Are Pressure Washer Surface Cleaners Worth It?

On this page (8 sections)

1. Why do surface cleaners beat a bare wand on flat concrete?
2. How much faster and cleaner is the job in practice?
3. What should you check before you buy one?
4. When is a surface cleaner not worth the money?
5. How do you get a streak-free result with one?
6. Does a surface cleaner save water and detergent?
7. What about storage and upkeep?
8. So, are pressure washer surface cleaners worth it for you?

Yes, a surface cleaner is worth it if you clean flat concrete, patios, decks or driveways more than once or twice a year. It covers a wide path in one pass and keeps the nozzles at a fixed height, so the job goes faster and finishes without the zebra stripes a bare wand leaves.

The short version: the attachment costs less than the time and water you save on a normal driveway. It is not worth it for one small slab, for gravel, or for a very weak washer.

Everything below explains where the money goes and when to skip it.

Why do surface cleaners beat a bare wand on flat concrete?

A surface cleaner cleans faster and more evenly because it spins two nozzles inside a fixed shroud instead of waving one jet by hand. The shroud holds the spray close to the surface and keeps it off your legs, walls and plants.

With a wand you push a single jet back and forth. Overlap is uneven, the angle changes as your arm moves, and the wet edge dries before you reach it.

That is where the light and dark stripes come from.

A cleaner sets the nozzle height with its wheels. The two jets cross the same patch at speed, so the whole width gets the same treatment.

Kärcher says its twin-nozzle design cuts cleaning time by 50% or more, and that matches the simple math of covering 15 inches instead of a 2 inch jet.

The fixed height also protects the surface. A wand tipped too close can etch concrete or fuzz a wood deck.

The cleaner's wheels and skirt stop that as long as you keep it moving.

How much faster and cleaner is the job in practice?

The gain is large on open flat areas and small on tight or vertical ones. A 15 inch cleaner covers about 15 inches of width per pass, so a 20 foot wide driveway needs roughly 16 passes instead of dozens of wand sweeps.

On steps, curbs, fences and garage doors, the wand still does the work, because the cleaner needs a flat run to roll on.

Water use drops too. The spray stays under the shroud and is reused against the surface rather than thrown into the air.

That matters on a metered supply or a small tank.

The finish is the second gain. Even passes mean an even color across the slab.

If you have ever cleaned half a driveway and watched the wand marks dry in the sun, the fixed-height shroud is the fix.

What should you check before you buy one?

Match the cleaner to your washer first. Most models need about 2,000 PSI and 2 GPM or more, and the cleaner's maximum pressure should sit at or above your washer's rating so neither runs past its limit.

Check the connection. Most cleaners use a 1/4 inch quick connect, but some wide models use a 3/8 inch fitting, so confirm yours matches or plan on an adapter.

Check the width against your space. A 20 inch cleaner is quick on big open slabs but clumsy between planters and along narrow walks.

A 15 inch model fits tighter patios and still beats a wand.

Look at the wheels and handles. Two handles and four casters let you push the unit with both hands and keep your back straighter.

A single handle on a heavy cleaner tires your wrist fast.

Cleaners suit concrete, brick, tile and some wood. They are poor on gravel, loose stone, slopes and anything delicate.

For a wider look at models and sizes, see our roundup of the best pressure washer surface cleaners.

Which cleaner fits a big driveway?

The MEKOH 20-Inch Surface Cleaner is the widest of the three and the best fit for large open slabs. Its twin spinning nozzles work at up to 4,500 PSI and 4 GPM, and two angle-adjustable handles plus four casters keep it gliding.

The 20 inch width means fewer passes on a long drive. The sealed bearing is there to stop leaks and blockages, and the PP body with brass parts handles cold water, hot water and soap water.

MEKOH says it suits washers from 2,000 PSI and 2 GPM upward. Its size is also its limit: it is the clumsiest of the three in tight corners.

Which cleaner suits a tighter patio?

The Westinghouse 16.5-Inch Surface Cleaner is the middle size and the best fit for patios and mixed surfaces. It is stainless steel and rated to 4,400 PSI, with a 1/4 inch quick connect for most gas and electric washers.

The smaller deck makes it easier to steer around furniture and between beds. Westinghouse backs it with a 180-day limited warranty.

It cleans flat surfaces both flat and vertical, so a low wall or siding is within reach. The stainless body adds weight compared with plastic models, which you notice lifting it out of a trunk.

Which cleaner is best for a first attachment?

The Kärcher 15-Inch Surface Cleaner is the narrowest and the best fit for small driveways and first-time buyers. It uses two high-RPM nozzles and a splash-free skirt, and it includes two extension wands.

The metal shroud and skirt keep spray and debris off walls and plants, which helps in a cramped yard. Three wheels let it glide, and the fixed nozzle height is what kills the streaks.

Kärcher rates it for washers from 2,600 to 4,000 PSI. The 15 inch path means more passes on a long drive than the MEKOH.

When is a surface cleaner not worth the money?

Skip the attachment when your cleaning is mostly vertical, tight or loose. A cleaner needs a flat hard run of a few feet to be useful.

One stained square of patio or a single oil spot on a garage floor is faster with the wand and a turbo nozzle. The setup and hose handling cost more than the cleaning.

Gravel, loose stone and steep slopes are also poor fits. The wheels sink or drag, and the spray throws stones.

A wand with a wide fan tip gives you more control there.

A weak washer is the third case. A small electric unit under 2,000 PSI may not spin a wide cleaner's nozzles fast enough to clean well.

Check your washer's pressure and flow before you buy.

Soft wood, old paint, loose render and anything you would not wand at close range are safer left to a gentle nozzle. For a sense of what a washer plus a cleaner costs together, our guide to how much a pressure washer costs puts the budget in context.

How do you get a streak-free result with one?

Keep the cleaner moving and let the wheels set the height. The usual cause of stripes is stopping in one spot or pushing too fast over a dirty patch.

Go over each strip at a steady walking pace and overlap the last pass by a couple of inches. On a first clean of a dirty slab, a second slower pass does more than pressing harder.

Check the nozzles before you start. A clogged or worn tip makes one side spray weaker and leaves a line.

Clear debris and replace tips as the maker directs.

Keep the hose behind you so it does not drag the cleaner off line. If the bar stops spinning, stop and check pressure and flow before carrying on.

Our guide to how to use a pressure washer surface cleaner walks through the passes in order.

Does a surface cleaner save water and detergent?

Yes, a cleaner usually uses less water per square foot than a wand, because the spray stays under the shroud and covers the area in fewer passes. The two jets work the same patch at speed instead of splashing most of the water away.

Detergent use drops for the same reason. With a wand you often soap a whole area and rinse it twice.

A cleaner loosens the dirt in one pass, so you can spot-treat stains and let the jets do the rest.

The water saving matters most on a metered supply or where runoff is a concern. Fewer passes also mean less runoff overall.

That is a real benefit on a driveway that drains to a street or garden.

Don't expect a cleaner to replace detergent on greasy or mossy surfaces. Pre-treat those spots, give them a few minutes, then run the cleaner over them at a slower pace.

What about storage and upkeep?

Store the cleaner dry and indoors, and drain the hose and washer before cold weather. The bearings and brass parts in a cleaner do not like sitting wet through a freeze.

Rinse the shroud and nozzles after each use so grit does not clog the tips. Check the wheels and the spinning bar now and then, and clear any wrapped grass or string.

Before winter, run the whole setup dry and bring the cleaner inside. Our guide to how to winterize a pressure washer covers the pump and hose steps that protect the attachment too.

So, are pressure washer surface cleaners worth it for you?

They are worth it if you have flat concrete, a patio or a driveway and you clean it more than once or twice a year. The attachment pays back in time, water and an even finish, and the fixed height is what keeps the stripes away.

Skip it if your jobs are small, vertical, sloped or loose. A wand and the right nozzle tip handle those better and cost less.

Also skip it if your washer sits under about 2,000 PSI and 2 GPM, because the cleaner will not spin well.

For most homes with a driveway, the widest model your budget and washer allow is the smart buy. The MEKOH 20-Inch is the best pick for big open slabs, the Westinghouse 16.5-Inch for patios, and the Kärcher 15-Inch for tighter yards.

Compare sizes in our surface cleaner roundup before you order.

Frequently asked questions

Do surface cleaners use more water than a wand?

No. A surface cleaner usually uses less water for the same area because the spray stays under the shroud and does the work in fewer passes.

The two spinning nozzles also put the water where it counts instead of splashing it off the edge.

Will a surface cleaner work on a sloped or gravel driveway?

It works best on flat hard surfaces. On a slope the wheels and shroud can lift or drag, and on gravel or loose stone the spray throws material around.

Sweep gravel first and use the cleaner on solid concrete, brick, tile or wood only.

Can a surface cleaner damage concrete or decking?

It can if the pressure is too high for the surface. Keep the nozzle at the fixed height the wheels set, use a lower pressure setting on wood and soft stone, and keep the cleaner moving.

Test a small hidden patch first and let it dry before you do the whole area.

What pressure washer do I need for a surface cleaner?

Most cleaners need about 2,000 PSI and 2 GPM or more to spin the nozzles properly. Check the cleaner's rated maximum against your washer so neither is working past its limit.

A small electric washer under those figures may not drive a wide cleaner well.