Main trade-off
Westinghouse WPX3400 Gas Pressure Washer
Axial-cam pump.
Head-to-head
WPX3400 offers slightly higher rated output in a lighter frame. PS3228 puts more emphasis on its Honda engine, AAA triplex pump and component-specific commercial warranties.
Before you choose
WPX3400 adds about 3 percent pressure and 4 percent flow.
What this is based on
100 divided by 3300 is 3.0 percent. 0.1 divided by 2.5 is 4 percent. These figures do not establish a measurable completion-time difference.
Main trade-off
Axial-cam pump.
Main trade-off
14 lb heavier before fuel and accessories.


Compare WPX3400 and PS3228 for working output, axial versus triplex pumps, engine, transport weight and warranty coverage for frequent cleaning.
WPX3400 offers slightly higher rated output in a lighter frame. PS3228 puts more emphasis on its Honda engine, AAA triplex pump and component-specific commercial warranties.
Winner by situation
WPX3400 uses an axial-cam pump. PS3228 uses AAA triplex.
The named Simpson has pneumatic tires.
Published weights are 63 and 77 lb.
Both manufacturers exclude the named configurations from California eligibility.
What matters in practice
WPX3400 adds about 3 percent pressure and 4 percent flow.
100 divided by 3300 is 3.0 percent. 0.1 divided by 2.5 is 4 percent. These figures do not establish a measurable completion-time difference.
WPX3400 is about 18 percent lighter than PS3228.
77 - 63 = 14 lb, and 14 divided by 77 is 18.2 percent. Fuel, accessories and water add to transport load.
Simpson's component-specific commercial cover is more meaningful than a single headline warranty length.
Simpson lists different engine, pump and frame terms. Westinghouse lists one-year limited commercial coverage. Exclusions and proof-of-maintenance conditions still apply.

Westinghouse, WPX3400
A 212cc gas washer with 3400 PSI rated output and 2.6 GPM flow for larger outdoor jobs, using a wheeled frame and an axial-cam pump.

Simpson, PS3228-S / PS3228
A serious residential gas washer built around a Honda GX200 engine and serviceable AAA triplex pump for repeated large-area work.
Meaningful differences
| What changes | Westinghouse WPX3400 Gas Pressure Washer | Simpson PowerShot 3300 PSI Gas Pressure Washer | Why it matters |
|---|---|---|---|
| Rated output | 3400 PSI at 2.6 GPM | 3300 PSI at 2.5 GPM | The specification gap is small compared with the pump and warranty differences. |
| Pump | Axial cam | AAA triplex | Simpson's pump architecture is the more consequential ownership distinction for frequent work. |
| Engine | Westinghouse 212cc OHV | Honda GX200 | Compare local servicing and exact maintenance needs, not displacement alone. |
| Dry unit weight | 63 lb | 77 lb | Westinghouse removes 14 lb from each lift. |
| Wheels | 12-inch never-flat | 10-inch pneumatic | Never-flat tires avoid inflation. Pneumatic tires require pressure checks. |
| Commercial limited warranty | One-year listing | Three-year engine, five-year pump and ten-year frame | Coverage differs by component and exclusions. |
What you give up
Recommendation switch
Choose Simpson PowerShot 3300 PSI Gas Pressure Washer. PS3228 documents both.
Choose Westinghouse WPX3400 Gas Pressure Washer. WPX3400 is 63 lb.
Choose neither. Find an explicitly eligible model and suffix.
What matters in practice
Both provide gas-level flow and pressure for outdoor surfaces. WPX3400's smaller carrying burden can matter if the washer travels in a car or crosses steps between jobs.
PS3228's triplex pump, Honda engine and specified commercial component terms give you concrete items to compare with a service provider. They are stronger evidence than a generic claim that one machine will last longer.
Choose tires around the route to the work area. Also check state eligibility: the named versions are not the choices for a California purchase. A similar model with a different suffix may have different approval.
What the facts say
Useful conclusions from the current pressure washers comparison, followed by the checked facts used to reach them.
Only 1 of 28 models checked match every need here: “I need sustained heavy-duty cleaning”, “Pump serviceability matters”, “I clean driveways and concrete”, and “Fast rinsing matters most”.
1 matching model from 28 checkedMatch countThe count uses the current product-to-need assignments for “I need sustained heavy-duty cleaning”, “Pump serviceability matters”, “I clean driveways and concrete”, and “Fast rinsing matters most”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Westinghouse WPX3400 Gas Pressure Washer |
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| Simpson PowerShot 3300 PSI Gas Pressure Washer |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

You prefer the lighter 63 lb body and never-flat wheels.
See price & reviews on Amazon
You want the documented Honda GX200 and AAA triplex pump combination.
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