What the maker puts in writing
- “3000 PSI and 2.3 GPM of powerful, deep-cleaning water pressure… easy to fill 0.95 gallon gas tank”
- “Heavy duty gas powered 212cc 4-stroke Westinghouse OHV horizontal shaft engine with recoil start - long lasting, maintenance-free axial cam pump provides a max 2.3 gallons of water a minute”
- “25 foot abrasion resistant super-flex hose with lightweight spray gun and 4 quick connect nozzles (0 degree, 25 degree, 40 degree & soap). Includes simple and easy detergent siphon hose for extra cleaning power”
- “Tough steel frame construction with 12 inch high profile. Never-flat wheels provide easy transportation and maneuverability”
- “functionally tested in the factory and may have small residual oil and/or fuel odor; EPA compliant; backed by 3-Year limited service, labor and parts coverage with our nationwide Westinghouse Customer Service and Support Network”
- Description: “Interior Hose Diameter - 0.25 inches”
- Catalog: 22,997 g (811.2 oz) · 599 × 490 × 996 mm (23.6 × 19.3 × 39.2 in)
Three years, which is the only warranty on this shelf
All three Westinghouse listings publish “3-Year limited service, labor and parts coverage with our nationwide Westinghouse Customer Service and Support Network”.
The other eight listings here — five Simpsons, the DeWalt, the PowerSmart — publish nothing at all.
That is the strongest single argument for this machine, and there is an irony in it: the three machines with the weakest pump carry the only cover.
What a warranty is worth on a petrol pressure washer comes down to the pump, since that is what fails. An axial cam pump is sealed, unserviceable and rated in the low hundreds of hours. Three years of parts and labor on the component you cannot repair is exactly the right place to have cover.
And “nationwide service network” matters more than the term. A three-year warranty you cannot claim is a sentence; a dealer within driving distance is a repair.
Four nozzles and a siphon hose, which is where the price comes from
This is the stripped version of the WPX3200 at $329, and the two differences are both visible.
Nozzles: four, not five. This gives “0 degree, 25 degree, 40 degree & soap”. The WPX3200 adds the 15 degree.
Fifteen degrees is the aggressive-but-usable tip. Zero degrees is a pencil jet that carves grooves in decking; twenty-five is the general-purpose setting; fifteen sits between them for set-in stains on concrete and for paint preparation. At least nine of the sixteen listings here supply five tips, and this is the only one with four.
Detergent: a siphon hose, not a tank. The WPX3200 and WPX3400 both publish a “Half Gallon Onboard Soap Tank”; the PowerSmart publishes an “onboard soap tank”; this publishes a “simple and easy detergent siphon hose”.
A siphon hose is a tube you drop into a bottle on the ground. It works. It also falls over, has to be rinsed through after use or the detergent dries in the line, and means carrying an open bottle of chemical around a wet driveway.
Output drops too: 3000 PSI / 2.3 GPM against the WPX3200’s 3200 / 2.5. In cleaning units — PSI × GPM, the measure nobody here publishes — that is 6900 against 8000, a sixteen per cent difference.
Thirty dollars for a soap tank, a nozzle and sixteen per cent more work per minute. The WPX3200 is the better purchase.
3000 × 2.3 = 6900.
The full shelf, since no listing publishes the product:
Simpson CRX 4400 — 17,600 · Simpson ALH4240 — 16,800 · Simpson PS60869 — 14,000 · PowerSmart — 9500 · Simpson Aluminum 3600 — 9000 · Westinghouse WPX3400 — 8840 · Simpson PS3228 and PS61002 — 8250 · Westinghouse WPX3200 — 8000 · DeWalt DXPW3300 — 7920 · this — 6900
Why the product rather than either number: pressure cuts, flow rinses. A machine that strips a spot clean but moves water slowly leaves you pushing dirt down a driveway all afternoon.
At 2.3 GPM this has the lowest flow here, and the PowerSmart at $259.99 — sixty dollars less — delivers 9500 units with PWMA-certified figures.
For what this is: a small patio, a car, a fence, a set of garden furniture. Three thousand PSI is plenty of pressure for all of it; what you feel at 2.3 GPM is the time it takes.
A quarter-inch hose, which is the narrowest here
The description publishes “Interior Hose Diameter - 0.25 inches”, and it is the only Westinghouse listing to state it.
Bore matters because a hose loses pressure to friction along its length, and a narrower bore loses more. Three Simpson listings make the relationship explicit by publishing both figures together: the 25 and 35 foot Morflex hoses are 5/16 inch, and the 50 foot Monster hoses are 3/8 inch — because fifty feet of 5/16 would drop too much pressure at 4 GPM.
At 25 feet and 2.3 GPM, a quarter-inch bore is acceptable. It is also the cheapest hose specification on the shelf, and it is one of the reasons this machine costs what it does.
Twenty-five feet is the short end: the PowerSmart and Simpson Aluminum 3600 give 35 feet, the three big Simpsons 50.
Twenty-three kilograms, the lightest machine here
22,997 g, and the shelf runs to 61,235 g:
this 22,997 g · PowerSmart 27,669 g · WPX3200 28,576 g · WPX3400 28,600 g · DeWalt 29,030 g · Simpson PS61002 33,021 g · PS3228 33,929 g · Aluminum 3600 35,834 g · PS60869 54,431 g · ALH4240 56,245 g · CRX 4400 61,235 g
Four kilos lighter than the next machine, which on something you drag out of a garage and across a lawn is not nothing.
The never-flat wheels are the matching decision. Solid wheels cannot puncture and never need air, so a machine left all winter rolls in spring — where a pneumatic tire will have gone soft.
Every Simpson listing argues the other way, in the same words: “10” premium pneumatic tires roll smoothly over gravel, grass, and curbs.” That is true — an air tire deforms and climbs where a solid one skids and bumps. At 23 kg (50.7 lb) rather than 60, the argument carries less weight here.
What is not published
No thermal relief valve, and on a sealed pump that is the gap that matters. Release the trigger and water recirculates inside the pump, heating until a seal goes. The DeWalt, which also uses an axial cam pump, publishes a “thermal relief valve prevents overheating”. All five Simpsons publish one. The three Westinghouse listings and the PowerSmart do not.
No low-oil shutdown, which cuts the engine before it seizes. Published on the DeWalt at $429 and on the four Honda-engined Simpsons — and not on this, its two siblings, the PowerSmart, or the $899.99 Simpson CRX.
No unloader. The Simpson triplex pumps publish an “integrated unloader”, which is the valve that diverts flow when the trigger is released rather than letting pressure build.
No pump hours or service interval, which no listing on this shelf gives.
And one piece of honesty worth noting, shared with the DeWalt and the Simpson CRX: “functionally tested in the factory and may have small residual oil and/or fuel odor”. A new machine that smells of petrol has been run, which is better than one that has not.
Availability
Read on the day this page was built: $300 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-04. The live price is at the top of the page.