Simpson Clean Machine 3200 PSI
#13 in GasFull review
A light, well equipped homeowner washer for decks, siding and cars. The soap tank and turbo nozzle make it the better buy than the 2900 PSI Clean Machine.
Amazon $329$329
The Simpson Clean Machine 3200 PSI is the better pressure washer overall, rated 3.2 to 3.0. The Simpson Clean Machine 3200 PSI leads on cleaning power. The Simpson Clean Machine 2900 PSI costs $50.26 less ($278.74 vs $329).
Simpson Clean Machine 2900 PSI
#15 in GasFull review
A cheap, light gas washer for occasional deck and patio cleaning. Buyers who wash a lot of concrete will want more flow and a longer warranty.
Amazon $278.74$278.74
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 Simpson Clean Machine 3200 PSI for cleaning power (8,000 cleaning units (3,200 PSI x 2.5 GPM) vs 6,960 cleaning units (2,900 PSI x 2.4 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 | Simpson Clean Machine 3200 PSI | Simpson Clean Machine 2900 PSI |
|---|---|---|
| Overall rating | 3.2/5 | 3.0/5 |
| Value 35% | 83 $41.12 per 1,000 cleaning units ($329, 8,000) | 86 $40.05 per 1,000 cleaning units ($278.74, 6,960) |
| Cleaning power 30% | 50 8,000 cleaning units (3,200 PSI x 2.5 GPM) | 33 6,960 cleaning units (2,900 PSI x 2.4 GPM) |
| Hose 10% | 33 25 ft hose | 33 25 ft hose |
| Warranty 25% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Simpson Clean Machine 3200 PSI | Simpson Clean Machine 2900 PSI | |
|---|---|---|
| Cleaning | ||
| Pressure | 3,200 PSI | 2,900 PSI |
| Flow | 2.5 GPM | 2.4 GPM |
| Cleaning units | 8,000 | 6,960 |
| Nozzles included | 5 | 4 |
| Detergent | Onboard tank | Siphon tube |
| Power | ||
| Power | Gas | Gas |
| Engine or motor | 174 cc (Simpson CT170Z) | 170 cc (Simpson CT170) |
| Pump | Axial cam | Axial cam |
| CARB compliant | No | No |
| Build | ||
| Hose | 25 ft | 25 ft |
| Weight | 50 lb | 50 lb |
| Warranty | 1 year | 1 year |