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

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!

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.

Proven and safe for long term leaks one cannot find with dyes and testers. Install and leave in system for future leak prevention. I haven't tried other brands since this one works for me in appliances after isolating major leaks (i.e. post evap replacements) :)

Had a leak in a Samsung refrigerator that I couldn't find. Decided to try this product to save the fridge. Injecting it into a tap like with the separate C02 cartridge was pretty straight forward (make sure to twist the co2 cartridge all the way in to release the gas). Product worked at fixing the leak as my unit was able to hold proper charge without leaking for several weeks. However, there are drawbacks to using this product. It became noticeable to me after applying the product that the compressor for the unit was running a lot more frequently. The refrigerator was getting cold but simultaneously struggling to maintain freezing temperatures in the freezer. With settings for the fridge at the upper ranges, I was able to get the freezer to maintain temperatures in the mid teens, but when the fridge was set in the lower ranges the freezer would struggle to keep up and would get into the upper 20s/low 30s and my ice cubes and frozen items would begin to thaw. My guess is that this product ended up gumming up some of the distal ends of the cooling lines increasing peripheral resistance and this decreasing the efficiency of the unit overall. This would explain why the compressor was running a lot more than it used to. After a while I decided that the refrigerator was best suited in its new state as a beer/drink only garage fridge but I still ended up junking it because it seemed like a waste of energy and space waiting for the compressor to eventually crap out. So all in all yes this product works but be cautioned that the fridge you end up saving my end up being more of a zombie fridge than the one you used to have and at best it's just delaying the inevitable.

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.

Auto ac leak sealer, easy use.

Seems to have worked my mini split in my mancave needed 410A freon every couple of weeks. Now it seems to be holding . Hopefully this is the stuff I needed because small lesk in system. Only time will tell🙏🏻✌🏻

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…

achat pour un autre

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

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