The catch
Simpson PowerShot 3300 PSI Gas Pressure Washer
Weighing roughly 77 pounds and running a gas engine, it is louder, heavier and needs more upkeep than any of the corded electrics listed here.
Side by side
Simpson PowerShot PS3228 vs Clean Machine CM61118 compared: Both rate 2.5 GPM, PowerShot has the edge in serviceability
Quick verdict
PowerShot PS3228 fits when you put a triplex pump and frequent, serviceable use first. Clean Machine CM61118 fits residential concrete cleaning, thanks to its listed surface scrubber bundle. Both are rated at 2.5 GPM, so the 3500 PSI label gets you no extra listed water flow.
Before you buy
Why, and what it costs you
Listed rinse volume is identical
For either machine, 2.5 GPM over ten minutes comes to 25 gallons.
Where this comes from
This is trigger-time arithmetic at the listed flow and not equal cleaning coverage: 2.5 × 10 = 25 gallons.
The catch
Simpson Clean Machine 3500 PSI Gas Pressure Washer
Its AAA AX300 Pro pump is an upgraded axial-cam design. The PS3228 uses the serviceable triplex type.
Simpson PowerShot 3300 PSI Gas Pressure Washer
- Why pick it
- You are after the AAA triplex pump platform
- Frequent exterior cleaning and ongoing maintenance are in your plans
- The catch
- Weighing roughly 77 pounds and running a gas engine, it is louder, heavier and needs more upkeep than any of the corded electrics listed here.
Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Why pick it
- A residential surface-cleaner bundle is what you want
- Where you are buying is covered by the 50-state CM61118 configuration
- The catch
- Its AAA AX300 Pro pump is an upgraded axial-cam design. The PS3228 uses the serviceable triplex type.
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What this page compares
Simpson's PS3228 and CM61118 compared on pump design, bundled surface-cleaning hardware and repeated concrete jobs. PSI alone does not decide it.
Which one fits
Pick the situations that sound like you
Regular work where pump servicing is a consideration
The platform distinction worth investigating is PowerShot's triplex pump.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Better fit
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Good
A first big residential patio job
The listed CM61118 scrubber may round out the accessory kit you need.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Good
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Better fit
Want flow beyond 2.5 GPM
The same 2.5 GPM rating is published for both.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Not suitable
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Not suitable
Want a compact electric that stores indoors
Owning a gasoline engine and operating it safely outdoors is required for both.
- Simpson PowerShot 3300 PSI Gas Pressure Washer
- Not suitable
- Simpson Clean Machine 3500 PSI Gas Pressure Washer
- Not suitable
In practice
Differences you will notice
Listed rinse volume is identical
For either machine, 2.5 GPM over ten minutes comes to 25 gallons.
How we worked this out
This is trigger-time arithmetic at the listed flow and not equal cleaning coverage: 2.5 × 10 = 25 gallons.
The extra pressure is just a modest step up
CM61118's named pressure sits about 6.1% above PS3228's.
How we worked this out
No cleaning-time improvement is inferred from (3500 − 3300) ÷ 3300 × 100 = 6.06%.
A bundle with a surface cleaner can save buying one separately
A 15-inch scrubber appears in CM61118's official package listing.
How we worked this out
Bundle lists for the PS3228 and CM61118 are not the same. Confirm what the selected Amazon offer includes and do not assume every seller adds it.
Option A
Simpson, PS3228-S / PS3228
PowerShot 3300 PSI Gas Pressure Washer
This is a serious residential gas washer, built on a Honda GX200 engine and a serviceable AAA triplex pump for large areas that get cleaned again and again.
- Best for
- Heavy concrete work and frequent cleaning outdoors
Facts we checked
- Manufacturer rating of 3300 PSI and 2.5 GPM
- An AAA industrial triplex plunger pump paired with a Honda GX200 engine
- Five quick-connect nozzles, 10-inch pneumatic tires and a 25-foot MorFlex hose
Option B
Simpson, CM61118
Clean Machine 3500 PSI Gas Pressure Washer
This 50-state gas package pairs strong residential output with a 15-inch steel surface scrubber in the box, so you can start on concrete right away.
- Best for
- A gas washer that comes with a surface cleaner
Facts we checked
- Manufacturer rating of 3500 PSI and 2.5 GPM
- AAA AX300 Pro axial-cam pump, adjustable unloader and thermal relief, driven by a Kohler SH270 engine
- A 15-inch steel surface scrubber comes with a 25-foot MorFlex hose. Listed for all 50 states
Spec by spec
Where they really differ
| Spec | Simpson PowerShot 3300 PSI Gas Pressure Washer | Simpson Clean Machine 3500 PSI Gas Pressure Washer | In practice |
|---|---|---|---|
| Rated output | 3300 PSI,2.5 GPM | 3500 PSI,2.5 GPM | Pressure differs a little, and water flow is a tie. |
| Engine | Honda GX200 | Kohler SH270 | Look into parts and service for the specific engine. |
| Pump | AAA triplex plunger | AAA AX300 Pro axial | The more meaningful distinction for ownership is the pump platform. |
| Included hose | 25 feet | 25 feet | Stock hose reach is not upgraded. |
| Surface cleaner | Check chosen bundle | 15-inch scrubber listed by Simpson | What it costs to be ready to use can shift with an accessory bundle. |
| State configuration | 49-state PS3228 | 50-state CM61118(-S) | Check the exact regional variant and the shipping restrictions in force. |
Trade-offs
What each pick costs you
With Simpson PowerShot 3300 PSI Gas Pressure Washer
- It is not sold for use in California. The zero-degree tip it comes with takes exceptional care, and most homeowners don't need it.
With Simpson Clean Machine 3500 PSI Gas Pressure Washer
- On wood, paint and vehicles, 3500 PSI means you must watch how close the nozzle gets. The bundled surface cleaner also takes up more storage space.
Decision guide
How to decide
The PowerShot PS3228 is the choice when the priority is a triplex pump and frequent serviceable use. The Clean Machine CM61118 is the choice 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.
Equal flow tells you more than the pressure gap does
At 3500 PSI, the Clean Machine sits about 6.1% above PowerShot's 3300 PSI. Both list 2.5 GPM. On broad concrete, attachment size, nozzle setup and steady progress can count for more than that modest pressure gap. Don't read a 6% faster job into the name, and don't take a wider accessory as proof of more flow from the pump.
The pump design changes what owning it involves
The PS3228 runs a Honda GX200 engine and an AAA triplex pump. The CM61118 has a Kohler SH270 and an AAA AX300 Pro axial pump. PowerShot makes sense when you are picking a platform you can service for repeated work and not just buying the highest residential pressure rating. Before you count that design as a long-term advantage, confirm that parts and service for the engine and pump are available locally.
The bundle counts from the very first weekend
A 15-inch surface scrubber is listed by Simpson with the CM61118. Don't assume the PS3228 package includes the same accessory. When a broad patio is your first job, compare the full cost of the washer plus a correctly matched surface cleaner. Because both run on gasoline, engine care, fuel storage, hearing protection and outdoor-only exhaust handling should factor into your decision.
What this page can’t tell you
- Sellers may differ on bundle contents and regional availability. Nothing about the pump design proves a service-life advantage in quantified terms.
- Run gas engines outdoors, clear of openings, and never inside a garage.
By the numbers
What the data shows
What we found across the pressure washers we compare, plus the checked facts behind each finding.
How many fit
Only 1 of the 28 models checked meet every need here: “I have long, heavy-duty cleaning to do”, “A serviceable pump matters”, and “Driveways and concrete are what I clean”.
1 model fits, out of 28 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “I have long, heavy-duty cleaning to do”, “A serviceable pump matters”, and “Driveways and concrete are what I clean”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Simpson PowerShot 3300 PSI Gas Pressure Washer |
|
| |
| Simpson Clean Machine 3500 PSI Gas Pressure Washer |
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|
Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Simpson PowerShot 3300 PSI Gas Pressure Washer
You are after the AAA triplex pump platform
See price & reviews on AmazonSimpson Clean Machine 3500 PSI Gas Pressure Washer
A residential surface-cleaner bundle is what you want
See price & reviews on AmazonEach link opens in a new tab.
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