Simpson Clean Machine 3400 PSI
#11 in GasFull review
A compact, ready to run washer for homeowners who want 3400 PSI without a pro price. The short pump warranty is the trade off.
Amazon $359$359
3.2/5
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.
- 3,200 PSIPressure
- 2.5 GPMFlow
- 25 ftHose
- 1 yearWarranty
Check price at Amazon$329
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Turbo nozzle included, which cuts through driveway grime faster than the plain 0 degree tip
- On-board soap tank, so no bucket or siphon hose to manage
- Light 50 lb frame on never flat wheels is easy to move and store
Cons
- The pump is covered for only 1 year
- No 25 degree tip included
- Owners report the carburetor has no choke or throttle lever, which can make starting fussy
The Simpson Clean Machine family
Every Simpson Clean Machine model we rank, smallest first. Ratings compare each against its own power source.
| Model | Pressure | Rating | Price |
|---|---|---|---|
| Simpson Clean Machine 2900 PSI | 2,900 PSI | 3.0/5 | $278.74 |
| Simpson Clean Machine 3200 PSI (this one) | 3,200 PSI | 3.2/5 | $329 |
| Simpson Clean Machine 3400 PSI | 3,400 PSI | 3.2/5 | $359 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its power source. How we rank explains each one.
Specifications
| Model number | CM61456-S |
|---|---|
| Cleaning | |
| Pressure | 3,200 PSI |
| Flow | 2.5 GPM |
| Cleaning units | 8,000 |
| Nozzles included | 5 |
| Detergent | Onboard tank |
| Power | |
| Power | Gas |
| Engine or motor | 174 cc (Simpson CT170Z) |
| Pump | Axial cam |
| CARB compliant | No |
| Build | |
| Hose | 25 ft |
| Weight | 50 lb |
| Warranty | 1 year |
Alternatives in this power source
Simpson Aluminum 3600 PSI
#12 in GasFull review
A light, corrosion resistant Honda and triplex washer for small contractors and serious homeowners. It costs less than the CAT pump ALH3228 with more pressure and a longer hose.
Amazon $701.99$701.99
Westinghouse WPX2700
#14 in GasFull review
A simple, well warrantied washer for cars, patios and decks. The WPX3400 usually costs little more and cleans noticeably faster.
Amazon $293.02$293.02
Compare
Compare the Simpson Clean Machine 3200 PSI with any other pressure washer →
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