Westinghouse WPX3400 Gas Pressure Washer, 3400 PSI and 2.6 GPM, Onboard Soap Tank, Spray Gun and Wand, 5 Nozzle Set, for…
Best for
Best overall
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Updated May 16, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the Westinghouse WPX3400 is the most broadly endorsed gas unit in this pool. Home Depot verified-purchase reviewers consistently call out easy assembly and reliable first- or second-pull starts, and an r/gaspressurewasher101 long-form review highlights its 5-nozzle set, onboard soap tank, and ability to run a 15-inch surface cleaner comfortably on its 2.6 GPM flow. A high-trust r/Tools commenter reports two years of homeowner use with no hiccups, cleaning driveways and 'everything else.' The disagreement is mostly about ceiling, not floor.
What reviewers liked
- 4.6/5 across nearly 6,000 Amazon ratings, with home-improvement-subreddit endorsements echoing the rating
- Home Depot verified-purchase reviewers report reliable first- or second-pull starts
- Onboard soap tank and 5-nozzle set cover most residential cleaning tasks per r/gaspressurewasher101
- 2.6 GPM is enough to run a 15-inch surface cleaner per r/pressurewashing users
Where it falls short
- r/pressurewashing pros consider 2.6 GPM marginal for serious commercial surface-cleaner work
- Verified buyers describe the stock hose as stiff and prone to kinks
- Uses an axial cam pump rather than a rebuildable triplex, which specialist communities flag as a long-term durability concern
- No independent lab measurements in the signals to verify PSI/GPM claims
Across the reviewers we read, the Westinghouse WPX3400 is the most broadly endorsed gas unit in this pool. Home Depot verified-purchase reviewers consistently call out easy assembly and reliable first- or second-pull starts, and an r/gaspressurewasher101 long-form review highlights its 5-nozzle set, onboard soap tank, and ability to run a 15-inch surface cleaner comfortably on its 2.6 GPM flow. A high-trust r/Tools commenter reports two years of homeowner use with no hiccups, cleaning driveways and 'everything else.'
The disagreement is mostly about ceiling, not floor. r/pressurewashing pros note that 2.6 GPM is on the lighter side for commercial surface-cleaner work, and a few verified buyers flag the included hose as stiff. There's no high-trust expert lab measurement in the signals to confirm Westinghouse's PSI claims, so the score leans on retailer-rating volume and specialist-community sentiment rather than independent testing. For homeowners cleaning cars, fences, siding, and modest concrete, the consensus is that it punches well above its price.
- Highlight 1
- 3400 PSI and 2.6 GPM of Powerful, Deep-Cleaning Water Pressure Perfect for Decks, Sidewalks, Siding, Fences, Railings, Garage Floors, Exterior Walls, Cars and Patio Furniture – Easy to Fill 1 Gallon Gas Tank and Half Gallon Onboard Soap Tank
- Highlight 2
- 25′ Foot Abrasion Resistant Super-Flex Hose With Lightweight High Pressure Spray Gun and 5 Quick Connect Nozzles (0°, 15°, 25°, 40° & Soap) - Compatible with Pressure Washer Accessories such as Surface Cleaners, Undercarriage Cleaners, and Foam Cannons with M22 fittings
- Highlight 3
- Heavy Duty Gas Powered 212cc 4-Stroke Westinghouse OHV Horizontal Shaft Engine with Recoil Start - Long Lasting, Maintenance-Free Axial Cam Pump Provides 2.6 Gallons of Water (and Soap) a Minute
- Highlight 4
- Tough Steel Frame Construction With 12″ High Profile, Never-Flat Wheels Provide Easy Transportation and Maneuverability – Includes Engine Oil, Tools, and Quick Start Guide to Get Started in Minutes
- Highlight 5
- All Westinghouse Pressure Washers are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; Backed by 3-Year Limited Manufacturer Service, Labor, and Parts Coverage
Impressive cleaning power · Versatile nozzle options · Onboard soap tank · Easy to start: The recoil system starts the engine reliably on the first ...
I have this model and it performs well. Easier to maneuver than the commercial models but plenty of power. The 2.6 gpm would be a concern if you ...
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“Review-Does It Work? Westinghouse WPX 3400 PSI 2.6 GPM Cold ...” · YouTube
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