Nu-Calgon 4171-75 Evap Foam No Rinse Evaporator Coil Cleaner, 18 oz. (4-(Pack))

This product really works and the seller is fantastic!We used this to clean the fins on the a frame unit above our furnace. There is no way to rinse this and it’s directly above all the wiring. After watching a youtube video I decided on this brand and product. I can’t speak for other brands but this one really works. My wife and I used a metal dog brush to gently remove large chunks of dust and this was able to clean all the way through! Highly recommended!Easy to use!Really works!

appears to work as advertised...this is my second purchase. I use this bout once a year to clean the coils.

Cleans the dirt and dust very well.

Cleaned 4 AC unit outside coils and all got pretty clean. I did wash coils after application. Was more of a stream than a foam but sprayed well and it really removed the dirt effectively.

Product works great.Shake first.Cleans and foams great. Have used on a 14 Peterbilt 587 rear evap core, and rv evap.Now if you had a system like me with no cabin air filter... It's gonna be super dirty. I had to clean and scrape and use razers to pick the hair and debris out of my 14 Pete. And unfortunately there is no way to add a cabin filter. But once I got the dead cat skin off my evaporator, this stuff cleaned the rest of it deeply.

Good price for 4

It is very cost effective, easy to use and works well.

Spray this on the top half of your mini-split (inside unit). Spray a LOT on that top half. Then use Spray Nine, aimed at the tray at the bottom of the unit. This will help prevent mold in your units when running on AC.