Best Pressure Washers for Houses and Siding (2026)

For house washing, flow does a lot of the work, because a wall is mostly a rinse job after the detergent has done its dwell. The Greenworks lists up to 2.0 GPM with JETTFLOW technology, which the maker says delivers up to 50% more flow for rinsing and reaching higher areas, and states that the pressure and flow figures were verified by an independent lab. That is useful when so many figures on this category are only claims.

The 3000 PSI is far more than siding needs, but a machine that can do 3000 can be throttled back with a wide tip, and the same unit then handles concrete and decks. Against the Westinghouse WPX3000e, it offers higher flow, though the Westinghouse states a lower rated figure honestly. Against the Greenworks 2000, you pay for the brushless motor and the extra reach in rinsing.

For siding, use a 25 or 40 degree tip, keep the lance angled downward, work top to bottom and let the soap dwell without drying. The axial cam pump is not rebuildable, so keep it from running dry and drain it before freezing weather. On a big house, plan the job in sections: soap a manageable area, rinse it before the cleaner dries, then move on, rather than coating the whole house and racing the sun. Early morning or overcast days give you the longest dwell time.

The WPX3000e spells out what it does under load: 2600 PSI at 1.1 GPM, about 2,860 cleaning units, with a 3000 PSI and 1.76 GPM peak at different settings. For siding, that rated flow of 1.1 GPM is the number to notice, because it means a wall takes longer to rinse than with the Greenworks.

The heavy-duty induction motor and axial three-piston auto-stop pump are built to be low maintenance, and the induction design tends to run quietly. A 25-foot abrasion-resistant hose with a metal gun and a wand with five quick-connect nozzles come in the box. Against the ePX3500 it gives more rated pressure, at the same sort of flow.

The practical advice for house washing is to use the soap nozzle at low pressure for the detergent pass, let it dwell for several minutes but not dry, and rinse from the top down with a wide tip. Keep the lance low and angled down so water cannot get behind laps. Drain the pump after use. Work with the wind at your back so overspray does not blow onto freshly rinsed siding, and cover nearby plants with a tarp before you start, since detergent runoff can burn tender foliage.

A sensible machine for siding because 2000 PSI at 1.2 GPM is a rated output that needs no throttling for vinyl, and the onboard 20-ounce soap tank means you can apply cleaner at low pressure without extra equipment. It stands 16.5 inches tall, weighs about 19 pounds and has four quick-lock wheels with anti-tipping design, so it follows you around the house.

The braided nylon hose coils easily and resists kinking, a small point that matters when you drag it along a long wall. Compared with the ePX3100 below, this model offers a higher rated pressure, though the flow is almost the same. Against the WPX3000e it is lighter and easier to store, at the price of 600 PSI of rated output.

To care for it, store the hose coiled loosely, drain the pump, and check the quick-connect o-rings. Run detergent only through the soap nozzle setting, flush the tank after use and never leave chemicals sitting in it.

The ePX3100 is the older, plainer sibling of the ePX3500, rated at 1900 PSI and 1.24 GPM, about 2,356 cleaning units. That is a hair higher flow than the ePX3500 and a little less pressure, which is arguably the better balance for rinsing siding.

It shares the 16.5-inch height, 19-pound weight and anti-tipping layout, so it is just as easy to move around a house. At this level it is best for a typical single-storey home where the job is a soap pass and a rinse, not a deep clean on stubborn stains. Compared with the Greenworks 2000, the Westinghouse spells out rated figures, which makes comparison straightforward.

Keep the lance angled down, rinse top to bottom, and use the wide tips. The on-board hose reel is the piece that earns its keep here, since a coiled hose kinks far less on a two-storey wall than a loose one dragged around the house. Before you begin, close windows and doors, check that window screens and weep holes are intact, and tape over any exterior outlets or light fixtures, since a stream can force water into places a garden hose never reaches.

A long 35-foot GFCI cord is the practical advantage here, because a house wash often means moving around a whole building with a single outlet nearby. The low 26-inch cart on 5-inch never-flat wheels follows you around without tipping on uneven ground, and a foam cannon is included for applying cleaner.

Rated at 1800 PSI and 1.2 GPM, it is the gentlest of the Westinghouse set, which suits vinyl and painted wood siding well. The foam cannon coats a wall with clinging cleaner, which gives a long dwell time, though it dilutes through the cannon rather than the downstream injector. Against the ePX3500, you trade a built-in tank for a cannon and a longer cord.

Flush the cannon with clean water after each use so soap does not dry in the orifice, drain the pump and coil the cord loosely. Check the wheels for grit and keep the machine upright when you store it.

Greenworks says this unit was rated in accordance with PWMA standards, the industry body's test method, which at least ties the 2000 PSI and 1.2 GPM figures to a common procedure. That works out to about 2,400 cleaning units, in line with the Westinghouse ePX3500.

The maker positions it for medium-duty projects such as patio furniture, grills, walkways and vehicles, and that is a fair description of what it will do on siding too: a soap pass and a gentle rinse on a modest house. Compared with the Greenworks 3000, it is far less powerful and has no brushless motor, but it also costs less and is far easier to control around trim and windows. Against the Westinghouse machines it is plainer, with fewer accessories documented.

Upkeep is minimal, as there is no engine to maintain. With no engine and a short lance, the only routine task is keeping the quick-connect collar clean so tips seat fully under load. Keep a spare pair of quick-connect o-rings in the toolbox, and never leave the machine outdoors over winter.