ComStar 90-298 Coil Safe Professional Grade Neutral pH Evaporator and Condenser Coil Cleaner, 1 gal Container, Green

Good price here. Used to buy via ezybuy. Kinda troublesome. Now it's sold here. I usually do rinse with fresh water though after using this product. Dilute accordingly. Check the instructions.

This worked great with cleaning our heat pumps but it is a bit strong. It does dissipate after an hour or so. Would buy again.

Used this to clean my electronic air cleaner element's for my furnace and the filter for my orik air purifier I bought used years ago. I have never been able to get either clean, I have used dawn and hot water as well as even gave steam cleaning a shot but always had dirt stuck on my filters for my furnace ( these are aluminum so plz do not try to clean paper or any other filter media with this, it is not designed to work on anything else other then metal type filters ), my air purifier filter is also aluminum and when I got it the filter was stained with what I have to assume is tar from cigarettes. I have tried multiple cleaners and none have worked on it either. I put ( in a clean spray bottle ) 1/4 bottle of cleaner with 1/2 bottle of hot water in old windex bottle and sprayed the purifier filter, the junk stuck on there that didn't want to come off, just started running off like using a garden hose to spray mudd off your truck before washing. Side of bottle says to let sit for 5 min after spraying, I let it sit for maybe 2 to see how well it cleaned stuff and then used my shower head to spray the filters down with hot water. I have not seen the dirt run off these filters like this before. I even rinsed the dirt off to start with using the pressure spray on my shower head before spraying the cleaner and I still got double the amount of dirt to come off. When I rinsed the filters the 2nd time, the water rinsed off as much dirt as it did when I first rinsed the filters before spraying them! The air purifier filter, I had chunks coming off of this junk/ tar when I rinsed it. The odor, there is none! I'm serious, there is no odor! This stuff is about as much as the spray calgon I believe is the brand cleaner that claimed to be odorless, but wasn't. This is cheaper and is alot better since there is no fumes or odors!

Works Great. I am glad I ordered the liquid, not the foam because my mini split was so dirty after almost 7 years. I am to do few shots of this product waiting 15 min between and rinse with garden hose. The result is amazing. looks new now. I spend little less than the half because my mini split was need it. Next time, I will do it more often and will need less product. Thanks again

Works great