Leak Saver Direct Inject UV - Refrigerant Leak Sealer with Added UV Dye to Detect Large Leaks - for AC, Refrigeration, and Automotive Systems Up to 5 Tons - Compatible with All Refrigerants

I put this in my old 28 year old system four years ago and it held until now. I had a leak again a few weeks ago so injected this product again (with Freon). Cool as a cucumber ever since and holding the charge. Curious if I can get 35+ years out of this system thanks to this product.

There's not much more I can say about a product that truly works. I replaced my outdoor compressor with R407C, a direct replacement for old R22 system. The coil was in the attic and almost impossible to reach comfortably. It is 25 + years old. This year, I was losing pressure, so I gave this a try. BOOM ! leak stopped immediately. I added more gas and at 90 degrees out, I'm pushing 68 indoors.Contrary to HVAC guys, this product works and at $37 a squirt, any other conversation is used car talk !And so simple to do, I bought 2 more for other systems I have. TRY THIS FIRST, SAVE THE BS

It worked just as advertised

After reading reviews I thought I’d give it a try. HVAC guys said system was shot. Not bad for 26 years of use though. Followed directions and left system run for over an hour after injection and refilling. Air coming out of vents read 58 degrees. Later it read 65 degrees and next day was 72. Couldn’t find leak with uv light but didn’t have full access to everything. It was worth the try. It just didn’t work for me.

I tried this on two mini splits that had slow leaks before I found Nylog. The first seems okay.The second one must have had bad product. It was a 2 year old system that was a little low. I shot in this leak saver and it was very slow going in and made a farting sound. Much different than the first one I used. The gas was very slow going in. Unit ran for about a half hour and the compressor started making a loud banging sound every few minutes. The sound kept getting worse. By the next morning it was making a grinding sound and was working poorly. I know when you disconnect service hoses you will get some splash as found on the first unit with UV. The second unit that had the problem showed small bits of solid yellow under UV. Not splash. I disassembled the system and shined UV in the lines. I got NO UV indication in the lines. That means the Dye/ leak saver must have been solid upon install. If it was liquid it should have been distributed through the whole system after a few hours running.The unit is trashed and I had to buy a replacement so now I am out the 30 bucks spent on this product, 600 for a new unit and some expensive R410A. Plus labor and parts to fix the wall. I figure good luck getting anything back from leak saver and am not going to waste my time.STAY AWAY FROM THIS PRODUCT!!!!!

Worked perfectly. Saved me thousands.

I used it on my 14 year old R-22 heat-pump system that had a very small leak and needed to be charged (added some R-22 gas) every 2-3 years. HVAC guys make more money to charge me to add gas instead of going to the root of the problem. I decided to become DIYer. Got myself gauge manifold and small tank with R-22. Followed the instructions and injected it into the system + added about 2LB of R-22 (as it was low again) and ran it in AC mode. 1h later got my UV light out and started looking for the dye at the furnace first. Immediately I saw some dye at the vapor line (large pipe) where brazing was done on the pipe joint right next to the furnace. I wiped it off and let it be for about 30min. Came back to see if more dye came out but it did not. Used gas detector sniffer and it did not detect anything. Came back a week later and still no dye or gas detection at that poorly brazed joint and system still stayed fully charged. The bottom line is: It DID work with detection and SEALING the leak in my small leak case!!!

Have bought and used this product several times and about 50% of the time they will not inject into the system. I have used pliers to tighten them onto the valves as far as they can and they still fail to engage the system ports. Even went to the trouble of buying new adapters just for this purpose and still no joy. Some of them will work just fine, no additional tools needed and the perform very well. Just recommend the manufacturer take another look at the design.