RectorSeal AC Leak Freeze Magic Frost with 1/4" Adapter 45322 Leak Sealant, Non- Polymer Formula & Safe for Refrigeration Systems, Easy Application, HVAC, 0.5 oz.

3 months and holding good.

WOW just WOW what a great product our coil had a leak called the AC ppl out they confirmed the leak and did add 5 pounds but told me the coil had to be replaced it's a 5 ton Goodman only 3 years old so still under warranty except labor and coolant he proceeds to quote me 1500 dollars and I said there is the door goodbye so I was desperate it's hot in Texas so my ADHD brain went hyper focused on how to fix it myself and found this product it's awesome I was able to get most of it in because unfortunately I didn't know a caulking gun isn't an option so I tried pushing it in by hand but it wasn't moving so I unscrewed it quite a few times then finally went got one of my caulking guns but it has a plastic body so it flexed too much then grabbed one of the all metal ones and like butter it went in so even with only 3/4 of it actually making it in our ac is colder than the day it was put in

The stop leak did the trick. It wasn't an issue for my system, but the plunger applicator isn't efficient for dispensing the full volume of packaged sealant. Some sealant is left in the hose attachment. That may be a concern for larger AC systems.

I will update the review if anything changes but so far this stuff has worked for me. I have a system that is almost 15 years old, r-22. Over the last few years I have noticed the cooling performance go down year after year. The coils and filters are clean so I checked pressure and realized I was a few pounds low. I ran this sealant through first and then topped up the system. I now have ice cold air. Obviously I need more time to verify the longevity of the patch but preliminary results are looking good.

Stay away from this product if you have a R410a system! It is implied it works with any Freon, that may be true of the sealant material but not the tool. It was easy enough to attach but the crimp connection from the AC low side port to the hose simply isn’t up to the task at R410a pressures, though the instructions indicate it can be used in systems with suction pressures above 100 psi - which R410a does. The instructions do recommend using a caulking gun to help inject the contents in higher pressure systems. However, even without attempting to inject the contents, the low side pressure blew the connector out of the hose. I had been doing my own AC work for years and when I first inspected this hose connection, I suspected it wouldn’t hold. So I was ready to quickly take it off the port and so lost a negligible amount of coolant.

It quickly sealed leaks and the application was straightforward. The blue color is a helpful indicator, and it’s been reliable so far.

I guess time will tell if it actually works, since 1/3 of the product leaked past the plunger when I was pushing it into my R22 system. Not sure if I got enough of it into my AC system. Wish I could get a replacement product for this one with a faulty plunger.Edit: I reached out to Rectorseal for a warranty replacement. They rejected it...told me to return it to Amazon for replacement (which is not possible unless you are in the 30 day return window. I am not). Not impressed with Rectorseal as a company.

This item is defective, the inlet side on the schrader valve is bent.