Leak Saver Direct Inject Ultimate 3-in-1 | AC Refrigerant Leak Sealer | with UV Dye & Moisture Remover | for Most HVAC Systems Up to 5 Tons - Professional AC Leak Sealer - AC Stop Leak

That was the price I was quoted last year for a new AC system after an HVAC tech determined I had a crack in my evaporator coil in my existing 10 year old system that was letting the coolant slowly leak out. Said it couldn't be repaired and that I should just drop $15,000 and buy a whole new system. Instead I found this fix on Amazon and gave it shot. After using it with the seperate injector gun I bought some replacement refrigerant online plus a manifold and topped off my system myself after watching a youtube video. Since that moment 11 months ago my HVAC system has worked perfectly even through the brutal summer.

Works as advertised. Not sure if it will require another treatment down the road. That’s why I bought the pack.

My home's A/C had a leak that I eventually found in the evaporator. Over a two day period the system would lose about 4 pounds of freon. I added the leak saver then recharged the system. This was 2 weeks ago and the leak appears to be sealed. I have an electronic freon detector that originally detected the leak location. After adding leak seal the detector did not detect a leak even on the highest sensitivity setting.

Quick update - this seller did a great job from a customer service perspective. They made the situation right. It is great to know that there are still products and manufacturers that guarantee your satisfaction with their products! What a bummer! I've been a big fan of Leak Saver products until this one. I've used the Leak Savor Direct Inject UV Dye and Leak Sealer on 4 heat pumps over the past 5 years had had 50/50 mixed results. Now that I've used this product on another older heat pump at a second home, I have to say that I'm no longer sold this stuff works. I also have to say that I have "suffered" silently as I have had several issues with the product including a multipack that had broken "pipes" of the leak sealant in the bag to now this "Ultimate 3-in-1" actually making my leak much worse. The problem with the multipacks are that the contents are hidden until you open them. Unless you are going to do that before the return period you don't know if you have a damaged and/or defective product. In the latter case, this Ultimate formulation took me from having a leak that lasted a month before dropping out the pressure switch to a leak that was significantly bad enough that it only took 3 days for that to happen. I cannot tell if it gummed up the TXV to make it worse or what but suffice to say my hail mary didn't work and I'm now having to replace a heat pump.

This product was easy to use. I also ordered the hose used to inject the Leak Saver and it was simple to use which made it easy for me. My system has/had a very small leak. It usually takes two summers to need refrigerant. I won’t know until 2028 if the small leak was repaired by Leak Saver. I have faith that it has already worked though because the unit seems to be working so much better. It’s cooler in the house and it’s been very very hot and humid here lately.

UPDATE: this week the fridge stopped working again, loss of freon. So this product did not fix the very slow leak as I was hoping it would, so have to give it one star now. For the price, this is not a good value. The expensive brass fittings on each end are not reusable, and obviously jack the price up. The leak I’m trying to fix is in a fridge, and is very slow (2 to 3 months), and I’d expect this product would work, yet it doesn’t. And have not been able to find the actual leak using a black light to reveal the UV dye… frustrating!! Original, initial review: I just put this in today for my Samsung side by side. I did get the leakstop into the fridge today, I’ll come back in a few weeks to report on efficacy. 1) package came with no instructions whatsoever… just the stop leak tube in a sealed package, in a branded slightly larger package… I went online for the instructions. 2) Installing was challenging. There’s a valve at both ends, and neither activated. The input from the manifold has Schrader valve, but my hose/gauge does not have the fitting to activate it. 3) The valve on the other end would not activate when screwed into a bullet piercing valve. I had to unscrew the first Schrader valve completely, connecting the gauge, the contents ended up in the hose, so the hose was the intermediate step… I ended up not using the supplied fancy brass fittings on a mini hose, though not intentionally, simply the valves were not working for me. 4) at $46 I wonder how much was due to the nice knurled brass fittings? Is the compound available to refill the tube? Is there a recycling program? 5) the fluid tube is very stiff… this became a problem as I had installed the bullet valve pointing straight up last week when I was doing the initial refill with r134a…. So there was not enough clearance between valve and chassis, making attaching challenging due to the stiffness… Wondering what I can do with these nice fittings, LOL…

It was easy to put into HVAC on the low pressure side.

Installation was easy - the test will be seeing if this item works. I usually top my system off at the beginning of summer. We will see what is necessary at the end od air conditioning season and next year.

This dealer is very easy to use and hook up. You do not need any special tools.

Did the job, been 4 months and the AC is still working great after it was added with the freon. Normally the freon would leak out after just a few weeks. This is at our condo in Punta Cana where it’s 26 to 34 Celsius during our winter months there.

Facile à utiliser

Easy to use , straight forward application

I would suggest that if you’re considering paying this much for a product, you have a more serious issue and need to replace some parts. Did not seal the leak in my vehicle, wound up finding and repairing the leaking part so this was a waste of time and money.