A strong commercial power washer pairs substantial water flow with components suited to repeated, demanding cleaning, making it a fit for contractors and property owners tackling large or stubborn jobs. This lineup ranges from gas machines rated up to 4200 PSI and 4.0 GPM to quieter electric options, so the right choice depends on workload, power access and portability. For a jobsite-oriented setup, NorthStar Pressure Washer stands out with a Honda GX390 engine, CAT triplex pump and 50-foot hose.
SIMPSON ALH3228-S also brings a Honda commercial-series engine and CAT pump, while several 4200 PSI gas models offer higher listed flow without equivalent engine or pump details. Compare rated pressure and flow carefully: maximum figures are not the same across gas and electric models.
NorthStar Pressure Washer is the strongest commercial-oriented choice in this group: it combines 4200 PSI and 3.5 GPM with a Honda GX390 OHV engine, CAT 66DX triplex pump, thermal protection and a 50-foot heavy-duty hose. Its 175-pound weight makes it less convenient to move than lighter options, but its named engine and pump components suit demanding work better than models that list high pressure and flow without comparable component details.
Our Top Picks
Best OverallIts 4200 PSI, 3.5 GPM, Honda GX390 engine and CAT triplex pump suit demanding work; the included 50-foot hose adds useful reach.
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Best Contractor SetupA Honda GX200 commercial-series engine and CAT triplex pump deliver 3400 PSI at 2.5 GPM, with a stated three-year commercial engine warranty.
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Highest Listed FlowIts listed 4200 PSI and 4.0 GPM exceed the flow figures of the other gas options, fitting large driveways and heavy outdoor cleaning.
View on Amazon- High-Output Gas Steupoek 4200 Gas Washer
- Quiet Electric Tecoloy GJ01
Compare the pressure washers by power, features, and fit
| # | Product | Dimensions | Dimensions | Weight | Buy |
|---|---|---|---|---|---|
| 1 | 1. NorthStar Pressure WasherBest Overall | 23.75"L x 26"W x 40.25"H | 23.75"L x 26"W x 40.25"H | 175 lb | View on Amazon |
| 2 | 2. SIMPSON ALH3228-SBest Contractor Setup | 16"L x 5"W x 25"H | 16"L x 5"W x 25"H | 73 lb | View on Amazon |
| 3 | 3. IvyBess 4200 Gas WasherHighest Listed Flow | 23"L x 17"W x 22"H | 23"L x 17"W x 22"H | 66 lb | View on Amazon |
| 4 | 4. Steupoek 4200 Gas WasherHigh-Output Gas | 20"L x 20"W x 22"H | 20"L x 20"W x 22"H | 66 lb | View on Amazon |
| 5 | 5. IvyBess SU098High-flow nozzle versatility | 23"L x 17"W x 22"H | 23"L x 17"W x 22"H | 66 lb | View on Amazon |
| 6 | 6. Steupoek STE89High-output outdoor property washing | 23"L x 17"W x 22"H | 23"L x 17"W x 22"H | 66 lb | View on Amazon |
| 7 | 7. Westinghouse WPX3400Soap-assisted home exterior cleaning | 19"L x 18.5"W x 21.7"H | 19"L x 18.5"W x 21.7"H | 28.6 kg | View on Amazon |
| 8 | 8. Tecoloy GJ01Quiet Electric | 18.5"L x 14.5"W x 12.6"H | 18.5"L x 14.5"W x 12.6"H | 24 lb | View on Amazon |
| 9 | 9. Westinghouse WPX3000eElectric soap-tank cleaning | 22.6"L x 25.6"W x 36.6"H | 22.6"L x 25.6"W x 36.6"H | 36.8 lb | View on Amazon |
| 10 | 10. Westinghouse ePX3500Compact electric maneuvering | 13.5"L x 14"W x 16.5"H | 13.5"L x 14"W x 16.5"H | 19 lb | View on Amazon |
Detailed Reviews: Best Power Washer Commercial

#1 · Best Overall
1. NorthStar Pressure Washer
- Dimensions: 23.75"L x 26"W x 40.25"H
- Dimensions: 23.75"L x 26"W x 40.25"H
- Weight: 175 lb
Best for: Long-hose commercial coverage.
Why it ranks #1: Its 4200 PSI, 3.5 GPM, Honda GX390 engine and CAT triplex pump suit demanding work; the included 50-foot hose adds useful reach.
A 50-foot heavy-duty nonmarking hose gives the NorthStar unusual reach for a commercial-style 4200 PSI, 3.5 GPM washer. Its Honda GX390 OHV engine and CAT 66DX triplex pump pair that coverage with specified pump protections, suiting extended cleaning runs where moving the machine repeatedly would interrupt the workflow.
The direct-drive crankshaft pump has thermal protection and ceramic plungers, while oil-drain cutouts support quicker, cleaner engine and pump oil changes. Those maintenance details can simplify routine servicing, and Easy Start is specified to prevent pressure buildup for smoother recoil pulling. Adjustable pressure lets users tune PSI to a job, while the rugged steel-tube frame and 10-inch flat-free tires support portability; still, the machine weighs 175 pounds, a serious transport consideration.
- Honda GX390 OHV engine
- CAT 66DX triplex pump with thermal protection
- 50-foot heavy-duty nonmarking hose
- Oil-drain cutouts for engine and pump
- At 175 pounds, it is substantially heavier to move than the other listed washers.
Skip it if you need a 66-pound machine for frequent relocation; the Steupoek 1 lists that weight.
The NorthStar suits commercial users covering broad areas who value a 50-foot hose, adjustable pressure, and service-oriented details. Its 175-pound weight makes transport planning essential despite its flat-free tires.
Full product details
| Brand | NorthStar |
|---|---|
| Color | Black |
| Dimensions | 23.75"L x 26"W x 40.25"H |
| Item Weight | 175 pounds |
| Manufacturer | North Star Proven Performance |
| Part Number | 157127 |
| Model Number | 157127 |
Listed on Amazon as: NorthStar Pressure Washer, 4200 PSI, 3.5 GPM, Honda Engine
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#2 · Best Contractor Setup
2. SIMPSON ALH3228-S
- Dimensions: 16"L x 5"W x 25"H
- Dimensions: 16"L x 5"W x 25"H
- Weight: 73 lb
Best for: Contractor deck restoration.
Why it ranks #2: A Honda GX200 commercial-series engine and CAT triplex pump deliver 3400 PSI at 2.5 GPM, with a stated three-year commercial engine warranty.
A Honda GX200 commercial-series engine and CAT industrial triplex pump give the SIMPSON a contractor-oriented combination for deck cleaning, wood restoration, and facility upkeep. Its 3400 PSI and 2.5 GPM provide the stated working output, while the aircraft-grade aluminum frame distinguishes its construction from heavier steel-frame machines.
The Honda GX200 is described as easy to start, supporting repeated job-site use, and the CAT triplex pump adds thermal relief protection to help prevent overheating during operation. A 25-foot hose offers reach around equipment or deck sections without moving the washer for every pass. The aircraft-grade aluminum frame is specified as lightweight, though the complete unit weighs 73 pounds, so it suits users who value that frame material but still need to plan transport and handling.
- Honda GX200 commercial-series engine
- CAT industrial triplex pump
- Thermal relief protection
- Aircraft-grade aluminum frame
- The 73-pound unit still requires planning for lifting and transport.
Skip it if you need a 50-foot hose for broad work areas; the NorthStar 157127 lists that longer hose.
This SIMPSON suits contractors handling decks, wood restoration, equipment, or facility maintenance who want a Honda engine and CAT pump. Account for its 73-pound weight when moving it between jobs or storage.
Full product details
| Brand | SIMPSON |
|---|---|
| Color | Red |
| Included Components | Aluminum 3200PSI,2.8GPM,Gas GX200 |
| Dimensions | 16"L x 5"W x 25"H |
| Item Weight | 73 pounds |
| Manufacturer | SIMPSON |
| Part Number | FBA_ALH3228-S |
| Manufacturer Warranty Description | Warranty Details: Engine – 3 Year Limited Commercial Warranty | Pump – 5 Year Limited Warranty | Frame – 1 Year Limited Warranty |
| Model Number | ALH3228-S |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: Simpson Cleaning 3400 PSI Gas Pressure Washer, 2.5 GPM Power Washer for Commercial Use, Honda GX200 Engine, 25-Foot Hose, Aluminum Series, 49-State (ALH3228-S)
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#3 · Highest Listed Flow
3. IvyBess 4200 Gas Washer
- Dimensions: 23"L x 17"W x 22"H
- Dimensions: 23"L x 17"W x 22"H
- Weight: 66 lb
Best for: High-flow driveway cleanup.
Why it ranks #3: Its listed 4200 PSI and 4.0 GPM exceed the flow figures of the other gas options, fitting large driveways and heavy outdoor cleaning.
A 4.0 GPM flow rate paired with 4200 PSI gives the IvyBess substantial water delivery for stubborn outdoor grime. That combination is aimed at jobs such as driveway and fence maintenance, moss removal, and post-storm cleanup, where moving beyond light-duty washing can help cover demanding surfaces more quickly.
Its 212cc gas engine supplies the power source, while the listed 4200 PSI and 4.0 GPM describe a high-pressure, high-flow cleaning setup for driveways, decks, siding, and vehicles. The 23-by-17-by-22-inch footprint provides a concrete size reference for planning storage, and its 66-pound weight matters when moving it between work areas. The supplied description also identifies thick moss, oil stains, and peeling paint as target grime, making this a better fit for heavy exterior tasks than occasional light rinsing.
- 4200 PSI working pressure
- 4.0 GPM flow rate
- 212cc gas engine
- Targets moss, oil stains, and peeling paint
- Its 66-pound weight makes carrying it between work areas a substantial task.
Skip it if you need a listed nozzle set or hose length; the NorthStar 157127 includes a 50-foot hose.
Choose this IvyBess for substantial outdoor cleaning across driveways, decks, siding, and vehicles, especially when high flow is useful. Its 66-pound weight and 23-inch length are important considerations for transport and storage.
Full product details
| Brand | IvyBess |
|---|---|
| Color | Black |
| Dimensions | 23"L x 17"W x 22"H |
| Item Weight | 66 pounds |
| Manufacturer | IvyBess |
Listed on Amazon as: 4200 PSI 4.0 GPM Gas Pressure Washer, 212cc Heavy Duty Power Washer, Commercial Gas Powered Pressure Washer for Driveways, Cars, Decks, Patios, Siding and Outdoor Cleaning
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#4 · High-Output Gas
4. Steupoek 4200 Gas Washer
- Dimensions: 20"L x 20"W x 22"H
- Dimensions: 20"L x 20"W x 22"H
- Weight: 66 lb
Best for: Commercial-grade gas output.
Why it ranks #4: The listing pairs 4200 PSI and 4.0 GPM with a 7 HP, 212cc engine and commercial-grade pump for demanding outdoor tasks.
A 7 HP, 212cc gas engine paired with a commercial-grade pump anchors the Steupoek’s 4200 PSI and 4.0 GPM output. That combination targets demanding outdoor cleanup on driveways, decks, patios, vehicles, and other surfaces, with stated easy-start technology aimed at easing startup between cleaning sessions.
The 4200 PSI maximum pressure and 4.0 GPM maximum flow are the central working specifications, supporting the product’s stated focus on mud, grease, and grime. Its gas engine avoids defining the washer around an electric motor, while the 66-pound listed weight and 20-by-20-by-22-inch dimensions matter when choosing where to keep it and how to move it. The supplied information identifies a spray gun, wand, and five-nozzle set, adding practical spray selection for different outdoor jobs.
- 4200 PSI maximum pressure
- 4.0 GPM maximum flow
- 7 HP 212cc gas engine
- Spray gun, wand, and five-nozzle set
- The 66-pound weight is a significant handling consideration.
Skip it if you need a specified long hose for wide coverage; the NorthStar 157127 includes a 50-foot hose.
This Steupoek fits users seeking high-output gas cleaning for driveways, patios, decks, and vehicles, with a five-nozzle set for task changes. Factor its 66-pound weight into transport and storage decisions.
Full product details
| Brand | Steupoek |
|---|---|
| Color | Black |
| Dimensions | 20"L x 20"W x 22"H |
| Item Weight | 66 pounds |
| Manufacturer | Steupoek |
| Part Number | 1 |
| Model Number | 1 |
Listed on Amazon as: 4200 PSI Gas Pressure Washer, 4.0 Max GPM 212CC 7HP Commercial Gas Power Washer, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture
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#5
5. IvyBess SU098
- Dimensions: 23"L x 17"W x 22"H
- Dimensions: 23"L x 17"W x 22"H
- Weight: 66 lb
Best for: High-flow nozzle versatility.
Why it ranks #5: It offers 4200 PSI and 4.0 GPM, plus five nozzles with listed guidance for focused, general and hard-surface cleaning.
The IvyBess SU098 combines 4200 PSI with 4.0 GPM and a five-nozzle set, bringing high stated output together with spray choices for different outdoor surfaces. Its listed guidance assigns the 0° tip to hard-to-reach areas and crevices, while 15° and 25° options address hard and painted surfaces respectively.
The 212cc gas washer is specified for patios, driveways, siding, vehicles, fences, and paint preparation, so its high-pressure output can serve a range of outdoor cleaning tasks. Using the nozzle guidance, operators can select a focused jet for crevices, a 15° spray for concrete or brick, or a 25° spray for painted surfaces, wood siding, and fences. At 66 pounds and 23 by 17 by 22 inches, it requires deliberate transport and storage planning.
- 4200 PSI maximum pressure
- 4.0 GPM maximum flow
- 212cc gas engine
- Nozzle-use guidance for concrete, brick, and painted surfaces
- Its 66-pound weight can make frequent lifting and relocation difficult.
Skip it if you want a 50-foot hose included; the NorthStar 157127 lists one for broader reach.
The SU098 is a fit for outdoor users tackling varied surfaces who will make use of its high flow and nozzle choices. Its 66-pound weight and listed 25-foot hose length should suit the work area and transport plan.
Full product details
| Brand | IvyBess |
|---|---|
| Color | Black |
| Dimensions | 23"L x 17"W x 22"H |
| Item Weight | 66 pounds |
| Manufacturer | IvyBess |
| Part Number | SUP009 |
| Model Number | SU098 |
Listed on Amazon as: 4200PSI Gas Pressure Washer 4.0GPM Gas Power Washer 212CC Gas Powered Washing Machine Commercial High Pressure Washer with 25ft Hose&5 Nozzles for Patio Garden Yard Vehicle,EPA/CARB/ETL
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#6
6. Steupoek STE89
- Dimensions: 23"L x 17"W x 22"H
- Dimensions: 23"L x 17"W x 22"H
- Weight: 66 lb
Best for: High-output outdoor property washing.
Why it ranks #6: The 4200 PSI and 4.0 GPM ratings suit stubborn grime on driveways, siding and decks, though the supplied details name fewer components.
The Steupoek STE89 specifies 4200 PSI and 4.0 GPM, a high-pressure, high-flow combination aimed at stubborn outdoor dirt. Its listed applications include siding, driveways, decks, houses, cars, fences, and RVs, making it an option for buyers who need one gas washer across varied property-cleaning tasks.
The 23-by-17-by-22-inch dimensions provide a useful reference for storage, while the 66-pound weight signals that moving the washer is a physical part of the job. The product description identifies 4.0 GPM flow and high pressure as the basis for deep cleaning, with paint preparation among its stated uses. Those specifications suit demanding outdoor work, but the supplied details do not identify a nozzle set or hose length, so the listed coverage and included accessories are less fully defined here.
- 4200 PSI maximum pressure
- 4.0 GPM maximum flow
- 66-pound listed weight
- Applications include RVs, siding, and paint preparation
- The supplied details do not specify an included hose length.
Skip it if you want a listed 50-foot hose and pump maintenance features; the NorthStar 157127 specifies both.
Consider the STE89 for high-flow outdoor cleaning across homes, vehicles, driveways, and RVs, provided its size suits your storage. Buyers who require a stated hose reach should weigh that unspecified detail before selecting it.
Full product details
| Brand | Steupoek |
|---|---|
| Color | Dark Black |
| Dimensions | 23"L x 17"W x 22"H |
| Item Weight | 66 pounds |
| Manufacturer | Steupoek |
| Part Number | STE89 |
| Model Number | STE89 |
Listed on Amazon as: 4200PSI 4.0GPM Gas Pressure Washer, Heavy Duty Power Washer, Commercial Gas Powered Pressure Washer for Driveways, Cars, Decks, Patios, Siding and Outdoor Cleaning (Dark Black)
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#7
7. Westinghouse WPX3400
- Dimensions: 19"L x 18.5"W x 21.7"H
- Dimensions: 19"L x 18.5"W x 21.7"H
- Weight: 28.6 kg
Best for: Soap-assisted home exterior cleaning.
Why it ranks #7: Its gas engine delivers 3400 PSI at 2.6 GPM, and the package lists five nozzles, an onboard soap tank and a 25-foot hose.
An onboard half-gallon soap tank lets the Westinghouse WPX3400 carry detergent with its 3400 PSI, 2.6 GPM gas-washing setup. That integrated tank, combined with five quick-connect nozzles, supports switching between soap application and rinsing for tasks from cars and patio furniture to siding and garage floors.
The 25-foot abrasion-resistant Super-Flex hose provides reach across patios and driveways, while the lightweight high-pressure spray gun and wand support handling during extended passes. Its five nozzle choices include 0°, 15°, 25°, 40°, and soap, giving users several spray patterns plus detergent application. The easy-fill one-gallon gas tank and half-gallon soap tank keep the two fluids onboard; because it is gas-powered, operation must remain outdoors, never in an enclosed garage, basement, or shed.
- 3400 PSI and 2.6 GPM
- Half-gallon onboard soap tank
- 25-foot abrasion-resistant hose
- Five quick-connect nozzles
- It must not be operated indoors or in enclosed spaces.
Skip it if you need electric operation for indoor-adjacent convenience; the Westinghouse WPX3000e is electric.
The WPX3400 fits outdoor home and property cleaning where onboard soap, a 25-foot hose, and multiple spray tips support varied tasks. Its gas operation requires an open-air work location, not an enclosed garage or shed.
Full product details
| Brand | Westinghouse |
|---|---|
| Color | Blue |
| Included Components | Oil, Oil Funnel, Nozzle Tips, Hose, Pro-Style Wand |
| Dimensions | 19"L x 18.5"W x 21.7"H |
| Item Weight | 28.6 kg |
| Manufacturer | Westinghouse |
| Part Number | WPX3400 |
| Manufacturer Warranty Description | 3 Year Limited Warranty |
| Model Number | WPX3400 |
| Additional Information | Important information Safety Information Never operate the pressure washer indoors or in enclosed spaces like garages, basements, or sheds. |
Listed on Amazon as: Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI and 2.6 GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for Cars/Fences/Driveways/Homes/Patios/Furniture
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#8 · Quiet Electric
8. Tecoloy GJ01
- Dimensions: 18.5"L x 14.5"W x 12.6"H
- Dimensions: 18.5"L x 14.5"W x 12.6"H
- Weight: 24 lb
Best for: Quieter electric wash setup.
Why it ranks #8: This 2200 PSI, 3.2 GPM electric model lists a 65 dB operating level and seven nozzles, but its pressure is below the gas leaders.
A stated 65 dB operating level is the Tecoloy’s clearest differentiator, making it an electric option for buyers who want a quieter pressure-washing setup. Its 2200 PSI and 3.2 GPM maximum figures pair with a 3HP PM inverter motor and horizontal triplex pump for car and driveway cleaning.
The seven-nozzle selection covers 0°, 15°, 25°, 40°, soap, and turbo options, so users can choose among focused, broader, and detergent application approaches for different surfaces. A 24-pound listed weight and 18.5-by-14.5-by-12.6-inch dimensions give it a manageable storage footprint compared with full-size gas washers. The supplied facts do not specify a hose length or cord reach, so placement and access to the power source remain practical considerations for each cleaning area.
- 65 dB stated operating level
- 3HP PM inverter motor
- Horizontal triplex pump
- Seven listed nozzle options
- The supplied specifications do not state a hose length.
Skip it if you need gas-powered work or a stated long hose; the NorthStar 157127 includes a 50-foot hose.
Consider the Tecoloy for car and driveway cleaning where its stated 65 dB level and seven-nozzle set suit the workflow. Check that its unspecified hose reach works for your layout before choosing it.
Full product details
| Brand | Tecoloy |
|---|---|
| Color | black |
| Dimensions | 18.5"L x 14.5"W x 12.6"H |
| Item Weight | 24 pounds |
| Manufacturer | Taizhou AnGo Machinery Co., Ltd |
| Part Number | GJ01 |
| Model Number | GJ01 |

#9
9. Westinghouse WPX3000e
- Dimensions: 22.6"L x 25.6"W x 36.6"H
- Dimensions: 22.6"L x 25.6"W x 36.6"H
- Weight: 36.8 lb
Best for: Electric soap-tank cleaning.
Why it ranks #9: The electric washer provides 2600 rated PSI and 1.1 rated GPM, with an induction motor, soap tank and five-nozzle set for lighter jobs.
The Westinghouse WPX3000e combines 2600 rated PSI with an onboard 0.45-gallon soap tank, giving electric users a defined detergent option for home and vehicle cleaning. Its induction motor, 25-foot abrasion-resistant hose, and five-nozzle set add practical details for washing fences, garage floors, exterior walls, cars, and patio furniture.
The rated output is 2600 PSI and 1.1 GPM, with maximum figures of 3000 PSI and 1.76 GPM at the lowest pressure. The soap tank supports detergent application, and quick-connect tips include 0°, 15°, 25°, soap, and turbo choices for switching tasks. A 25-foot Super-Flex hose and lightweight metal spray gun and wand provide reach and handling options. The unit is compatible with accessories such as surface cleaners, extending its stated usefulness beyond the included nozzle set.
- 2600 rated PSI and 1.1 rated GPM
- 0.45-gallon onboard soap tank
- 25-foot abrasion-resistant hose
- Five quick-connect nozzle options
- Its rated flow is 1.1 GPM, limiting throughput compared with the listed gas washers.
Skip it if you need 4.0 GPM for high-volume gas cleaning; the IvyBess SU098 lists that maximum flow.
The WPX3000e suits users seeking electric operation, detergent application, and varied nozzle options for home surfaces and vehicles. Its 1.1 rated GPM is a boundary for sustained, high-volume commercial work.
Full product details
| Brand | Westinghouse |
|---|---|
| Color | Blue |
| Included Components | Tools |
| Dimensions | 22.6"L x 25.6"W x 36.6"H |
| Item Weight | 36.8 pounds |
| Manufacturer | Westinghouse Outdoor Power Equipment |
| Part Number | WPX3000e |
| Manufacturer Warranty Description | 3 Year Limited Warranty |
| Model Number | WPX3000e |
| Additional Information | Important information Safety Information Do not point the spray wand at people, pets, or yourself. The high-pressure stream can penetrate skin and cause serious injury. |

#10
10. Westinghouse ePX3500
- Dimensions: 13.5"L x 14"W x 16.5"H
- Dimensions: 13.5"L x 14"W x 16.5"H
- Weight: 19 lb
Best for: Compact electric maneuvering.
Why it ranks #10: Its 2000 rated PSI and 1.2 rated GPM, 19-pound weight and anti-tipping design better suit compact home cleaning than commercial workloads.
At 19 pounds and 16.5 inches tall, the Westinghouse ePX3500 emphasizes compact storage and easy movement rather than gas-washer output. Its anti-tipping design combines four quick-lock wheels, 360-degree steering, and a low center of gravity, helping users maneuver the unit around cars, fences, patios, and other home surfaces.
The machine provides 2000 rated PSI and 1.2 rated GPM, with maximum figures of 2500 PSI and 1.76 GPM at the lowest pressure. A 17.5-inch extendable steel wand and five quick-connect tips—including turbo and soap—give users options for changing spray tasks. The 25-foot easy-coil nylon-braided hose supports reach and tidy winding, while the 19-pound weight and compact height make storage and repositioning less demanding than a heavy gas unit.
- 19-pound listed weight
- Anti-tipping wheel design
- 25-foot easy-coil hose
- Five nozzle options including turbo and soap
- Its rated output is 2000 PSI and 1.2 GPM, below the listed gas washers.
Skip it if you need 4.0 GPM for heavy, high-flow jobs; the IvyBess SU098 lists that flow.
Choose the ePX3500 for lighter residential washing when compact storage, rolling maneuverability, and electric operation matter. Its rated 2000 PSI and 1.2 GPM are a boundary for buyers prioritizing high-volume commercial cleaning.
Full product details
| Brand | Westinghouse |
|---|---|
| Color | Black |
| Included Components | Nozzle Tips, Hose, Pro-Style Wand |
| Dimensions | 13.5"L x 14"W x 16.5"H |
| Item Weight | 19 pounds |
| Manufacturer | Westinghouse Outdoor Power Equipment |
| Part Number | ePX3500 |
| Manufacturer Warranty Description | 3 Year Limited Warranty |
| Model Number | ePX3500 |
| Additional Information | Important information Safety Information The high-pressure spray can cause serious injury or damage to surfaces, especially at close range |
Why peak PSI can mislead on commercial jobs
A high maximum PSI does not, by itself, tell you how quickly a washer can clean a large area. Flow matters too: the gas models here list 2.5 to 4.0 GPM, while the electric options list maximum flow figures up to 3.2 GPM but lower rated values where provided. Read each product’s pressure and flow figures together, and distinguish maximum from rated output.
For example, the Westinghouse WPX3000e lists 3000 max PSI but 2600 rated PSI, while the ePX3500 lists 2500 max PSI and 2000 rated PSI. Another practical trap is assuming every machine can accept the same accessory.
The WPX3400 says it is compatible with accessories such as surface cleaners, but the listing does not specify universal fittings or accessory requirements. Confirm connection compatibility before planning a workflow around an add-on.
Plan for weight, reach and safe operation
A washer’s weight and hose length can change how workable it is on a job, even when its pressure rating looks suitable. NorthStar Pressure Washer weighs 175 pounds and includes a 50-foot hose, a combination that offers listed reach but makes transport a bigger consideration. By contrast, SIMPSON ALH3228-S weighs 73 pounds and the IvyBess 4200 gas model weighs 66 pounds; the supplied data does not state hose length for those products.
Gas models also require outdoor operation: the WPX3400 safety information says never to operate it indoors or in enclosed spaces. High-pressure streams can cause injury or damage, and Westinghouse specifically warns against pointing the WPX3000e wand at people, pets or yourself.
Choose a setup that fits the work area and handling needs, and follow the product’s operating and safety instructions rather than treating a high-pressure washer like an ordinary hose.
How to Choose a Commercial Power Washer
Pressure and water flow
Look for both PSI and GPM, since pressure indicates force while flow helps describe how much water moves through a cleaning task. In this lineup, gas models range from 3400 to 4200 PSI and 2.5 to 4.0 GPM; the electric Tecoloy lists 2200 PSI and 3.2 GPM, while Westinghouse electric options list lower rated flows of 1.1 to 1.2 GPM. Compare rated figures with rated figures and maximum with maximum, not as if they were interchangeable.
For large concrete areas or heavy grime, the higher-output gas end may fit better. For lighter jobs near a power outlet, a lower-flow electric model may be more manageable.
Engine and pump details
For repeated commercial-style work, look for named engine and pump information rather than relying on a high pressure claim alone. NorthStar Pressure Washer lists a Honda GX390 OHV engine and CAT 66DX triplex pump; SIMPSON ALH3228-S names a Honda GX200 commercial-series engine and CAT industrial triplex pump. Other gas products list 212cc engines, and Steupoek 4200 Gas Washer specifies 7 HP, but supplied details do not identify comparable pump brands.
Buyers prioritizing specifically identified components may favor NorthStar or SIMPSON. Buyers choosing primarily by listed pressure and flow may consider the 4200 PSI, 4.0 GPM machines, while recognizing that the provided data gives fewer component details.
Portability and included reach
Check weight, hose length and included nozzles against the distance and surfaces you need to cover. Listed weights range from 19 pounds for Westinghouse ePX3500 to 175 pounds for NorthStar Pressure Washer; the gas machines with stated weights are 66 to 73 pounds. NorthStar includes a 50-foot hose, while SIMPSON and Westinghouse WPX3400 list 25-foot hoses.
Nozzle sets also vary: the WPX3400 has five, and Tecoloy GJ01 lists seven. A stationary or vehicle-based commercial setup may tolerate a heavier unit for greater listed hose reach.
If frequent carrying or compact storage matters more, a lighter electric unit is easier to handle, but its listed pressure and rated flow are lower.
Which commercial power washer fits your work?
For demanding, recurring work where named engine and pump components matter, choose NorthStar Pressure Washer: its Honda GX390, CAT triplex pump, 4200 PSI and 50-foot hose lead this group. If a lighter professional-style gas unit is more practical, SIMPSON ALH3228-S weighs 73 pounds and lists a Honda GX200 commercial-series engine and CAT pump. For maximum listed flow, IvyBess 4200 Gas Washer and Steupoek 4200 Gas Washer both claim 4200 PSI and 4.0 GPM; Steupoek also specifies a 7 HP engine and commercial-grade pump.
Choose Westinghouse WPX3400 for a 3400 PSI gas option with soap tank and five nozzles. For quieter electric use, Tecoloy GJ01 lists 65 dB, while Westinghouse ePX3500 suits compact, lighter-duty cleaning.
Related Buying Guides
Frequently Asked Questions
Can a commercial pressure washer run continuously all day?
Not necessarily; continuous all-day operation depends on the specific machine and its operating instructions. Check the manual for duty-cycle guidance, maintenance requirements, and recommended breaks. NorthStar lists thermal protection, but that feature alone does not establish that it can run nonstop.
Plan work around the manufacturer’s limits rather than assuming uninterrupted operation.
What power supply and water source does a commercial pressure washer need?
Match the supply to the machine: the products here include both gas-powered and electric models, and their titles do not specify exact electrical requirements or water-source limits. Check the manual for those details before setup. Use a suitable water supply and confirm its connection and flow requirements with the manufacturer.
Which nozzle or surface-cleaner accessories should I use for different cleaning jobs?
Choose an included nozzle appropriate to the surface and follow the washer’s instructions; start cautiously on a small, inconspicuous area. Several listed models include five-nozzle sets, while the Tecoloy title lists seven, including soap and turbo options. The supplied product details do not identify surface-cleaner accessories, so verify compatibility before adding one.
When should I prioritize named engine and pump components?
Prioritize component details when the washer will handle demanding, recurring work and serviceability matters. NorthStar lists a Honda GX390 engine and CAT 66DX triplex pump, while the SIMPSON listing and verdict identify a Honda GX200 and CAT pump. Other products may state pressure and flow without comparable component detail.
How should I balance portability against work capacity?
Consider how often you must move the washer alongside its pressure and flow figures. NorthStar lists 4200 PSI and 3.5 GPM but weighs 175 pounds; SIMPSON ALH3228-S is a lighter 73-pound option with a Honda GX200 commercial-series engine and CAT pump. For compact, lighter-duty electric cleaning, the verdict points to Westinghouse ePX3500.
Final Words
For demanding recurring jobs where named engine and pump components matter, NorthStar is the strongest fit, provided its 175-pound weight suits your setup. If moving the unit matters more, consider the 73-pound SIMPSON. IvyBess and Steupoek list the group’s maximum flow, while Westinghouse WPX3400 offers a gas option with a soap tank and five nozzles.
For quieter electric work, consider Tecoloy; for compact, lighter-duty cleaning, choose Westinghouse ePX3500.


