Leak Saver Direct Inject AC Leak Sealer Small System | AC Stop Leak for Most HVAC Systems Up to 1 Ton | Works with All Systems & AC Refrigerants | Made in the USA

It did something because I went past the time I would have had to recharge my car AC with more Walmart refrigerant. I had a small leak that progressed to where I had to recharge every two months. It's been more than two months since I used this product and the AC is still blowing cold (would have been warm by this time.) If and when I recharge, I'll update the review but so far so good. UPDATE: I sealed it on 1/26/26 and recharged again on 6/14/26 because it leaked out. Curiously, it only leaks out when my car sits for a few days. Came back from a five day trip and no AC. Refilled with Walmart r134a. We'll see how long it lasts. Next time, I'm going to put in some UV dye.

I used this Leak Sealer Small System injector on a LG dehumidifier running R410A that had a leak in the evaporator. It has been running for approximately 10 days now and is holding charge. It would exhibit low charge in a week or less before using Leak Saver. Very easy to use. Much more reasonably priced than other leak sealers. So far so good!

Used this stuff on 3 different mini splits and it worked great on each. One was nearly 3 years ago, one 2 years ago, and just added it to a leaking system 2 hours ago which appears to be holding pressure with good temp numbers.

I have a small and slow coolant leak in our wine frig. The system is small (1.8 oz of 134a) and I hoped that this would solve the problem. I recharged the system and used the product, but the leak persisted and the frig lost temperature again over the same period of time (about 3 days). I bought and tried a second application and still no success. After investing about $100 for the injector and the two treatments, I really hoped this would be a cost-effective fix. Time to research some other products in hope to avoid replacing the frig.

Does the job for slow or minor leaks. I am not sure about major leaks. 1 of the 3 dried up in storage before I could've used it.

Auto ac leak sealer, easy use.

Great find; had a small leak in a DIY mini-split system. Goodbye leak.

Had a leak in a Samsung fridge that slowly leaked its refrigerant over the course of a month warming up the freezer then then refrigerator section. Bought this product to hopefully seal the leak since it took longer than 7 days to Unfortunately, product worked but just delayed or slowed the leak. Fridge is warming back up about 4 months after first injection of the product. Beware that their satisfaction guarantee per their official website only applies to "service professionals" and only 3 months from the injection date!

My window AC has a micro leak... I can say it is very minimal leak, it slowly loses pressure for about 3 months but still not totally empty and can still cool to a minimal level. From 65psi, it goes to about 30psi in ~2 months and about 20 psi in 3-6 months. It will not empty out totally and will just stay at about 20psi. So, let us see how this works out for me. After 1 month i will check the pressure again, I know i will lose a little pressure every time I measured with my manifold and will consider this too. UPDATE: After about 20days of usage, the pressure dropped again at 20psi. meaning it was not able to hold the pressure and seal the leak. anyway i enjoyed using it and hope it can work for others

Le produit fonctionne très bien presque toujours…

Worked great on my 2005 Malibu ...the Mazda 5 ..not so much ... lol in / out on the ground ....

It got to me almost empty. It was leaking inside the package. Couldn’t use it.

I was initially optimistic as the product took longer to lose charge but eventually it did so I cannot say this product works as a permanent solution. At this point I would recommend putting your money into replacing fridge.