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How to clean the concrete under air conditioning unit?

Experienced Contributor

How to clean the concrete under air conditioning unit?

Hello BWM,


Can you please propose appropriate brush for cleaning the stubborn stain; The water tank and the airconditioner unit is near by and appreciate the proposed brush to clean hard to reach areas (corners) for removing the debris. Some bebris is expected under the air conditioning unit.







Bunnings Team Member
Bunnings Team Member

Re: concrete cleaning

Hi @nagumuthu,


I'd recommend spraying the area down with some 30 Seconds Outdoor Cleaner. Leave it to work for 30mins and then scrub the area with a stiff bristle brush. You can unscrew the handle and use the head by hand to get into those tight areas.


The other option would be a High Pressure Washer. Even the budget-friendly Karcher K2 will have this area looking amazing in no time at all.


Please let me know if you have any questions.




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