ComstarCoil Safe, External Neutral pH, Non-Toxic, Self-Rinsing Evaporator Coil Cleaner Compatible With Commercial & Residential AC & Refrigeration System Coils, Made In USA, 1 Gallon (90-298), Green

So far so good with those who say it is smelly well yes it’s a cleaner and you should be diluting it with water it says on the bottle 1 part solution up to 5 parts water. It has a windex smell. My coils were not filthy or gunky but it seems to have removed the odor that I was smelling. So in short it works and smells like a cleaner

I got this to help clean the evaporator coil on my de-humidifier that lives in the basement. The thing runs almost non-stop and has been running for 3 years.Per the instructions you can dilute this up to 4 to 1 with water depending on your level of dirt. As my coil was not filthy I went 4 to 1 and sprayed it on with a re-fillable squirt bottle. It seemed to work very well, though I did help it along with a scrub from a very soft nylon brush. It did have a mild smell to it that seemed to be to be a caustic. It was not overwhelming at all, though it might be at full strength.After a good rinse with pure water my coil came out like new. This will be my go to for refrigerators, vehicle condensers, etc. Diluted down a gallon will go a long way making this a great value.

Works as described, cleaned a 20 year old condenser just fine.

My friend is our AC tech, he recommended this product for the outside unit and it really works great, pleasant scent and easy to use.

Great product works well. Just as described in the description

EXCELENTE

This certainly cleans but as others have said I will never clean an ac inside again. It took 3 days to air out the room and I’m still a little worried about the fumes.

The cleaner did a great job cleaning the coils of my A/C units. I sprayed it on and waited about 15 minutes and then pressured washed with a hose> Dirt just came off and unit efficiency works better. Side note, I had some liquid left over so I mixed in a spray bottle and sprayed on my ATV engines and underneath. This product really did a good job of removing oil and dirt. Will definitley buy again.