RectorSeal AC Leak Freeze Pro Nano with Magic Frost 45317 Leak Sealant, Easy Application, HVAC, 1.5 oz.

I’ve used these products for years and have never encountered a mild leak it failed to permanently repair. The delivery system has evolved since I first started using these products. I was the GM of a restaurant for many years, and several older pieces of refrigeration equipment developed leaks over time (typically small and difficult to locate). This line of products never failed to fix these issues and verifiably ran for years without issue. Given this experience, I began to apply this product in central home HVAC and automotive HVAC systems. This particular purchase fixed a medium leak in a 3 ton split system, and the few drops left over fixed a small automotive leak that had been plaguing me for years. Now, the price has gone up about 3 fold since I first started using this product but still yet, my advice would be: If you can’t hear, see, or find the leak give this product a go. This newer delivery system is definitely easier and more efficient than the previous caulk-gun method (which is still sold). The build quality is very high with appropriately placed check valves and low loss fittings (I wish my manifold hoses were this nice).

My home ac was leaking some where, I had it filled it leaked out 2 days later. I bought this and had the ac tech come pump it in and refill my ac and it’s been working great this summer and it been some very hot days. Hope it works for the next person as good.

Super easy to apply if you have some basic diy HVAC experience. For now seems like product worked.. haven't had any issues since.

With this product you stand a 50 % chance that it may work. It all depends on your leak. In my case it did not work. But in many cases it tends to work fine and saves you from costly repairs. Keep in mind though that this is typically a temporary fix when it does work.

The Product is good, but the sellers shorted me one, said 12 was shipped but only 11 in the box. don't see any way to resolve this issue.

HVAC Professional here: Managed to fix a small leak on an evap coil. 6 months after, no complain. Beware not all the leaks can be fixed with this, mostly depends on size of the leak.

It's been over a year with the Nano juice and the 9 year hybrid water heater is still pump out hot water. I had a problem with a slow but persistent leak around the Electronic Expansion Valve. I installed it per directions. The hot diode refrigerant detector finally stopped beeping like a evil Christmas toy. Getting another 16 months for $60 feels like a good deal.

injected last year, still need to refill this year.