Westinghouse WPX3400
#5 in GasFull review
A strong value for homeowners who clean driveways, siding and decks a few times a year, backed by a longer warranty than most rivals at this price.
Amazon $349$349
The Westinghouse WPX3400 and the Westinghouse WPX3600 are evenly matched, rated 3.8 and 3.8. The Westinghouse WPX3400 leads on value. The Westinghouse WPX3600 wins on hose and cleaning power. The Westinghouse WPX3400 costs $180 less ($349 vs $529).
Westinghouse WPX3600
#6 in GasFull review
For homeowners who want a longer lasting triplex pump and longer hose without paying Honda engine prices.
Amazon $529$529
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Westinghouse WPX3400 for value ($39.48 per 1,000 cleaning units ($349, 8,840) vs $54.42 per 1,000 cleaning units ($529, 9,720)).
- Choose the Westinghouse WPX3600 for hose (35 ft hose vs 25 ft hose) and cleaning power (9,720 cleaning units (3,600 PSI x 2.7 GPM) vs 8,840 cleaning units (3,400 PSI x 2.6 GPM)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every gas pressure washer; a clear win is highlighted. How we rank explains each one.
| Factor weight | Westinghouse WPX3400 | Westinghouse WPX3600 |
|---|---|---|
| Overall rating | 3.8/5 | 3.8/5 |
| Value 35% | 87 $39.48 per 1,000 cleaning units ($349, 8,840) | 53 $54.42 per 1,000 cleaning units ($529, 9,720) |
| Cleaning power 30% | 64 8,840 cleaning units (3,400 PSI x 2.6 GPM) | 79 9,720 cleaning units (3,600 PSI x 2.7 GPM) |
| Hose 10% | 33 25 ft hose | 100 35 ft hose |
| Warranty 25% | 50 3-year warranty | 50 3-year warranty |
Specifications
| Westinghouse WPX3400 | Westinghouse WPX3600 | |
|---|---|---|
| Cleaning | ||
| Pressure | 3,400 PSI | 3,600 PSI |
| Flow | 2.6 GPM | 2.7 GPM |
| Cleaning units | 8,840 | 9,720 |
| Nozzles included | 5 | 5 |
| Detergent | Onboard tank | Onboard tank |
| Power | ||
| Power | Gas | Gas |
| Engine or motor | 212 cc (Westinghouse OHV) | 212 cc (Westinghouse OHV) |
| Pump | Axial cam | Triplex plunger |
| CARB compliant | No | No |
| Build | ||
| Hose | 25 ft | 35 ft |
| Weight | 63 lb | 79 lb |
| Warranty | 3 years | 3 years |