Rectorseal 45316 AC Freeze PRO Nano Leak Sealer, 1.5 oz, Blue

To all the AC techs that always advise against sealers here is a case for you and I also say, what do they have to lose?I had a friend that had an AC unit with a leak bad enough where it would pretty much leak out its contents within a month. Against my recommendations we filled it back up and within a little more than a week it was out again. I figured I'd suggest trying a leak sealer as replacing the unit was not an option financially for her so what did she have to lose. We added this sealant and I warned her about the possible consequences. We added more refrigerant and this time it slowed the leak down back to a month. So I added "leak saver " brand next and between the 2 of them there have been no more issues and knock on wood the AC unit is still going strong in Las Vegas heat with no compressor issues etc.And yes, we looked to locate leak initially. Her condenser had many small leaks at the bottom coil due to water corrosion and who knows if she had any in her evap also. So repairs were not even worth attempting. Whether or not aluminum coils matter to the leak sealers I do not know but this has aluminum.

Worked like a charm for me. I had a very slow leak and it sealed it perfectly

It didn’t stop a minor leak(.5oz over 4 days)

This product did not work for me. Product came in a good package. Easy to use, but when I actually fixed the leak there was no product in the line or around the leak... did I use it wrong? Or was there not enough for my 4lb mini split unit?

It was packed good, and the product itself was in a container that was indistrucktable, and it been a good two to three months and system is leak free. And price was great.