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Brand guide · 3 models compared · Oct 2026

SIMPSON Cleaning Pressure Washer: Lineup, Key Specs & How They Compare

Industry leader in welded-steel gas pressure washers powered by Honda GC190 and GX200 engines with axial and AAA triplex pumps, plus 15-inch steel surface cleaners.

Quick verdict

Best for: MegaShot homeowner & PowerShot commercial gas. Focus: Honda-Powered Gas & Surface Discs. Top SIMPSON Cleaning model in our catalog: SIMPSON Cleaning MegaShot MSH3125 Gas Pressure Washer — 3200 PSI, 2.5 GPM, Honda GC190.

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Which SIMPSON Cleaning should you buy?

Driveways, Sidewalks & Heavy Concrete GrimeSIMPSON Cleaning MegaShot MSH3125 Gas Pressure Washer — 3200 PSI, 2.5 GPM, Honda GC190Homeowner Gas Pressure Washer · Premium

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Contractors, Paint Prep & Long-Run DurabilitySIMPSON PowerShot PS3228 Commercial Gas Pressure Washer — 3300 PSI, 2.5 GPM, Honda GX200 + AAA TriplexCommercial Triplex Gas Washer · Flagship

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Cutting Driveway Cleaning Time by 60% (No Zebra Stripes)SIMPSON Cleaning 80165 15-Inch Universal Steel Surface Cleaner Attachment (2200–3700 PSI)15-Inch Rotary Driveway Scrubber · Mid-Range

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SIMPSON Cleaning specs, side by side

Pick	Best for	PSI · GPM · Cleaning Units	Motor / Engine & Pump	Hose, Nozzles & Frame	Weight & Power Source	Listing
PremiumSIMPSON CleaningMegaShot MSH3125 (3200 PSI)	Driveways, Sidewalks & Heavy Concrete Grime	3,200 PSI · 2.5 GPM · 8,000 CU	Honda GC190 / Kohler 190cc OHC engine · Maintenance-free axial cam pump	25 ft MorFlex M22 hose · 5 QC nozzles (0°, 15°, 25°, 40°, soap)	64.0 lbs · Unleaded gasoline · 10" pneumatic tires	Check price on Amazon
FlagshipSIMPSON CleaningPowerShot PS3228 (GX200)	Contractors, Paint Prep & Long-Run Durability	3,300 PSI · 2.5 GPM · 8,250 CU	Honda GX200 commercial OHV engine · AAA Industrial Triplex Plunger Pump	25 ft steel-braided Monster hose · 5 QC tips · Welded steel frame	71.0 lbs · Unleaded gasoline · 10" pneumatic tires	Check price on Amazon
Mid-RangeSIMPSON Cleaning15" Steel Surface Cleaner	Cutting Driveway Cleaning Time by 60% (No Zebra Stripes)	Rated for 2,200 to 3,700 PSI washers (1.8 to 3.4 GPM)	Dual spinning high-pressure weld-steel rotor bar	15 in. powder-coated steel shroud w/ splash-free bristle skirt	9.0 lbs · Universal 1/4-inch QC wand plug	Check price on Amazon

Every SIMPSON Cleaning model, ranked

SIMPSON CleaningPremiumBest for: Driveways, Sidewalks & Heavy Concrete Grime

SIMPSON Cleaning MegaShot MSH3125 Gas Pressure Washer — 3200 PSI, 2.5 GPM, Honda GC190

Delivers 8,000 Cleaning Units (3,200 PSI × 2.5 GPM)—more than double the stripping power of a 120V electric unit—on a welded steel frame with 10-inch pneumatic tires.

PSI · GPM · Cleaning Units3,200 PSI · 2.5 GPM · 8,000 CU

Motor / Engine & PumpHonda GC190 / Kohler 190cc OHC engine · Maintenance-free axial cam pump

Hose, Nozzles & Frame25 ft MorFlex M22 hose · 5 QC nozzles (0°, 15°, 25°, 40°, soap)

Weight & Power Source64.0 lbs · Unleaded gasoline · 10" pneumatic tires

Watch out for: Requires gas/oil maintenance and Pump Saver winterizing before freezing temperatures.

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SIMPSON CleaningFlagshipBest for: Contractors, Paint Prep & Long-Run Durability

SIMPSON PowerShot PS3228 Commercial Gas Pressure Washer — 3300 PSI, 2.5 GPM, Honda GX200 + AAA Triplex

Pairs the commercial-grade Honda GX200 engine (with Oil Alert) and a rebuildable AAA industrial triplex plunger pump with thermal relief and an unloader dial.

PSI · GPM · Cleaning Units3,300 PSI · 2.5 GPM · 8,250 CU

Motor / Engine & PumpHonda GX200 commercial OHV engine · AAA Industrial Triplex Plunger Pump

Hose, Nozzles & Frame25 ft steel-braided Monster hose · 5 QC tips · Welded steel frame

Weight & Power Source71.0 lbs · Unleaded gasoline · 10" pneumatic tires

Watch out for: Overkill and heavy (71 lbs) if you only wash your car and small patio twice a year.

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SIMPSON CleaningMid-RangeBest for: Cutting Driveway Cleaning Time by 60% (No Zebra Stripes)

SIMPSON Cleaning 80165 15-Inch Universal Steel Surface Cleaner Attachment (2200–3700 PSI)

Snaps onto any 1/4-inch quick-connect wand (rated 2,200 to 3,700 PSI) and spins dual high-pressure jets under a 15-inch powder-coated steel shroud to clean wide concrete paths without wand streaks.

PSI · GPM · Cleaning UnitsRated for 2,200 to 3,700 PSI washers (1.8 to 3.4 GPM)

Motor / Engine & PumpDual spinning high-pressure weld-steel rotor bar

Hose, Nozzles & Frame15 in. powder-coated steel shroud w/ splash-free bristle skirt

Weight & Power Source9.0 lbs · Universal 1/4-inch QC wand plug

Watch out for: Requires at least 2,200 PSI and 1.8+ GPM—underpowered 1,700 PSI electric washers won't spin the 15-inch steel bar at full speed.

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Check on any SIMPSON Cleaning listing

✓The exact model, size or pack on the listing (ASIN) matches the one in our table.
✓PSI · GPM · Cleaning Units: confirm it on the listing before you buy.
✓Motor / Engine & Pump: confirm it on the listing before you buy.
✓Hose, Nozzles & Frame: confirm it on the listing before you buy.
✓Weight & Power Source: confirm it on the listing before you buy.

About SIMPSON Cleaning

Industry leader in welded-steel gas pressure washers powered by Honda GC190 and GX200 engines with axial and AAA triplex pumps, plus 15-inch steel surface cleaners.

HydroWashers.com is independent and not affiliated with or endorsed by SIMPSON Cleaning. Trademarks belong to their owners.

SIMPSON Cleaning vs…

SIMPSON Cleaning vs Westinghouse→SIMPSON Cleaning vs Sun Joe→SIMPSON Cleaning vs Kärcher→SIMPSON Cleaning vs DEWALT→Open the compare tool →

SIMPSON Cleaning FAQ

Who is SIMPSON Cleaning best for?

Industry leader in welded-steel gas pressure washers powered by Honda GC190 and GX200 engines with axial and AAA triplex pumps, plus 15-inch steel surface cleaners. Best for: MegaShot homeowner & PowerShot commercial gas.

Is HydroWashers.com affiliated with SIMPSON Cleaning?

No. HydroWashers.com is independent, SIMPSON Cleaning doesn’t pay for placement, and all brand names and trademarks belong to their owners.

What is more important on a pressure washer: PSI or GPM?

Both matter together—multiply PSI × GPM to get Cleaning Units (CU). PSI (pounds per square inch) is the stripping force that breaks grime loose, while GPM (gallons per minute) is the water volume that flushes dirt away. For washing cars, you actually want moderate pressure (1,500–2,100 PSI) and higher GPM (1.5–1.76+ GPM) so you don't damage paint.

Best SIMPSON Cleaning in our catalog

SIMPSON Cleaning MegaShot MSH3125 Gas Pressure Washer — 3200 PSI, 2.5 GPM, Honda GC190

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