NU-CALGON 4171-75 Evaporator Cleaner, Aerosol, 18 fl oz - 2 Pack

Product exceptional to use outside to clean the unit. I strongly suggest you wear gloves and use the product with caution. On a day with little wind, you should do it. In order to prevent your skin from getting sores. Use fine spray, rather than a hard stream in order not to damage the fins. I do this after about half an hour to 45 minutes. The cooling device has extended the life of my unit by years. If it cannot cool the return it will overheat and fail to operate. STOP, CLEAN IS A MUCH BETTER MEANS OF shutting down.

Magnolia Shea

| Jan 01, 2021

Taking your time will pay off! It is important to follow the instructions to get the best results from this product. You need one can to clean two outdoor air handling units (2 1/2 tons).

Lexie Archer

| Mar 13, 2021

We used this for cleaning two thru the wall ACs, one dehumidifier and an air conditioner with a split system. My device received excellent results after almost a can was used per device. As soon as I was done, I saw that the devices looked as good as new. 2 cans of this would probably be enough for an AC unit throughout the whole house that is dirty. I was very happy with how it turned out.

Amelia Kelly

| Aug 18, 2021

I was very satisfied with the performance of the product on my RV air conditioner.

Alison Guerrero

| Mar 30, 2021

We paid about half of what we are used to paying in this area. I found it to be exactly what I expected!.

Kyla Freeman

| Aug 08, 2021