Brands:All Brands Westinghouse SIMPSON Cleaning Sun Joe Kärcher DEWALT Greenworks Pro Generac WORX

Brand guide · closest verified alternatives · Oct 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

Overall Electric Washer (Won't Tip Over)Westinghouse ePX3100v Electric Pressure Washer — 2100 Max PSI, 1.76 GPM, 4-Wheel Anti-TipLow-Profile 4-Wheel Electric · Mid-Range

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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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Heavy-Duty 120V Cleaning & Quiet Induction MotorGreenworks Pro 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

Pick	Best for	PSI · GPM · Cleaning Units	Motor / Engine & Pump	Hose, Nozzles & Frame	Weight & Power Source	Listing
Mid-RangeWestinghouseePX3100v Anti-Tip (2100 PSI)	Overall Electric Washer (Won't Tip Over)	2,100 Max PSI · 1.76 Max GPM · 3,696 CU	13-Amp 120V electric motor · Auto-stop Total Stop System pump	20 ft hose · 4 quick-connect tips (0°, 15°, 25°, soap) + 600ml foam cannon	20.0 lbs · 360° 4-wheel anti-tip base · 35 ft GFCI cord	Check price on Amazon
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
PremiumGreenworks ProPro 2300 TruBrushless	Heavy-Duty 120V Cleaning & Quiet Induction Motor	2,300 Max PSI · 2.3 Max GPM (1.2 rated @ max PSI) · PWMA Certified	14-Amp 120V TruBrushless digital induction motor · Axial pump	25 ft kink-resistant hose · 5 QC nozzles (15°, 25°, 40°, soap, turbo)	43.9 lbs · 10" wheels on steel cart · 35 ft GFCI cord	Check price on Amazon

Alternatives, ranked by fit

WestinghouseMid-RangeBest for: Overall Electric Washer (Won't Tip Over)

Westinghouse ePX3100v Electric Pressure Washer — 2100 Max PSI, 1.76 GPM, 4-Wheel Anti-Tip

Our #1 overall electric pick solves the constant tipping problem of upright carts with a 13.5-inch low-center-of-gravity 4-wheel chassis while delivering 2,100 PSI and 1.76 GPM (3,696 Cleaning Units) plus an included foam cannon.

PSI · GPM · Cleaning Units2,100 Max PSI · 1.76 Max GPM · 3,696 CU

Motor / Engine & Pump13-Amp 120V electric motor · Auto-stop Total Stop System pump

Hose, Nozzles & Frame20 ft hose · 4 quick-connect tips (0°, 15°, 25°, soap) + 600ml foam cannon

Weight & Power Source20.0 lbs · 360° 4-wheel anti-tip base · 35 ft GFCI cord

Watch out for: Included 20-foot hose is fairly stiff—adding a 25-foot flexible uberflex-style extension hose lets you walk around a full SUV without moving the base.

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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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Greenworks ProPremiumBest for: Heavy-Duty 120V Cleaning & Quiet Induction Motor

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

Uses a 14-amp TruBrushless induction motor that senses water demand automatically, runs noticeably quieter than universal brushed motors, and comes with a 25-foot uberflex hose.

PSI · GPM · Cleaning Units2,300 Max PSI · 2.3 Max GPM (1.2 rated @ max PSI) · PWMA Certified

Motor / Engine & Pump14-Amp 120V TruBrushless digital induction motor · Axial pump

Hose, Nozzles & Frame25 ft kink-resistant hose · 5 QC nozzles (15°, 25°, 40°, soap, turbo)

Weight & Power Source43.9 lbs · 10" wheels on steel cart · 35 ft GFCI cord

Watch out for: At 43.9 lbs, it is more than twice as heavy to lift into a trunk as the 20 lb Westinghouse ePX3100v.

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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 ePX3100v Electric Pressure Washer — 2100 Max PSI, 1.76 GPM, 4-Wheel Anti-Tip

Check price on Amazon