Best Pressure Washers for Patios and Decks (2026)

The WPX3400e is the strongest electric here that tells you what it delivers working: 3000 PSI at 1.1 GPM, about 3,300 cleaning units. That much rated pressure lifts ground-in grime from concrete and pavers in a way the 2000 PSI machines cannot, while the pressure drops easily under a wide tip for wood.

The weak point is flow. At 1.1 GPM rated, a large patio is a slow job, and a surface cleaner attachment, which spins a rotary head over flat concrete for even results, needs adequate flow to turn properly, so check the attachment's minimum before you buy one. Against the gas machine in this guide, the electric is quieter, starts at a button and needs no fuel, though it covers ground far more slowly. Against the Greenworks 2000, it brings a clear pressure advantage for stains.

For wood, use a 25 or 40 degree tip, keep the wand moving with the grain and stay about a foot from the surface, testing a hidden board first. Drain the pump after use and before freezing weather. The true brushless motor and auto-stop pump are maintenance-free if kept free of grit.

For a wood deck, 2000 PSI at 1.2 GPM is closer to the right target than a bigger machine, and Greenworks says it was rated to PWMA standards, which at least ties the figures to a common test. At about 2,400 cleaning units it is gentle enough that a wide tip is hard to misuse.

The maker positions it for patio furniture, grills, walkways and vehicles, and a modest deck is a natural extension of that. It lacks the headroom to tackle old oil stains on concrete, which is where the WPX3400e earns its place. Compared with the ePX3500, it states less about the motor and pump, while costing less.

Wood needs careful technique more than power: wet the boards, apply cleaner at low pressure and let it dwell, then rinse with the grain using a 40 degree tip. Drain the pump after each use, avoid kinks in the hose and store the machine indoors in winter.

At 19 pounds and 16.5 inches tall, the ePX3500 is the easiest to carry up to a deck and drag around a patio, and the onboard 20-ounce soap tank means you can apply wood cleaner at low pressure without extra hardware. The rated output of 2000 PSI at 1.2 GPM matches the Greenworks 2000 on paper but with clearer documentation.

The rated numbers keep it in the gentle category, so it suits wood decks, composite boards and pavers rather than heavily stained concrete. Against the WPX3400e it is lighter and cheaper but gives up 1000 PSI of rated pressure, and against the Sun Joe SPX100-GO it lists a rated rather than a peak figure.

The braided nylon hose coils easily. Keep the quick-connect o-rings healthy, drain the pump before freezing weather, and flush the soap tank after each use so detergent does not harden inside it.

This is a small machine for small outdoor spaces: a 13 amp motor with 1800 PSI max and 1.7 GPM max, plus a 13.53-ounce onboard foam bottle for applying detergent. The maker compares its output to 25 times that of a 70 PSI garden hose, a fair description of a light-duty rinse.

Both maxima apply at different settings, so do not multiply them for a cleaning-unit figure. It is the gentlest machine in this guide, which suits a composite or softwood deck and a small paver patio. For concrete with set-in stains it lacks the punch of the WPX3400e.

Use the foam bottle at low pressure on wood and let it dwell, then rinse with a wide tip. Rinse the bottle and drain the pump after use, and keep the cord clear of puddles. Always plug into a GFCI-protected outlet when working on a wet deck, and wear shoes with grip, since a soapy board is slippery. Light and cheap to store, it makes sense for a balcony or a small patio.

A gas machine is the right tool for a large concrete patio, because flow decides how fast the area gets cleaned, and this listing claims 4.0 GPM from a 212cc engine. That is exactly why it deserves a hard look: 4200 PSI at 4.0 GPM needs about 9.8 hp of hydraulic power, and the engine is listed as 7 hp, so the two claims cannot both be true at the same moment.

The realistic reading is that the machine runs at a lower pressure, or a lower flow, or both, than the box says, much like the Westinghouse electrics list a max that only applies at one setting. It may still clean concrete well, but do not buy it expecting what the label promises, and check the pump and engine brand against your budget. Against the Westinghouse WPX3400e, it offers more potential flow with far more risk of disappointment.

If you buy it, treat it as a regular small-engine machine: change the oil, use fresh stabilized fuel, check the air filter and plug, and protect the pump by never running it dry. Winterize by draining it or running pump antifreeze. Use hearing and eye protection.

On paper this is the most powerful electric in the guide, with a foam cannon, a 35-foot hose, a Total Stop System that shuts the machine off when you release the trigger, and three ways to take in water. The claims are the problem: 4000 PSI at 2.8 GPM is about 6.5 hp of hydraulic power, or nearly 4.9 kilowatts, while a standard 15 amp, 120V outlet supplies under 1.8 kilowatts.

That gap means the printed figures are peaks that cannot be sustained or are simply inflated, and the machine will behave more like the 1800 to 2500 PSI class. The accessories may still be useful: the long hose and cannon help on a deck, and the stop system saves wear. Against the Westinghouse WPX3400e, it lacks a stated rated output and a recognizable brand behind it.

If you buy one, test it early, keep the receipt, flush the cannon and drain the pump after each use. Use wide tips on wood and let the cleaner dwell, and assume its real working output is far below the label. A useful check is to compare how a known garden-hose rinse and the machine behave on the same piece of concrete, so you can judge for yourself what the jet actually does before trusting it near wood.