What's a Whirl-A-Way or Flat Surface Cleaner? It’s a pressure washer cleaning accessory that's available either as a small unit that can be mounted on the end of a spray gun or extension pole to clean horizontal or vertical flat surfaces.
These flat surface cleaners are commonly marketed as “Whirl-A-Ways”. You can clean driveways, walls, vinyl siding, asphalt, concrete, pools, tennis courts, ramps, etc. very quickly. (The smaller Whirl-a-Way units clean vertical surfaces.)
In fact, Whirl-A-Ways clean even faster than regular spray nozzles or water brooms.
For example, cleaning the typical driveway of 400 sq. ft. will take 80 minutes using a spray nozzle, 30 minutes using a water broom and only 10 minutes using a Whirl-A-Way flat surface cleaner!
Inside the circular, plastic cover of the surface cleaner, you will find rotary cleaning arms that spin from the force of the pressurized water that is ejected out from the end of the arms. This rotary motion creates the fast scrubbing action that Whirl-A-Ways are famous for.
Remember that each flat surface cleaner works within certain ranges for PSI, GPM, etc., so read the specifications carefully to make sure it will work with your specific pressure washer engine and pump output.