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Brands:All BrandsWestinghouseSIMPSON CleaningSun JoeKärcherDEWALTGreenworks ProGeneracWORX
Brand guide · closest verified alternatives · Nov 2026

Generac Pressure Washer: Lineup, Key Specs & How They Compare

Pushes residential gas water flow up to 2.7 GPM (8,640 Cleaning Units) with an ergonomic PowerDial trigger gun.

Quick verdict

Best for: 2.7 GPM SpeedWash 7122 concrete rinsing. Focus: High-GPM Residential Gas. We don’t list a Generac model yet, so compare it against the closest verified picks below.

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Closest verified alternatives to Generac

Westinghouse ePX3100 Electric Pressure Washer — 2300 Max PSI, 1.76 GPM, 4-Wheel Anti-Tip
Overall Electric Washer (Won't Tip Over)Westinghouse ePX3100 Electric Pressure Washer — 2300 Max PSI, 1.76 GPM, 4-Wheel Anti-TipLow-Profile 4-Wheel Electric · Mid-Range
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SIMPSON Cleaning MegaShot MS61222-S Gas Pressure Washer — 3100 PSI, 2.3 GPM, CRX165 Engine
Driveways, Sidewalks & Heavy Concrete GrimeSIMPSON Cleaning MegaShot MS61222-S Gas Pressure Washer — 3100 PSI, 2.3 GPM, CRX165 EngineHomeowner Gas Pressure Washer · Premium
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Greenworks 2300 PSI TruBrushless Electric Pressure Washer (2.3 Max GPM, PWMA Certified)
Heavy-Duty 120V Cleaning & Brushless MotorGreenworks 2300 PSI TruBrushless Electric Pressure Washer (2.3 Max GPM, PWMA Certified)Brushless Induction Electric · Premium
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Generac specs, side by side

PickBest forPSI · GPM · Cleaning UnitsMotor / Engine & PumpHose, Nozzles & FrameWeight & Power SourceListing
Mid-RangeWestinghouseePX3100 Anti-Tip (2300 PSI)
Overall Electric Washer (Won't Tip Over)2,300 Max PSI · 1.76 Max GPM · 1,900 PSI / 1.24 GPM rated120V electric motor · Auto-stop pump25 ft nylon-braided hose · 5 QC nozzles (0°, 15°, 25°, turbo, soap) · 20 oz soap tank19 lbs · 16.5" tall · 4 × 360° wheelsCheck price on Amazon
PremiumSIMPSON CleaningMegaShot MS61222-S (3100 PSI)
Driveways, Sidewalks & Heavy Concrete Grime3,100 PSI · 2.3 GPMCRX165 residential engine · OEM Technologies axial cam pump w/ thermal relief25 ft MorFlex 1/4" hose · 4 QC tips (0°, 15°, 40°, soap) · 16" steel wand54 lbs · Unleaded gasoline · 12" never-flat wheelsCheck price on Amazon
PremiumGreenworks ProGreenworks 2300 TruBrushless
Heavy-Duty 120V Cleaning & Brushless Motor2,300 Max PSI · 2.3 Max GPM · PWMA CertifiedTruBrushless motor · Axial cam pump25 ft kink-resistant hose · 5 QC nozzles (15°, 25°, 40°, soap, turbo)41.2 lbs (18.7 kg) · 10" wheels · 35 ft GFCI cordCheck price on Amazon

Alternatives, ranked by fit

Westinghouse ePX3100 Electric Pressure Washer — 2300 Max PSI, 1.76 GPM, 4-Wheel Anti-Tip#1
WestinghouseMid-RangeBest for: Overall Electric Washer (Won't Tip Over)

Westinghouse ePX3100 Electric Pressure Washer — 2300 Max PSI, 1.76 GPM, 4-Wheel Anti-Tip

Our #1 overall electric pick uses four 360° quick-lock wheels and a low center of gravity to resist tipping, delivering 2,300 max PSI (1,900 rated) and up to 1.76 GPM with a 20 oz onboard soap tank.

PSI · GPM · Cleaning Units2,300 Max PSI · 1.76 Max GPM · 1,900 PSI / 1.24 GPM rated
Motor / Engine & Pump120V electric motor · Auto-stop pump
Hose, Nozzles & Frame25 ft nylon-braided hose · 5 QC nozzles (0°, 15°, 25°, turbo, soap) · 20 oz soap tank
Weight & Power Source19 lbs · 16.5" tall · 4 × 360° wheels
Watch out for: Rated output is 1,900 PSI and 1.24 GPM—well below the max figures—so heavy concrete stains take longer than with a gas washer.
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SIMPSON Cleaning MegaShot MS61222-S Gas Pressure Washer — 3100 PSI, 2.3 GPM, CRX165 Engine#2
SIMPSON CleaningPremiumBest for: Driveways, Sidewalks & Heavy Concrete Grime

SIMPSON Cleaning MegaShot MS61222-S Gas Pressure Washer — 3100 PSI, 2.3 GPM, CRX165 Engine

Delivers 3,100 PSI at 2.3 GPM from a CRX165 residential engine and a maintenance-free OEM Technologies axial cam pump with thermal relief, on a welded, powder-coated steel frame with 12-inch never-flat wheels.

PSI · GPM · Cleaning Units3,100 PSI · 2.3 GPM
Motor / Engine & PumpCRX165 residential engine · OEM Technologies axial cam pump w/ thermal relief
Hose, Nozzles & Frame25 ft MorFlex 1/4" hose · 4 QC tips (0°, 15°, 40°, soap) · 16" steel wand
Weight & Power Source54 lbs · Unleaded gasoline · 12" never-flat wheels
Watch out for: Requires gas/oil maintenance and winterizing before freezing temperatures; 49-state compliant.
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Greenworks 2300 PSI TruBrushless Electric Pressure Washer (2.3 Max GPM, PWMA Certified)#3
Greenworks ProPremiumBest for: Heavy-Duty 120V Cleaning & Brushless Motor

Greenworks 2300 PSI TruBrushless Electric Pressure Washer (2.3 Max GPM, PWMA Certified)

Uses a TruBrushless motor with Smart Flow and water pressure-sensing technology, an axial cam pump, a 25-foot kink-resistant hose and a 35-foot GFCI power cord.

PSI · GPM · Cleaning Units2,300 Max PSI · 2.3 Max GPM · PWMA Certified
Motor / Engine & PumpTruBrushless motor · Axial cam pump
Hose, Nozzles & Frame25 ft kink-resistant hose · 5 QC nozzles (15°, 25°, 40°, soap, turbo)
Weight & Power Source41.2 lbs (18.7 kg) · 10" wheels · 35 ft GFCI cord
Watch out for: At about 41 lbs (18.7 kg), it is roughly twice as heavy to lift into a trunk as the 19 lb Westinghouse ePX3100.
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Check on any Generac 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 Generac

Pushes residential gas water flow up to 2.7 GPM (8,640 Cleaning Units) with an ergonomic PowerDial trigger gun.

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

Generac vs…

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

Generac FAQ

Who is Generac best for?

Pushes residential gas water flow up to 2.7 GPM (8,640 Cleaning Units) with an ergonomic PowerDial trigger gun. Best for: 2.7 GPM SpeedWash 7122 concrete rinsing.

Is HydroWashers.com affiliated with Generac?

No. HydroWashers.com is independent, Generac 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.

Closest top pick to compare

Westinghouse ePX3100 Electric Pressure Washer — 2300 Max PSI, 1.76 GPM, 4-Wheel Anti-Tip

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27 Verified Pressure Washers & Kits Compared
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