The catch
Westinghouse WPX3400 Gas Pressure Washer
Axial-cam pump.
Side by side
WPX3400 has slightly higher rated output and a lighter frame. PS3228 leans on its Honda engine, AAA triplex pump and commercial warranties that are specific to each component.
Before you buy
WPX3400 has about 3 percent more pressure and 4 percent more flow.
Where this comes from
These figures do not establish a measurable completion-time difference: 100 divided by 3300 is 3.0 percent, and 0.1 divided by 2.5 is 4 percent.
The catch
Axial-cam pump.
The catch
Before fuel and accessories, it is 14 lb heavier.


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For frequent cleaning, see how WPX3400 and PS3228 differ in working output, axial versus triplex pumps, engine, weight to transport and warranty coverage.
WPX3400 has slightly higher rated output and a lighter frame. PS3228 leans on its Honda engine, AAA triplex pump and commercial warranties that are specific to each component.
Which one fits
PS3228 uses AAA triplex, while WPX3400 uses an axial-cam pump.
Pneumatic tires are on the named Simpson.
The published weights come to 63 and 77 lb.
Neither manufacturer makes the named configurations eligible in California.
In practice
WPX3400 has about 3 percent more pressure and 4 percent more flow.
These figures do not establish a measurable completion-time difference: 100 divided by 3300 is 3.0 percent, and 0.1 divided by 2.5 is 4 percent.
Compared with PS3228, WPX3400 is about 18 percent lighter.
Fuel, accessories and water add to the transport load. 77 - 63 = 14 lb, and 14 divided by 77 is 18.2 percent.
A single headline warranty length means less than Simpson's component-specific commercial cover.
Westinghouse lists one-year limited commercial coverage, while Simpson lists different engine, pump and frame terms. Exclusions and proof-of-maintenance conditions still apply.

Westinghouse, WPX3400
For larger outdoor jobs, this 212cc gas washer delivers a rated 3400 PSI with 2.6 GPM of flow. It rides on a wheeled frame and has an axial-cam pump.

Simpson, PS3228-S / PS3228
This is a serious residential gas washer, built on a Honda GX200 engine and a serviceable AAA triplex pump for large areas that get cleaned again and again.
Spec by spec
| Spec | Westinghouse WPX3400 Gas Pressure Washer | Simpson PowerShot 3300 PSI Gas Pressure Washer | In practice |
|---|---|---|---|
| Rated output | 3400 PSI at 2.6 GPM | 3300 PSI at 2.5 GPM | Next to the pump and warranty differences, the specification gap is small. |
| Pump | Axial cam | AAA triplex | For frequent work, the more consequential ownership distinction is Simpson's pump architecture. |
| Engine | Westinghouse 212cc OHV | Honda GX200 | Look at local servicing and exact maintenance needs, and not displacement alone. |
| Dry unit weight | 63 lb | 77 lb | Each lift is 14 lb lighter with Westinghouse. |
| Wheels | 12-inch never-flat | 10-inch pneumatic | Pneumatic tires need pressure checks, and never-flat tires never need inflating. |
| Commercial limited warranty | One-year listing | Three-year engine, five-year pump and ten-year frame | Components and exclusions make the coverage differ. |
Trade-offs
Change of plan
Go with Simpson PowerShot 3300 PSI Gas Pressure Washer. PS3228 has both documented.
Go with Westinghouse WPX3400 Gas Pressure Washer. WPX3400 weighs 63 lb.
Neither model fits. Look for a model and suffix that are explicitly eligible.
Decision guide
Pick WPX3400 for slightly higher rated output in a lighter frame. Pick PS3228 if you value its Honda engine, AAA triplex pump and component-specific commercial warranties more.
Each delivers gas-level flow and pressure for outdoor surfaces. If the washer rides in a car or has to cross steps between jobs, WPX3400's lighter load to carry can count.
With PS3228 you get a triplex pump, a Honda engine and specified commercial component terms, which are concrete items to compare with a service provider. That is stronger evidence than a vague claim that one machine will last longer.
Pick tires to suit the route to the work area. Check state eligibility too, because the named versions are not options for a purchase in California. A similar model with a different suffix may have a different approval.
By the numbers
What we found across the pressure washers we compare, plus the checked facts behind each finding.
Only 1 of the 28 models checked meet every need here: “I have long, heavy-duty cleaning to do”, “A serviceable pump matters”, “Driveways and concrete are what I clean”, and “Quick rinsing is my priority”.
1 model fits, out of 28 checkedHow we countedThe count uses each product's current fit ratings for “I have long, heavy-duty cleaning to do”, “A serviceable pump matters”, “Driveways and concrete are what I clean”, and “Quick rinsing is my priority”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Westinghouse WPX3400 Gas Pressure Washer |
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| Simpson PowerShot 3300 PSI Gas Pressure Washer |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

The lighter 63 lb body and never-flat wheels are what you prefer.
See price & reviews on Amazon
The documented pairing of a Honda GX200 and an AAA triplex pump appeals to you.
See price & reviews on AmazonEach link opens in a new tab.
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