the world. The company has been on the market for more than 60 years and is well known for the versatility of its cleaning units.
The Generac Gas Pressure Washer Kit 7143 is designed for residential use and comes with an electric start system. This system is an easy-to-use feature similar to what electric power washers use. The applications of this cleaning unit include cars, wood surfaces, driveways, patios, outdoor furniture, motorcycles, and more.
The Generac Gas Pressure Washer Kit 7143 stands out among similar products in this power range because it has an electric start system. This system is powered by a 12V LI-Ion battery that can last for about 18 months after charging. This battery is more durable than lead-acid batteries and is protected by a cover to avoid debris and water from damaging it. The benefit of using an electric start system is that the unit starts as soon as the button is pushed and stops when it is let go of, reducing time and eliminating frustration.
The Generac Gas Pressure Washer Kit 7143 costs around $1200.
The Generac Gas Pressure Washer Kit 7143 is powered by a powerful 173cc OHV motor manufactured by Generac that generates up to 3100 PSI at a 2.5 GPM maximum water flow rate. The pump of this power washer is a vertical axial cam model that is easy to set up due to its extended connections.
The Generac Gas Pressure Washer Kit 7143 is accompanied by a wide variety of accessories that make it versatile, such as a 12-inch power broom supplied with high-pressure nozzles, a powerful trigger gun, a soap blaster, a 30-feet high-pressure hose, and 4 regular nozzle tips.
The Generac Gas Pressure Washer Kit 7143 features a hose made of high-quality materials that make it non-marring and resistant to abrasions.
The Generac Gas Pressure Washer Kit 7143 weighs 67 pounds and is 24.4 x 18.9 x 35.5 inches in dimension. This unit’s two-wheeled cart compact design makes it really easy to store.
The maintenance of the Generac Gas Pressure Washer Kit 7143 requires regular engine oil changes, cleaning, and winterizing the unit. The pump oil change is prohibited, as the pump is pre-filled with oil and is maintenance-free.
The warranty that the Generac 7143 Gas Pressure Washer kit comes with is 2 years, and it does not cover all the cleaning unit’s components.
The advantages of Generac Gas Pressure Washer Kit 7143 3100 PSI are as follows:
- The Generac 7143 3100 PS has an auto-choke system that eliminates the need to wait for the engine to warm up.
- The Generac Gas Pressure Washer Kit 7143 features a 0.5-gallon onboard soap tank that is easy to access and eliminates the need for external detergent containers.
- The Generac Gas Pressure Washer Kit 7143 comes with an adjustable PowerDial attached to the wand that allows the user to easily change the pressure settings according to their needs.
- The Generac Gas Pressure Washer Kit 7143 electric system has a recoil backup.
- The Generac Gas Pressure Washer Kit 7143 is accompanied by a long lance that increases the range of application, allowing the user to access hard-to-reach areas.
The disadvantages of Generac Gas Pressure Washer Kit 7143 3100 PSI are as follows:
- The Generac Gas Pressure Washer Kit 7143 might be uncomfortable to move around due to the position of the hose connection.
5. The Simpson Gas Pressure Washer GX270 4000 PSI 3.5 GPM
Simpson is a world-leading company when it comes to gas power washer manufacturing. This brand has developed a variety of pressure washer series that fulfill a wide range of customers’ needs.
The Simpson PowerShot PS60869 is a reliable gas-powered cleaning unit placed third in the PowerShot series when it comes to the delivered total power. This unit is designed for medium and heavy-duty commercial and DIY cleaning jobs that include wood restoration, painting preparation, graffiti removal, driveway cleaning, and more.
The Simpson PowerShot PS60869’s core strength is its powerful and reliable engine. This unit is equipped with a 4-stroke OHV GX270 motor powered by Honda that generates 4000 PSI at 3.5 GPM, resulting in 14000 CU. The GX270 comes with low noise and vibration levels and meets EPA Phase III gas emission regulations. This engine is equipped with a maximum fuel level indicator that prevents overfilling, and a low-oil shut-down feature that increases its lifespan. This motor is accompanied by an AAA industrial triplex plunger pump improved by Simpson’s PowerBoost Technology that enhances the pressure delivered to the nozzle.
The Simpson PowerShot PS60869 costs around $950-$1000.
The Simpson PowerShot PS60869 comes with the following accessories: a QC spray lance, 5 nozzle tips with quick connections, a spray gun with M22 connections, a 50-feet high-pressure hose, and a soap siphon tube with a filter.
The Simpson PowerShot PS60869 has a strong welded steel frame that has a steel axle. The hose included in this package is protected by a polyurethane outer jacket and is steel-braided. These materials make the PS60869 reliable and increase its lifespan.
The Simpson PowerShot PS60869 weighs 132 pounds and storing it does not require a lot of space, as it measures 22.75 x 33.5 x 22 inches. The design of this unit is cubical and all the accessories can be stored onboard.
The Simpson PowerShot PS60869 requires an initial engine oil change after 20 hours of use and an air cleaner check every three months. If the pressure washer is frequently used in dusty areas, servicing should be done more often. Cleaning the nozzles, lubricating the connectors, and winterizing the pressure washer are recommended by the manufacturer in order to benefit from the warranty policy.
The Simpson PowerShot PS60869 is backed by a warranty that covers 10 years for the frame, 5 years for the pump, 3 years for the engine, and 90 days for the accessories. The damage covered by this policy refers to defects in materials and workmanship.
The advantages of the Simpson PowerShot PS60869 are as follows:
- The Simpson PowerShot PS60869’s engine is equipped with a one-way valve that ensures optimal lubrication even when it is used on inclined surfaces.
- The Simpson PowerShot PS60869’s pump is supplied with a Bypass feature that allows the water to recirculate inside it when the trigger is not pressed, eliminating the need for turning off the engine when repositioning.
- The Simpson PowerShot PS60869 has an ergonomic spray gun that reduces fatigue due to prolonged use.
- The Simpson PowerShot PS60869’s hose has non-marring properties, as it is kink and abrasion-resistant.
- The Simpson PowerShot PS60869 is equipped with two 13-inch premium pneumatic tires that are durable and increase mobility.
- The Simpson PowerShot PS60869 comes with M22 connections with M22 connections which make it compatible with a variety of accessories produced by other brands.
The disadvantages of the Simpson PowerShot PS60869 are as follows:
- The Simpson PowerShot PS60869 does not ship to California because it is not CARB-compliant.
- The Simpson PowerShot PS60869 doesn’t have an onboard soap tank, even though it comes with a detergent siphon tube that injects the cleaning chemical when the soap nozzle is connected.
6. SIMPSON Cleaning PS3228 PowerShot
SIMPSON Cleaning is a brand renowned for producing high-quality pressure washers since it was founded in 1959. The brand is now among the leaders of the gas pressure washer industry with high customer satisfaction levels.
The Simpson PowerShot PS3228 is a residential gas power washer that can be used for light to medium-duty tasks. This durable unit is suited for job site cleaning tasks, equipment, cars, fences, driveways, patios, outdoor furniture, siding, concrete pavement, mildew, graffiti removal, and more. This power washer is suited for both contractors, as well as beginner residential users.
The Simpson PowerShot PS3228’s core strength is its powerful engine. This unit is powered by a Honda GX200 motor that is a part of the OHV Commercial Series. This engine has 6 HP and has a capacity of 196cc. The maximum pressure rate that this motor generates is 3300 PSI at a water flow rate of 2.5 GPM. This results in a total power of 8250 CU.
The Simpson PowerShot PS3228 costs around $500-$600.
The Simpson PowerShot PS3228 features an AAA industrial triplex pump constructed to have a Bypass mode that allows water to recirculate inside the pump when the trigger is not engaged. This function eliminates the need for the user to stop the engine when the trigger is not pressed, protecting the pump.
The Simpson PowerShot PS3228’s accessories included in the package are an ergonomic spray gun, a lance, the 5 quick-connect nozzle tips, a 25 feet MorFlex high-pressure hose, and a siphon tube with filter included.
The Simpson PowerShot PS3228 has a welded frame made of solid steel which increases its durability. The nozzles included in the package are made of stainless steel, and the hose is made of durable materials that offer non-marring properties. These materials increase the lifespan of this pressure washer.
The Simpson PowerShot PS3228 has a cubical shape and its frame is equipped with two 10-inch premium wheels that ease transportation. The unit measures 34 x 21 x 24 inches and weighs 83.2 pounds.
The Simpson PowerShot PS3228 needs to be winterized properly and maintenance is needed for it to work at optimal parameters. The pump oil needs changing after the first 50 hours of use, and then after every 100 hours. The connections need to be cleaned and lubricated regularly. More maintenance recommendations can be found in this unit’s detailed operator manual.
The Simpson PS3228 PowerShot comes with an extended warranty policy that covers 3 years for the engine, 5 years for the pump, 10 years for the frame, and 90 days for the accessories. The warranty refers to damages due to defects in material and workmanship.
The advantages of the Simpson PowerShot PS3228 are as follows:
- The Simpson PowerShot PS3228 can work for up to 3 hours without the need of refilling the fuel tank.
- The Simpson PowerShot PS3228’s PowerBoost technology delivers a consistent water flow.
- The Simpson PowerShot PS3228’s engine features an oil alert that warns the user when the engine oil levels are too low.
- The Simpson PowerShot PS3228 has a thermal relief valve that prevents overheating by releasing the water inside the pump when it reaches high temperatures.
- The Simpson PowerShot PS3228 is quieter than many gas pressure washers in the same power range.
- The Simpson PowerShot PS3228 provides onboard storage for the hose, the nozzles, and the wand.
The disadvantages of the Simpson PowerShot PS3228 are as follows:
- The Simpson PowerShot PS3228’s cubical shape requires a relatively large storage space.
7. Simpson Gas Pressure Washer PS68043 4400 PSI 4.0 GPM
Simpson is one of the highest-rated brands in the gas pressure washer industry renowned for its reliable products. This brand specializes in the production of residential and commercial cleaning units that suit even the most pretentious customers’ needs.
The Simpson PowerShot PS60843 is a heavy-duty gas pressure washer that is reliable and long-lasting. The PowerShot series was created for contractors whose work involves wood restoration, deck cleaning, graffiti removal, wall paint preparation, and many more commercial cleaning services. This pressure washer is also suited for residential DIY cleaning tasks that include removing tough stains from driveways, patios, and more.
The Simpson PowerShot PS60843 is renowned among its competitors because it is easy to start and delivers high-performance levels.
The Simpson PowerShot PS60843 costs around $900-$1000.
The Simpson PowerShot PS60843 is powered by a powerful 420cc engine manufactured by Simpson. This motor generates up to 4400 PSI at a maximum water flow of 4 GPM. The PowerShot PS60843 has 17600 CU which is perfect for tough cleaning jobs. This pressure washer is accompanied by an AAA triplex plunger pump with oil seal technology, that provides an even and consistent water flow even for prolonged use.
The Simpson PowerShot PS60843 package includes a trigger gun, a wand, a detergent siphon tube that has a filter, a 50-feet Monster hose, 5 quick-connect nozzle tips, and a pack of engine oil.
The Simpson PowerShot PS60843’s frame has a welded steel construction and has a powder-coated finish. The hose included in this package is steel-braided and covered by a polyurethane outer jacket, which makes it abrasion and kink resistant.
The Simpson PowerShot PS60843 measures 38 x 23 x 29 inches and weighs 135 pounds. Storing this unit will require more space than for a residential unit, but less than for most commercial pressure washers. The frame of the unit is equipped with two 13-inch premium pneumatic tires that ease mobility and maneuverability even on tough terrains.
The maintenance of the Simpson PowerShot PS60843 is easy to perform. The pump of this unit is filled with lubricant by the manufacturer and comes with a sight glass that allows the user to view when the oil levels are too low. This glass also facilitates precise lubricant dosage. The oil of the pump needs to be changed after the first hours of use. After that, the procedure needs to be repeated after every 100 hours of operation. The engine lubricant also needs to be changed periodically, the connections and nozzles need to be cleaned, and the unit needs to be winterized.
The Simpson PowerShot PS60843 comes with a 3-year limited consumer warranty for the engine and a 5-year limited warranty for the pump. Simpson also offers a warranty of 10 years for the frame and 90 days for the accessories, which covers defects in workmanship and materials, but not freeze damage.
The advantages of the Simpson PowerShot PS60843 are as follows:
- The Simpson PowerShot PS60843 comes with onboard storage for all its accessories.
- The Simpson PowerShot PS60843 has a thermal relief valve that doesn’t allow the temperature of the pump to exceed certain limits in order to expand its lifespan.
- The Simpson PowerShot PS60843 comes with an ergonomic trigger gun equipped with a safety system that prevents unintentional operation.
- The Simpson PowerShot PS60843 is CETA certified.
- The Simpson PowerShot PS60843 is supplied with a low engine oil shut-down feature that protects the engine from damage.
- The Simpson PowerShot PS60843 has a highly stable construction that ensures safe operation.
- The Simpson PowerShot PS60843’s hose is double in length compared to other similar products, which ensures easy access to hard-to-reach surfaces.
The disadvantages of the Simpson PowerShot PS60843 are as follows:
- The Simpson PowerShot PS60843 doesn’t have an onboard detergent tank.
8. Simpson MS60763 Megashot
Simpson is one of the most famous pressure washer brands, with a history of over 60 years in the gas pressure unit industry.
The Simpson Megashot MS60763 is a gas pressure washer suited for a variety of DIY cleaning tasks, such as washing painted or frail surfaces, outdoor furniture, patios, decks, house siding, concrete, and other rough surfaces.
The Simpson Megashot MS60763 stands out because it offers maximal performance at low costs. This unit is equipped with a KOHLER RH265 engine that can deliver a maximum pressure rate of 3100 PSI at 2.4 GPM. This engine is designed for residential cleaning and is easy to start. The unit costs around $300-$350 and is relatively affordable for a gas pressure washer that delivers a total of 7440 CU.
The Simpson Megashot MS60763 comes with an onboard axial cam pump that uses OEM Technologies. The pump’s crankcase is made of die-cast aluminum, which prevents corrosion, and is sealed in order to avoid contamination.
The Simpson Megashot MS60763 comes with the following accessories: 5 nozzles, an ergonomic easy-to-use spray gun, a wand, a 25-feet high-pressure hose, and a siphon tube that has an included filter.
The Simpson Megashot MS60763’s components are made of high-quality materials like aluminum, solid steel, and hard plastic that expand the lifespan of the unit.
The Simpson Megashot MS60763 weighs 63 pounds, measures 34 x 20.5 x 24 inches, has a horizontal compact design, and comes with onboard storage for the accessories. These features make it really easy to store.
The maintenance of the Simpson Megashot MS60763 is relatively easy to carry out and requires regular engine oil changes. The pump is maintenance-free and has been filled with oil by the manufacturer. Winterizing this unit is essential in order to benefit from the warranty policy that doesn’t cover freeze damage.
The Simpson Megashot MS60763 comes with a limited warranty that covers a period of 5 years for the frame. The pump has a 1-year warranty, the engine comes with a 2-year limited warranty, and the accessories are covered for 90 days.
The advantages of the Simpson MS60763 gas pressure washer are as follows:
- The Simpson Megashot MS60763 comes with an automatic detergent dilution feature that eliminates the need for a DIY procedure.
- The Simpson Megashot MS60763’s pump has a thermal relief valve that prevents pump damage due to overheating.
- The Simpson Megashot MS60763 allows recirculation of the water inside the pump when the trigger is not engaged in order to eliminate the need of turning off the engine when the user is repositioning.
- The Simpson Megashot MS60763 has a non-marring, abrasion-resistant high-quality hose which reduces the need for further investment.
- The Simpson Megashot MS60763 is supplied with two 10-inch high-quality premium wheels that increase ease of maneuverability.
The disadvantages of the Simpson Megashot MS60763 gas pressure washer are as follows:
- The Simpson Megashot MS60763 doesn’t have an onboard detergent tank.
- The Simpson Megashot MS60763’s parts made of plastic are not covered by the warranty.
9. Generac 6922 with 2800 PSI
Generac is a worldwide known brand present on the market since 1959. This brand has specialized in the production of convenient and powerful gas pressure washers, providing high quality and reliability.
The Generac 6922 2800 is an ergonomically designed gas pressure washer suited for medium-duty residential use. This unit will easily clean outdoor furniture, decks, driveways, rims, tires, walls, and more.
The Generac 6922 2800 with 2800 PSI is different from its competitors due to the ergonomic features that make it one of the top easy-to-use gas pressure washers. The unit comes with a cushion grip handle that reduces hand strain and ensures comfort during cleaning. The axial cam pump comes with easy-to-access hose connections that do not require the user to kneel in order to attach the hose. The ease of access is due to the positioning of the pump which is at level with the horizontal shaft engine.
The Generac 6922 2800 costs around $820.
The Generac 6922 2800 is equipped with a 196cc OHV horizontal-shaft engine that delivers a maximum pressure rate of 2800 PSI and 2.4 GPM, resulting in 6720 CU. This power washer has an axial cam pump that works properly at a maximum water supply temperature of 100° F.
The Generac 6922 2800 comes with 4 nozzle tips: a blast nozzle, a clean nozzle, a wash nozzle, and a detergent nozzle. The package also includes a 25-feet high-pressure hose and a spray gun.
The Generac 6922 2800 has a frame construction made of steel. Some of the components of this unit are made of high-quality plastic, and the pump is protected by a sturdy casing.
The Generac 6922 2800 weighs 57 pounds and measures 24.4 x 18.8 x 35.4 inches. The frame of this unit features two 10-inch never-flat tires that ease transportation. The vertical design of this pressure washer and the fact that it comes with onboard storage for the accessories reduce the need for a large deposit space.
The Generac 6922 2800 comes with a maintenance-free pump that has been filled with oil by the manufacturer and then sealed. This is why changing the oil might be hard and is not recommended. The engine oil needs to be changed after the first 5 hours of use and, after that, every 20 hours. The manufacturers also provide a sachet of Star Bill that has to be applied every time the tank is filled in order to avoid engine corrosion. Winterizing the unit is not optional for users who want to benefit from the warranty.
The Generac 6922 2800 pressure washer comes with a 2-year limited warranty, but the warranty policy does not apply if improper or contaminated fuel and oils are used.
The advantages of the Generac 6922 2800 gas pressure washer are as follows:
- The Generac 6922 2800 has an onboard detergent tank that has a capacity of 0.5-gallons, which is enough for almost every residential cleaning task.
- The Generac 6922 2800 can be used for prolonged periods, as the gun is equipped with an easy-to-pull trigger that eliminates fatigue.
- The Generac 6922 2800 can be set up quickly without the assistance of a professional.
- The Generac 6922 2800 has a perfectly balanced design around the axle when it comes to the engine and the pump, easing maneuverability.
The disadvantages of the Generac 6922 2800 are as follows:
- The Generac 6922 2800 is not equipped with a pressure output regulator.
10. Karcher G2700
Karcher is a German company renowned for the production of reliable premium pressure washers. This brand has a history of more than 80 years in the cleaning units industry and has become popular for providing outstanding quality.
The Karcher G2700 R 11073830 gas pressure washer offers the right amount of power for general household jobs such as deck and concrete washing, house siding, vehicle and boat cleaning, and many more. The unit is compact, easy to use, and robust at the same time.
The Karcher G2700 R 11073830 stands out because it delivers relatively high performance at an affordable price. This gas power washer delivers 2700 PSI at a maximum flow rate of 2.4 GPM, totaling 6480 CU. This total cleaning power is not extremely high, but it is enough for residential cleaning tasks.
The Karcher G2700 R 11073830 costs around $250 – $300.
The Karcher G2700 R 11073830 is supplied by a powerful KPS 196cc engine manufactured by Karcher and an axial cam pump. The main advantage of this type of pump is that it can deliver a high water flow rate that is constant and reliable. The disadvantage is that it has a lower lifespan than triplex pumps.
The accessories of the Karcher G2700 R 11073830 include a spray wand, a trigger gun, a 25-feet high-pressure hose, and 4 spray nozzles. The unit’s commercial-grade trigger gun is supplied with a child safety lock feature.
The Karcher G2700 R 11073830 features a welded steel frame and a pump head made of aluminum. These sturdy materials increase the lifespan of this power washer, even though some parts are made of plastic.
The Karcher G2700 R 11073830 weighs 60 pounds without the accessories, which weigh 3 pounds, and measures 15 x 28 x 35 inches. This power washer has a compact design that makes storing easier. The frame of this unit is equipped with 2 oversize 12-inch wheels that increase mobility levels.
The Karcher G2700 R’s maintenance is not time-consuming. The pump is sealed and maintenance-free, which means that there’s no need for oil changes. The unit’s engine requires periodical oil changes and the recommended engine oil viscosity is SAE 10W-30. The manufacturer recommends winterizing the unit, as freeze damage is not covered by the warranty.
The Karcher G2700 R 11073830 is backed by a warranty policy that provides 3 years for the engine and 2 years for the pump.
The advantages of the Karcher G2700 R 11073830 are as follows:
- The Karcher G2700 R’s assembly process doesn’t require any tools and can be done in less than 10 minutes.
- The Karcher G2700 R comes with onboard storage for the accessories which facilitates use and reduces storage space.
- The Karcher G2700 R is equipped with a spray wand that features a child safety lock.
- The Karcher G2700 R starts with a single pull due to the auto choke feature of its engine.
- The Karcher G2700 R has an onboard detergent tank.
The disadvantages of the Karcher G2700 R 11073830 are as follows:
- The Karcher G2700 R doesn’t have a pressure regulator.
- The Karcher G2700 R’s plastic parts deteriorate easily, and they are not covered by the warranty.
11. Simpson Cleaning 
2400 PSI CM60912
Simpson is one of the leading companies in the gas cleaning unit industry. This brand has been well known for its reliable and high-quality products for more than 60 years.
The Simpson CM60912 is a light to medium-duty gas pressure washer that has all the features needed to perform residential cleaning tasks. This unit is suited for cleaning outdoor furniture, cars, patios, motorcycles, garage doors, and more.
The Simpson CM60912’s core strengths are its high quality and robustness. This pressure washer is equipped with an OEM Technologies pump that has an anodized die-cast aluminum crankcase which makes it long-lasting. The frame of this unit has strong steel construction and comes fully assembled. These materials make this cleaning unit reliable and durable.
The Simpson CM60912 costs around $250.
The Simpson CM60912 is powered by an OHV 149cc engine manufactured by Simpson that delivers 4800 CU and comes with a large recoil, which makes it easy to turn on. The unit’s maximum pressure rate is 2400 PSI and its maximum water flow rate is 2 GPM.
The accessories that the Simpson CM60912 comes with are a 25-feet high-pressure hose, a wand, a spray gun, and 3 quick connect nozzle tips: one for soap, a 0-degree nozzle tip, and a 25-degree nozzle tip. The kit also includes a pack of engine oil and a siphon tube with a filter.
The Simpson CM60912 weighs 39.6 pounds and measures 19.5 x 14.25 x 23.5 inches. This pressure washer has a vertical, compact design, and a foldable handle, which reduces the need for large storage space. The unit’s frame is supplied with two 6-inch never-flat wheels that facilitate mobility.
The Simpson CM60912 does not require much in terms of maintenance, as the pump is filled with oil by the manufacturer and sealed, making it maintenance-free. Regular engine oil changes and periodical nozzle and connection cleaning are needed, as well as preparing the unit for winter. This unit’s user manual has detailed instructions for every step of the process.
The Simpson CM60912 warranty policy offers 2 years for the engine, 1 year for the pump, 1 year for the frame, and 90 days for the accessories. The damage covered by the warranty includes defects in materials and workmanship.
The advantages of the Simpson CM60912 gas pressure washer are as follows:
- The Simpson CM60912 features a thermal relief valve that doesn’t allow the pump to overheat, increasing its lifespan.
- The Simpson CM60912 comes with a non-marring hose, which is abrasion-resistant, flexible, and can be stored onboard.
- The Simpson CM60912 is supplied with a 1-gallon onboard detergent tank that makes the cleaning process less messy.
- The Simpson CM60912 features an automatic soap dilution that provides a 7:1 ratio.
- The Simpson CM60912 is affordable considering all the features it provides.
- The Simpson CM60912 features a trigger lock mechanism that prevents unintentional operation.
The disadvantages of the Simpson CM60912 gas pressure washer are as follows:
- The Simpson CM60912 doesn’t include all types of nozzles.
- The vertical design of the Simpson CM60912 requires some time to learn how to balance it properly.
12. A-iPower APW2700C 7HP High Pressure Washer
A-iPower is a 30 years old American brand that is specialized in the production of pressure washers, engines, generators, and water pumps.
The A-iPower APW2700C gas pressure washer is a medium-duty unit suited for cleaning sidewalks, patios, siding, decks, driveways, vehicles, gutters, stucco, and several other surfaces around the house.
The A-iPower APW2700C stands out because of its price-quality ratio. This pressure washer costs around $300 and provides high performance even when used for prolonged periods. The 196cc Senci engine that powers this unit delivers 2700 PSI at a maximum water flow rate of 2.3 GPM, which equals a total power of 6210 CU. The motor is easy to turn on by using the pull-start mechanism.
The A-iPower APW2700C has an axial cam pump that features a Bypass Mode which allows the water to be redistributed inside the pump while the trigger is not engaged. The use of this feature is not recommended for more than 5 minutes in a row.
The A-iPower APW2700C is accessorized with a 25-feet high-pressure hose that allows the user to clean hard-to-reach spots, and 3 nozzle tips: 0-drees, 5-degrees, and a soap nozzle tip. The unit also comes with an ergonomic spray gun and a wand.
The A-iPower APW2700C is not the sturdiest unit on the market, but it is made of high-quality materials such as steel, for the frame, and aluminum, for the pump, which makes it durable and robust.
The A-iPower APW2700C weighs 62.8 pounds and measures 21 x 18 x 22 inches. This unit’s hand truck design allows it to be stored vertically, reducing the need for wide storage space. All the accessories of this power washer can be stored onboard.
The mobility of the A-iPower APW2700C is facilitated by the two 8-inch never-flat wheels that are attached to the frame. The padded handle of the frame adds comfort during transportation.
The A-iPower APW2700C needs some attention when it comes to maintenance, but not more than with any other gas pressure washer. Periodical oil changes for the engine are required after every 100 hours of use and professional check-ups are recommended after every 300 hours of operation. Pump lubricant changes are not required, as the pump of this power washer is maintenance-free.
The A-iPower APW2700C is EPA-approved and CARB-compliant and comes with a 1-year limited warranty that covers defects in workmanship and material.
The advantages of the A-iPower APW2700C gas pressure washer are as follows:
- The A-iPower APW2700C is equipped with a thermal relief valve that reduces the temperature inside the pump in order to prevent its deterioration.
- The A-iPower APW2700C features a trigger lock system that prevents unintentional operation.
- The A-iPower APW2700C’s engine is equipped with low-lubricant protection that prevents any potential damage due to low oil levels.
- The A-iPower APW2700C features a soap injection mechanism that uses a siphon tube.
- The A-iPower APW2700C is CARB-compliant in 50 states.
The disadvantages of the A-iPower APW2700C gas pressure washer are as follows:
- The A-iPower APW2700C 7HP comes with a short period of warranty and does not cover all the components.
- The A-iPower APW2700C 7HP doesn’t have an onboard detergent tank.
13. PowerBoss Gas Pressure Washer
PowerBoss is a brand that has been manufacturing industrial cleaning equipment since 1985. The brand is renowned for providing reliable and cost-effective pressure washers.
The PowerBoss 3100 gas pressure washer is a medium-duty unit that combines sturdiness with power to deliver immaculate surfaces. The applications of this unit are various, as it can tackle stubborn stains from driveways, sidewalks, patios, siding, outdoor furniture, cars, motorcycles, softwoods, and more.
The difference between the PowerBoss 3100 and its competitors is that it can clean serious stains in no time, even if it is classified as a medium-duty machine. This cleaning unit can easily remove grease stains from porous surfaces such as concrete.
The PowerBoss 3100 gas power washer costs around $500.
The PowerBoss 3100 is powered by a Honda GC190 187cc engine that can deliver up to 3100 PSI at a maximum water flow rate of 2.4 GPM, summing up 7440 CU. This motor comes with 6 HP and has a maximum speed of 3850 RPM.
The PowerBoss 3100 is accompanied by accessories such as a 25 feet long high-pressure hose and 4 quick-connect nozzle tips.
The PowerBoss 3100 has a heavy-duty frame made of sturdy metal and a wand made of steel. The hose included in the kit is provided with PVC coating. Compared to other similar products, the PowerBoss 3100 is not as robust but provides high performance.
The PowerBoss 3100 weighs 62 pounds and measures 24 x 22.5 x 20.5 inches. In terms of design, this pressure washer is cubical shaped and doesn’t require a huge storage space. The maneuverability of this unit is ensured by the two 10-inch pneumatic tires that facilitate transportation even on bumpy terrains.
The pump of the PowerBoss 3100 gas pressure washer is axial and maintenance-free, eliminating the need to change the pump oil. Maintenance should be performed as recommended in the user manual in order to benefit from the warranty policy. This procedure includes periodical engine lubricant changes with an SAE 10W-30 oil. This gas pressure washer needs to be winterized, otherwise, low temperatures will cause irreparable damage.
The PowerBoss 3100 gas pressure washer comes with a 24-months limited consumer warranty and a 90-day warranty for commercial use.
The advantages of the PowerBoss 3100 gas pressure washer are as follows:
- The PowerBoss 3100 features an automatic cool-down system that cycles water throughout the pump when water temperatures reach levels between 125°F and 155° F, preventing pump damage due to overheating.
- The PowerBoss 3100 is really easy to assemble.
- The PowerBoss 3100 comes with a 1-gallon onboard detergent tank.
- The PowerBoss 3100 is PWMA certified, which means that the pressure washer has been tested in third-party laboratories that attest to the manufacturer’s claims regarding performance.
- The PowerBoss 3100’s pump features an Easy Start system that prolongs its lifespan and reduces cleaning time.
The disadvantages of the PowerBoss 3100 gas pressure washer are as follows:
- The PowerBoss 3100 lacks a foam grip on the handle, which makes maneuverability uncomfortable after prolonged use.
14. Generac 6602 OneWash 3100 PSI
Generac is a brand that has been producing high-quality cleaning units since 1959. The company is renowned for producing powerful gas pressure washers that come at an affordable price.
The Generac OneWash 6602 is a well-engineered gas pressure washer suited for residential cleaning tasks that include washing concrete, wood, stone, metal, glass, marble, bricks, vehicles, boats, and more.
The Generac OneWash 6602 is different from its competitors because it is really easy to use even by beginners. The control panel of the unit has all the commands in one place. The spray intensity can be easily changed using the Power Dial variable pressure control feature. Using this gas pressure washer for prolonged periods is comfortable due to the cushioned handle and the inverted trigger, which is easy to pull.
The Generac OneWash 6602 costs around $650 – $700.
The Generac OneWash 6602 comes with a Generac 212cc OHV engine which is considered the most powerful in its class and can deliver up to 3100 PSI at a maximum water flow rate of 2.8 GPM. This motor provides reliable and constant pressure even with prolonged use.
The Generac OneWash 6602 features an automatic cool-down system that operates using a thermal relief valve. This valve ejects the water outside the pump when it reaches high temperatures. Overheating usually happens when the trigger is not engaged for around 3 to 5 minutes.
The accessories of the Generac OneWash 6602 include a 30-feet high-pressure hose, an ergonomic spray gun, and 3 nozzle tips – 0-degree, 45-degree, and soap.
The Generac OneWash 6602 weighs 68.5 pounds, measures 20.6 x 24 x 39.5 inches, and has a folding handle which makes it easy to store. This OneWash comes with increased mobility levels due to the two oversized 11-inch never-flat tires. The vertical design of this pressure washer enhances stability because the weight is distributed evenly.
The Generac OneWash 6602 weighs 68.5 pounds, measures 20.6 x 24 x 39.5 inches, and has a folding handle which makes it easy to store.
The maintenance needs of the Generac OneWash 6602 are listed in the user manual. Generac recommends changing the engine oil after the first 5 hours of use and after every 20 hours of use, afterward. Winterizing and cleaning the connections and the nozzles regularly are recommended in order to preserve the pressure washer working properly, but also to benefit from the warranty policy.
The warranty period of the Generac OneWash 6602 is 1 year for all the unit’s components and 2 years for the engine.
The advantages of the Generac OneWash 6602 gas pressure washer are as follows:
- The Generac OneWash 6602’s hose is longer than the ones provided by competitors and increases the application range.
- The Generac OneWash 6602 requires less storage space due to its foldable handle.
- The Generac OneWash 6602 features an axial cam pump that has pump protection and is maintenance-free.
- The Generac OneWash 6602 comes with an onboard soap tank that can hold up to 0.5 gallons of cleaning solution.
- The Generac OneWash 6602’s connections are accessible compared to similar products.
The disadvantages of the Generac OneWash 6602 gas pressure washer are as follows:
- The Generac OneWash 6602 doesn’t come with an onboard hose reel.
- The Generac OneWash 6602 lowest PSI setting is 2000, which makes the unit unsuitable for frail surfaces.
Benefits Of Gas Pressure Washers
Gas pressure washers are popular in rural areas, where there are a lot of terrains and no power source. Gas pressure washers are also used on construction sites so that construction workers don’t trip on the wires. Gas pressure washers have a larger PSI output, so they are stronger than the electric ones. Electric heavy-duty pressure washers are strong, yet use a lot of energy which is why gas pressure washers make the best alternative.
What Can You Clean With A Gas Pressure Washer?
Gas pressure washers can be used for all types of cleaning jobs – residential and commercial. When a gas pressure washer is used for commercial purposes, using a more powerful unit is advised. Surfaces that can be cleaned using a gas pressure washer are listed below.
· Driveways
A standard gas pressure washer can be used for cleaning track marks, dirt, fallen leaves, pine cones, grass leftovers after mowing, or hedge trimming. The power gas pressure washers deliver can reduce the cleaning time by up to 3 times.
· Patios
A heavy-duty gas pressure washer with a tighter nozzle can be used for removing the built-up moss on the patio. A gas pressure washer with regular PSI can be used for regular patio cleaning.
· Furniture
Gas pressure washers can be used for cleaning garden furniture – plastic, wicker, or wooden sofas and coffee tables. Do not use a gas pressure washer with a nozzle that can deliver strong pressure as it may damage the plastic.
· Siding
A gas pressure washer can be used for cleaning marks on house siding. However, using a too powerful gas pressure washer can damage or tear off the paint layers. Follow this link to read more about the best vinyl siding cleaner for pressure washers.
· Cars
A gas pressure washer can be used for cleaning car exterior and car mats.
· Windows
A standard gas pressure washer can be used for window washing and cleaning other glass surfaces.
· Decks
The dirt on decks piles up easily and creases between the boards. A gas pressure washer can get into the creases and remove dirt easily.
· Paint removal
Unlike regular residential cleaners, heavy-duty gas pressure washers can be used for removing layers of paint. The engine power, PSI output, and GPM of the gas pressure washer should be checked before using it for this purpose. Investing in one of the best pressure washer hoses would be useful for removing paint from high buildings and two-story houses.
Electric or Gas-Powered Pressure Washers?
The main difference between electric and gas-powered pressure washers lies is in the power source. Electric pressure washers save water while gas pressure washers save fuel. Electricity is a cleaner power source, but electricity-powered pressure washers are not suitable for heavier cleaning and commercial use, unlike gas pressure washers.
Gas pressure washers are easy to move around because they don’t have cords and don’t have to be connected to a power outlet. Once fueled with gasoline, a gas pressure washer can be immediately used. Gas pressure washers weigh 50 to 100 pounds but they are easy to move thanks to the never-flat tires.
Gas pressure washers are safer to use than electric units because there are no electrical cords that can come in contact with water. However, gas-powered pressure washers can generate noise and vibrate while working.
Electric pressure washers are much lighter than gas power washers, fit easily in any garage, and make a better choice for regular household cleaning chores. Compared to gas pressure washers, electric pressure washers lack the necessary power and PSI output. The cord length of electric pressure washers makes using these units less convenient because the cord can’t reach all the areas that need to be cleaned.
This electric vs gas pressure washers comparison guide provides more detailed information about the two models.
The Gas Power Washer Buying Guide
Pressure washers can have 75 times larger water pressure than the regular garden hose. Pressure Washer Lab can also claim that pressure washers save water. They use 80 percent less water for cleaning the same surface, compared to the garden hose.
When buying a gas pressure washer, factors such as fuel and water consumption, terrain, water pressure strength, motor, price, PSI and GPM output, and additional features should be considered.
1. Power Source
The most powerful electric pressure washers use a lot of electricity while gas power washers use gas and require changing and checking the oil levels and loading the fuel. Standard gas pressure washers use around 100 gallons per hour while more powerful models can use up to 3 times more.
2. Terrain
The type of terrain where a gas pressure washer will be used should be considered. Some gas powered pressure washers have a welded frame that protects the engine and the pump, which makes them suitable for uneven terrains.
Find out more about the best pressure washer pumps on our website.
3. Water pressure strength
The type of cleaning surface such as driveways, decks, siding, and patio should be considered when buying a gas powered washer and choosing its strength. More powerful gas power washers are meant for more complex cleaning tasks such as stripping the paint, cleaning heavily embedded moss, built-up muck, and mildew, otherwise, a standard 2,400 PSI model would do.
4. Price
Gas-powered pressure washers range from a couple of hundreds to thousand-dollar worth machines. A gas pressure washer with a larger pressure output and cleaning power will be priced higher than models with less cleaning power and lower pressure output.
5. The PSI And GPM Output
The PSI or pressure for a square inch is the measurement that tells how strong a gas water pressure washer is. The higher the number, the more powerful the gas water pressure. The GPM number tells how many gallons of water can flow through a gas pressure washer per minute. A gas pressure washers with high PSI with a low GPM output can deliver medium pressure. CU stands for cleaning unit and this measurement is calculated when the GMP of a gas pressure washer is multiplied by PSI. A gas pressure washer that delivers 2,400 PSI at 3.0 GPM has 7,200 CU.
6. Important Notice
Safety features such as child safety locks should be considered when buying a gas pressure washer. A powerful gas power pressure washer with high PSI output can cause injuries when directed towards a human. A gas pressure washer has to be taken with care.
7. Motor
Gas pressure washers come with built-in four-cycle or four-stroke motors that provide more reliability, produce lower emissions, last longer, and run quietly. The term 50-state refers to gas pressure washers that comply with current regulations and have low-emission engines.
How To Set Up A Gas Pressure Washer?
Setting up a gas pressure washer is simple. A gas pressure washer should be assembled according to the user manual that has been delivered with the product.
1. Check the oil
Before starting up a gas pressure washer, the water pump oil levels should be checked. The oil cap should be removed, which will make the levels of the oil easy to read. If a gas pressure washer’s tank is overfilled with oil, it will overflow, and possibly cause damage to some of the unit’s parts.
2. Fill up the gas tank
All gas pressure washers need gasoline so that they can run. The type of fuel used to fill a gas pressure washer’s tank depends on the model and it is specified in the manual. Residential gas powered washers use regular gasoline, while heavier, commercial-grade pressure washers use diesel fuel.
3. Spray gun
Depending on the gas pressure water model, some spray guns have a pressure power regulator on them that should be set before use. Nozzles and one of the top-rated pressure washer extension wands should be attached to the spray gun. Some top-rated pressure washer guns have comfortable grip handles, others have easy-to-press triggers.
4. High-Pressure Hose
A high-pressure hose brings the water pressure to the spray gun. One end of the hose should be attached to the high-pressure inlet, and the other one to the spray gun. All connections should be tightly screwed so that there is no leaking.
5. Plug into the water source
The water should be turned on to test its flow and for stale water to be removed from the hose so it is clean. The hose should be plugged into the coupler and then into the pressure washer. All the connections should be tightened to prevent leaking and the water source should be turned on.
6. Cleaners, start your engine!
The gas pressure washer should be tuned on now by priming the carburetor. The choke or a primer bulb should be used for priming the carburetor. Here is how to clean the pressure washer’s carburetor.
The start cord should be pulled until the gas pressure washer’s engine is on. Some gas pressure washers require 1 or 2 pulls, and some can’t start without 15 or 20.
7. Let the cleaning commence
The spray gun of a gas powered pressure washer should be directed towards the surface that should be cleaned and the spray guy should be pressed. Releasing the trigger makes the water stop running. Adequate nozzles and spray gun attachments should be used so the desired surface is cleaned properly.
Safety Tips For Using a Gas Pressure Washer
- A gas pressure washer shouldn’t be pointed at anyone when used.
- Gloves and eye protection should be worn when using a gas pressure washer.
- The pressure a gas pressure washer delivers should be kept under control. The pressure adjustment should be checked before every use. Accidentally spraying water under high pressure can make dirt or gravel fly around and hurt people, pets, or damage windows and cars.
- Only approved cleaning products should be used with gas pressure washers. Chemicals like bleach can cause permantent damage to the internal parts of any gas pressure washer.
- The manufacturer’s instructions on maximizing a gas pressure washer’s life should be followed and the unit should be maintained periodically.
FAQ About Gas Pressure Washers
1. How Long Can You Run a Gas Pressure Washer?
How long will a gas pressure washer run differs from one model to another. Professional gas pressure washers might last for a longer time, as these units were made using high-quality, heavy-duty parts. An average residential gas pressure washer should not be used for too long in continuity because the motor can overheat.
A gas pressure washer should be used for 3-5 minutes, then a break should be taken so the unit can cool off. A gas pressure washer shouldn’t be left in a by-pass mode but turned off completely when not in use, otherwise the pump may end up damaged.
2. Can I Start the Gas Pressure Water without Water?
A gas pressure washer can be started without water, although this is not advisable if the unit hasn’t been used for a long time. Alternatively, the belt of the gas pressure washer can be slipped off, which allows the unit to run without damaging the dry pump. This only applies to belt-drive gas pressure washers and not direct drive models.
3. In What Size Should I Get My Gas Pressure Washer?
The size of a gas pressure washer depends on the surface that needs to be washed. A small gas pressure washer with an average of 2000-2800 PSI and 2.8 GPM should be enough for regular household cleaning, including cleaning the driveway as well.
A larger 3,000-4,000 PSI gas pressure washer can be used for regular household cleaning and provide faster results, although it is less versatile than smaller models and might be too strong for other applications. The tougher the surface that needs to be cleaned, the stronger the gas pressure washer should be. This guide explains which size gas pressure washer is best for different applications.
4. What Makes Gas Pressure Washers Better than the Electric Type?
Gas pressure washers have higher pressure (PSI) and flow rate (GPM) ratings than electric pressure washers. Because of this, gas pressure washers can clean heavy-duty surfaces such as concrete faster and penetrate cracks deeper.
5. Do I Have to Empty the Fuel Tank before Putting the Gas Pressure Washer Away?
The fuel tank of a gas pressure washer should be emptied if the unit won’t be used for months. If a gas pressure washer is used once per week or several times in a month, the fuel tank won’t have to be emptied.
When temporarily putting a gas pressure washer away, the gas should be treated with a fuel preservative. Treated fuel that is more than one year old can degrade and shouldn’t be used with gas pressure washers, unlike untreated fuel.
6. How Do I Store a Gas Pressure Washer Properly?
To properly store a gas pressure washer, all gas should be drained out of the unit. Antifreeze should be run through the pump and left inside the gas pressure washer as long as it is stored. This will protect the gas pressure washer from freezing throughout the winter and protect the pump from water corrosion.
All hoses should be disconnected from the gas pressure washer and all liquids should be emptied. The gas pressure washer should be wiped with a cloth and stored in a cool and dry place. Storing a gas pressure washer in a place with high levels of humidity can make some of the unit’s parts corrode.
This guide explains in detail how to winterize a pressure washer.
7. What Should I Not Wash with My Gas Pressure Washer?
A gas pressure washer shouldn’t be used for watering plants, cleaning windows, or directed towards humans and animals, otherwise, it can cause damage or injuries. A high-power gas pressure washer of 4,000 PSI should be used for washing concrete and tough surfaces only. A gas pressure washer of this strength shouldn’t be used washing cars as it can chip the paint off, and cause damage to furniture, fences, and wood floors.
8. What Type of Gas Can I Use on My Gas Pressure Washer?
The type of gas that should be used on a gas pressure washer depends on the unit itself. Some gas pressure washers work well with standard gasoline, whereas others require using a two-cycle mix. A limited number of gas pressure washers can run on a mixture of oil and regular gasoline. The user’s manual of every gas pressure washer contains information on which type of gas should be used. Using the wrong kind of fuel can damage the gas pressure washer’s engine long-term.
Related blog: How to Winterize a Pressure Washer? & What Size Pressure Washer Do I Need?
Thank you for your comprehensive rating chart. However, I am looking at a Simpson Power Shot 4200-PSI/4 GPM washer, and am wondering if it is better suited to my needs, which includes washing asphalt floors and pathways in my goat house and yard. They get covered with muck, poop, etc., and it is tedious work to clean them. You didn’t mention anything higher in PSI than 3200, and I’m wondering if 4200PSI is too much pressure? It does cost twice as much as the smaller PSI models, but I really don’t want to spend as much time as I now take, with a light duty washer. I also can’t tell from the description (this unit is a Lowes) if it has plastic anywhere-do you have better info? The model number (at Lowes) is PS4240. The cost is $879. Thanks for your input!
Hi Camela,
We have not tested PS4240 yet, but 4200 PSI is not too much for a goat house.
In addition, Simpson MSH3125 may also handle the tasks you have mentioned. But, of course, it will take more time.
Sadly the lower PSI also uses lower water Gallons Per Minute. The 4200 uses roughly 4 gallons per minute and cleans far faster and far better. Bonus is you have an adjustable PSI knob if it’s too much you can dial it down a bit, but, the GPM is not affected which boosts cleaning time.
What do you mean by “pressure power”?
Sorry, “cleaning power”
Hi James,
Cleaning power shows the general power output of pressure washers. It is simply PSI(pounds per square inch) x GPM (gallons per minute).
I need a basic pressure washer for around the house, driveway, windows, gutters, etc. I really don’t want to mess with an electric because of the cords. But, I have limited space in my garage for storing a gas powered unit. Suggestions?
Hi,
Simpson CM60912 can work. It is relatively small among gas units.
im. wondering which model will be good to wash a fence and restain a fence. I have been looking at the Simpson cleaning MSH3125-2, will this work?
Hi,
Yes, it is a powerful and durable unit.
I’m looking for the best gas power washer to clean around my house. We have a metal shed that the dirt and mold will not just wash off. I also want to clean the outside of the house but I don’t want to take the paint off. General overall use outside. We want something that will last for years, not much maintenance, and doesn’t cost a fortune. What do you recommend?
Hi Jackie,
Simpson 3228 can last forever and do the job. Actually, all the products in our first table are reliable units.
You can choose according to the prices. You can also consider getting a surface cleaner from our related article.
you mentioned on simpson 4200 you could turn back pressure, but the gallon per min stayed at 4, do any other simpson units, say 3200 have or can I add that feature.
I bought 2 pressures washers over the past 2 weeks
The MITM pressure washer was rated 2600psi however when I attached the pressure gauge it was only producing 1800psi.
A Lifan 2800psi similarly only generated 1200psi I returned both machines.
Does any residential pressure washer with Axial Cam Pump actually produce the advertised psi?
My brothers old mitm 17 years old 2700psi generates 2600psi
Hi,
You can check Simpson MSH3125, Simpson MS60763, and Generac 7122 from the list.
Cheers