Main trade-off
Simpson PowerShot 3300 PSI Gas Pressure Washer
At roughly 77 pounds with a gas engine, it is louder, heavier and more maintenance-intensive than any corded electric here.
Head-to-head
Simpson PowerShot PS3228 vs Clean Machine CM61118: PowerShot favors serviceability, both rate at 2.5 GPM
The short answer
Choose PowerShot PS3228 when a triplex pump and frequent serviceable use are the priorities. Choose Clean Machine CM61118 for residential concrete cleaning with its listed surface scrubber bundle. Both are rated at 2.5 GPM, so the 3500 PSI label does not buy more listed water flow.
Before you choose
The reasoning and the trade-offs
Both list the same rinse volume
Ten minutes at 2.5 GPM corresponds to 25 gallons for either machine.
What this is based on
2.5 × 10 = 25 gallons. This is trigger-time arithmetic at the listed flow, not equal cleaning coverage.
Main trade-off
Simpson Clean Machine 3500 PSI Gas Pressure Washer
The AAA AX300 Pro is an enhanced axial-cam pump, not the serviceable triplex design used by the PS3228.
Simpson PowerShot 3300 PSI Gas Pressure Washer
- Choose it for
- You want the AAA triplex pump platform
- You plan frequent exterior-cleaning work and ongoing maintenance
- Main trade-off
- At roughly 77 pounds with a gas engine, it is louder, heavier and more maintenance-intensive than any corded electric here.
Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Choose it for
- You want a residential surface-cleaner bundle
- The 50-state CM61118 configuration fits your purchase location
- Main trade-off
- The AAA AX300 Pro is an enhanced axial-cam pump, not the serviceable triplex design used by the PS3228.
About this comparison
Compare Simpson's PS3228 and CM61118 for pump design, included surface-cleaning hardware and repeated concrete jobs rather than PSI alone.
Winner by situation
Start with what you need it to do
Frequent work with pump servicing in mind
PowerShot's triplex pump is the platform distinction to investigate.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Better fit
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Good
First large residential patio job
The listed CM61118 scrubber may complete the needed accessory kit.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Good
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Better fit
Need more flow than 2.5 GPM
Both publish the same 2.5 GPM rating.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Not suitable
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Not suitable
Need a compact indoor-stored electric
Both require gasoline-engine ownership and safe outdoor operation.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Not suitable
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Not suitable
What matters in practice
The differences that matter
Both list the same rinse volume
Ten minutes at 2.5 GPM corresponds to 25 gallons for either machine.
How we reached this conclusion
2.5 × 10 = 25 gallons. This is trigger-time arithmetic at the listed flow, not equal cleaning coverage.
The higher pressure is only a modest step
CM61118's named pressure is about 6.1% above PS3228.
How we reached this conclusion
(3500 − 3300) ÷ 3300 × 100 = 6.06%. No cleaning-time improvement is inferred.
A surface-cleaner bundle can avoid a separate purchase
CM61118's official package lists a 15-inch scrubber.
How we reached this conclusion
The PS3228 and CM61118 bundle lists differ. Confirm the selected Amazon offer rather than assuming every seller includes it.
Choice A
Simpson, PS3228-S / PS3228
PowerShot 3300 PSI Gas Pressure Washer
A serious residential gas washer built around a Honda GX200 engine and serviceable AAA triplex pump for repeated large-area work.
- Best matched use
- Heavy concrete and frequent exterior cleaning
Checked facts
- 3300 PSI and 2.5 GPM manufacturer rating
- Honda GX200 engine paired with an AAA industrial triplex plunger pump
- 25-foot MorFlex hose, 10-inch pneumatic tires and five quick-connect nozzles
Choice B
Simpson, CM61118
Clean Machine 3500 PSI Gas Pressure Washer
A 50-state gas package pairing strong residential output with an included 15-inch steel surface scrubber for ready-to-go concrete cleaning.
- Best matched use
- Gas package with surface cleaner included
Checked facts
- 3500 PSI and 2.5 GPM manufacturer rating
- Kohler SH270 engine with AAA AX300 Pro axial-cam pump, adjustable unloader and thermal relief
- 25-foot MorFlex hose and included 15-inch steel surface scrubber. Listed for all 50 states
Meaningful differences
What changes the fit
| What changes | Simpson PowerShot 3300 PSI Gas Pressure Washer | Simpson Clean Machine 3500 PSI Gas Pressure Washer | Why it matters |
|---|---|---|---|
| Rated output | 3300 PSI,2.5 GPM | 3500 PSI,2.5 GPM | Water flow is tied while pressure differs modestly. |
| Engine | Honda GX200 | Kohler SH270 | Check parts and service for the exact engine. |
| Pump | AAA triplex plunger | AAA AX300 Pro axial | The pump platform is the more meaningful ownership distinction. |
| Included hose | 25 feet | 25 feet | There is no stock hose-reach upgrade. |
| Surface cleaner | Check chosen bundle | 15-inch scrubber listed by Simpson | An accessory bundle can change the ready-to-use cost. |
| State configuration | 49-state PS3228 | 50-state CM61118(-S) | Confirm the exact regional variant and current shipping restrictions. |
What you give up
Every choice has a cost
If you choose Simpson PowerShot 3300 PSI Gas Pressure Washer
- It is not sold for California use, and its included zero-degree tip requires exceptional care and is unnecessary for most homeowners.
If you choose Simpson Clean Machine 3500 PSI Gas Pressure Washer
- At 3500 PSI it demands careful nozzle distance on wood, paint and vehicles, while the bundled surface cleaner adds storage bulk.
What matters in practice
How to make the call
The flow tie is more useful than the pressure gap
The Clean Machine's 3500 PSI is about 6.1% above PowerShot's 3300 PSI. Both list 2.5 GPM. For broad concrete, attachment size, nozzle setup and steady progress can matter more than that modest pressure difference. Do not infer a 6% faster job from the name, or treat a wider accessory as proof that the pump has more flow.
Pump design changes the ownership question
PS3228 uses a Honda GX200 engine and AAA triplex pump. CM61118 uses a Kohler SH270 and AAA AX300 Pro axial pump. The PowerShot makes sense when you are choosing a service platform for repeated work, not simply buying the highest residential pressure rating. Confirm local parts and service availability for the engine and pump before treating that design as a long-term advantage.
The bundle matters on the first weekend
Simpson lists a 15-inch surface scrubber with CM61118. The PS3228 package should not be assumed to include the same accessory. If your first task is a broad patio, compare the complete cost of the washer plus correctly matched surface cleaner. Both are gasoline machines, so engine care, fuel storage, hearing protection and outdoor-only exhaust handling belong in the buying decision.
What this comparison cannot tell you
- Bundle contents and regional availability can differ between sellers. The pump design does not establish a quantified service-life advantage.
- Gas engines must run outdoors, away from openings. Never use them inside a garage.
What the facts say
What the comparison shows
Useful conclusions from the current pressure washers comparison, followed by the checked facts used to reach them.
Compared set
Only 1 of 28 models checked match every need here: “I need sustained heavy-duty cleaning”, “Pump serviceability matters”, and “I clean driveways and concrete”.
1 matching model from 28 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “I need sustained heavy-duty cleaning”, “Pump serviceability matters”, and “I clean driveways and concrete”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Simpson PowerShot 3300 PSI Gas Pressure Washer |
|
| |
| Simpson Clean Machine 3500 PSI Gas Pressure Washer |
|
|
Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Simpson PowerShot 3300 PSI Gas Pressure Washer
You want the AAA triplex pump platform
See price & reviews on AmazonSimpson Clean Machine 3500 PSI Gas Pressure Washer
You want a residential surface-cleaner bundle
See price & reviews on AmazonLinks open in a new tab.