Simpson Clean Machine 2900 PSI vs Westinghouse WPX3400e

Last updated: November 2, 2026

The Westinghouse WPX3400e rates 3.4 among electric pressure washers; the Simpson Clean Machine 2900 PSI rates 3.0 among gas ones. The Simpson Clean Machine 2900 PSI costs $96.26 less ($278.74 vs $375).

Simpson Clean Machine 2900 PSI vs Westinghouse WPX3400e

Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Scores side by side

These two sit in different power source classes (electric and gas), and each is scored against the reference points for its own class, so a rating says how well each does among its own power source peers. How we rank explains each factor.

Factor weightWestinghouse WPX3400eSimpson Clean Machine 2900 PSI
Overall rating3.4/53.0/5
Value 35%27 $113.64 per 1,000 cleaning units ($375, 3,300)86 $40.05 per 1,000 cleaning units ($278.74, 6,960)
Cleaning power 30%100 3,300 cleaning units (3,000 PSI x 1.1 GPM)33 6,960 cleaning units (2,900 PSI x 2.4 GPM)
Hose 10%33 25 ft hose33 25 ft hose
Warranty 25%50 3-year warranty0 1-year warranty

Specifications

Westinghouse WPX3400eSimpson Clean Machine 2900 PSI
Cleaning
Pressure3,000 PSI2,900 PSI
Flow1.1 GPM2.4 GPM
Cleaning units3,3006,960
Nozzles included54
DetergentOnboard tankSiphon tube
Power
PowerElectricGas
Engine or motor-170 cc (Simpson CT170)
PumpAxial camAxial cam
Total stopYes-
CARB compliant-No
Build
Hose25 ft25 ft
Power cord35 ft-
Weight-50 lb
Warranty3 years1 year

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