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🧊 Stop leaks before they stop you — the pro’s secret weapon!
Leak Saver Direct Inject AC Leak Sealer is a professional-grade HVAC additive designed to permanently seal small refrigerant leaks within 7 days. Compatible with virtually all AC systems and refrigerants, it offers a mess-free, direct injection method that’s safe for all system components. Trusted by HVAC pros with over 4 million units sold, this USA-made formula ensures reliable, long-lasting leak protection and preventative maintenance for systems up to 1 ton.











| ASIN | B086W5B539 |
| Best Sellers Rank | #1,258 in Automotive ( See Top 100 in Automotive ) #3 in Air Conditioning Line Repair Tools |
| Brand | Leak Saver |
| Customer Reviews | 4.0 4.0 out of 5 stars (495) |
| Date First Available | December 20, 2019 |
| Item Weight | 2.39 ounces |
| Item model number | LS-SS |
| Manufacturer | Leak Saver |
| Manufacturer Part Number | LS-SS |
| Product Dimensions | 0.7 x 4.8 x 6.7 inches |
P**1
FIX YOUR AC UNIT SMALL LEAK
if you have a small ac leak you can slow it down or fix it until you can get something better. you will need a hose to add freon gas to whatever you are working on , R-22,R-410a, R-134a or whatever does not matter, you can mix freon, just add a little at a time the gases expand at different rates, to much no good. get the hose, get the freon gas, you may need an ADAPTOR to screw this sealer injection shot onto the input port on the ac unit you are attempting to seal, first you should try putting a little freon into the system if you hear it just blow right out ,you should try to close the hole ,solder or band clamp with rubber this is only effective on smaller than a pinhole ,works good, if I have a unit that leaks down after 6 months it will pretty much fix it, I keep 2 in my ac repair box always, as always I recommend watching a DYI video before you use this , Enjoy
J**K
Easiest way to save both dollars and the environment by stopping refrigerant leaks
Super easy to use and well-packaged.
A**R
No desperdicien su dinero
En mi opinión creo que es más propaganda que lo que en realidad hace, yo lo use y no me solucionó el problema tal vez a alguien más si,pero en mi caso yo le doy una estrella
A**E
It works! Excellent product.
My Samsung family hub refrigerator stopped freezing and the fridge stopped cooling after only 3 years . Finally gave in and called a repair service and they said I had a leak after checking Freon pressure. Estimated over $1,000 to repair. The tap was already installed so decided to try this product figured nothing to lose. Long story short my refrigerator has been running better than new for over a month. How do I know it works? Because I recharged the system myself first it only worked for 5 days before it started getting warm again. As educational purposes only there’s a few YouTube videos that explain how to recharge a refrigerator so at your own risk or have a trained technician do it for you. This absolutely a great product.
J**S
Game-Changer for AC Issues
I love this product! Instead of an expensive unit replacement for a refrigerant leak, Leak Stop saved the day. Even after a week of scorching 90-degree weather, my AC is still working perfectly. Applying it was a breeze, especially with the convenient CO2 applicator. Highly recommend for saving money and hassle-free maintenance!
H**R
It did something.
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.
S**E
Total waste of time and money in my case.
Update : After posting my review the seller reach out and offered a full refund. They did not ask me to change my review, but I think it’s only fair that I give them credit since they were not obligated to refund any of my purchase price. The only thing they asked was that I give them another chance in the future, which I may do. Product didn’t work in my case, I followed the mfg. instructions but this did not fix the leak in my mini-split A/C system. Not sure if it’s just this specific product or all product like this one in general, but it was a total waste of time and money. Be aware, there are no refunds on consumable products, so you are going to have to accept the risk if you decide to use this product.
M**N
So far, so good
I've used various sizes of this product and had success in both home and auto a/c units. The house size was installed by a professional four years ago and has held great. At the time, I was charged $110 for this in addition to a service call and a top off of freon. I was unaware this could be a product on Amazon. Later I found it for much, much cheaper....well worth the try as a dyi project. Just be sure to use proper connector and port. After learning about the product, had an issue in an F250. Compressor was somewhat new but it leaked. Not sure exactly where but it seemed to be a slow leak, probably an o-ring. Installed an auto version and never had a problem after. Recently had the same issue on a Vintage Air unit installed on a C10. So far, so good.
R**Y
Time will tell if it works or not... updated not able to hold the pressure after 20 days
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
A**E
Bon produit
Le produit fonctionne très bien presque toujours…
A**R
Seals good
Fixed leak
J**N
Brocken on arrival.
It got to me almost empty. It was leaking inside the package. Couldn’t use it.
H**O
not work
not work for my car ,waste money,don't buy it
Trustpilot
2 days ago
5 days ago