Best Gas Pressure Washers in 2027

The IvyBess SUP36XX1 leads our ranking. It delivers 4200 PSI working pressure and a 4.0 GPM flow rate, tied for the highest pressure and flow on this page. That combination strips moss from patios, oil stains from driveways and old paint from fences much faster than a typical lower-pressure home washer.

A 7HP 4-stroke OHV 212CC gasoline engine with pull-start powers it. Five quick-connect nozzles cover light rinsing through heavy-duty blasting, and a detergent tank lets you apply soap with the low-pressure nozzle before washing it off. A 25ft high-pressure hose expands coverage so you move the machine less often.

At 66 lb with wheels, it is easy to roll across a yard. Be careful: 4200 PSI can damage soft wood, car paint and siding if you use the narrow nozzles too close, so start with a wider nozzle. The brand is less established than Simpson or Westinghouse, and there are several near-identical IvyBess listings on this page. For maximum cleaning power at home, it is the top pick.

Second in our ranking, the Simpson ALH4240 is a professional-grade washer that matches the leader at 4200 PSI and 4.0 GPM. The difference is in the parts: a HONDA GX390 engine with low-oil shutdown and a CAT triplex plunger pump with thermal relief to prevent overheating.

Triplex plunger pumps are designed for long working lives and can be serviced, which matters for contractors and anyone who uses a washer every week. The 50' dual-braided high-pressure hose, the longest on this page, resists kinks and abrasion, and its non-marring jacket protects finished surfaces.

13 in pneumatic tires roll over gravel, grass and curbs, and the frame is aircraft grade aluminum with a powder coat. At 133 lb it is by far the heaviest washer here, so it is harder to lift into a truck. Simpson lists decks, driveways, siding, fencing, equipment and graffiti among its jobs. For heavy, frequent use, it is the most durable choice.

This IvyBess 4200 PSI gas pressure washer ranks third and shares the leader's specs: 4200 PSI working pressure, 4.0 GPM, a 7HP 212CC OHV gasoline engine, 5 quick-connect nozzles, a detergent tank, wheels and a 25ft hose.

It also weighs 66 lb, so it is just as easy to roll around a driveway or yard. The nozzles cover everything from soaping to deep cleaning of concrete and brick, and the 25ft hose lets you reach across a patio without moving the machine.

Because it appears to be the same machine under another listing, buy whichever IvyBess listing is in stock or offers better delivery. The same advice applies: start with a wider nozzle on wood, siding and vehicles. Warranty is not listed in our data. If the top listing is unavailable, this one gives the same cleaning power.

Fourth in our ranking, the Steupoek STE89 also reaches up to 4200 PSI at 4.0 GPM, powered by a 7HP 4-stroke 212cc gasoline engine with a recoil start. It comes with a 32 ft hose, longer than the IvyBess listings, so you can reach farther before moving the machine.

Five quick-connect nozzles handle light, medium and heavy-duty cleaning, and a detergent tank lets you pre-soak dirty surfaces. The spray wand has a 1/4 in standard quick-connect end, so you can add a surface cleaner, extension wand or undercarriage cleaner later.

At 66 lb with wheels, it weighs the same as the IvyBess models. Steupoek is a lesser-known brand and warranty is not listed in our data. For buyers who value a slightly longer hose and accessory compatibility, it is a solid alternative at this power level. Add a surface cleaner to the quick-connect wand for large driveways and it will finish them faster and more evenly.

The IvyBess NAP36XX3 completes our top five. It is rated at 4200 PSI and 4.0 GPM with a 7HP 212CC OHV engine, 5 quick-connect nozzles, a detergent tank, wheels and a 25ft hose, the same core package as the other IvyBess listings.

It weighs 66 lb and handles driveways, decks, fences and outdoor furniture. The 0° nozzle reaches high areas and crevices, while wider nozzles are safer for wood and painted surfaces.

With several IvyBess listings on this page, compare them on availability, delivery and any accessories included rather than core specs. The DEWALT and Westinghouse models lower in our ranking offer less pressure but better-known brands. For the most power per dollar, the IvyBess family is hard to beat, and this listing is a fine choice if it is the one in stock. Use fuel stabilizer if it sits for months, and run pump protector through it before winter.