Nu Calgon 4050-08 EasySeal Direct Inject (Packaging may vary)

I had a problem injecting the first tube. Lost all the product. For that I would give this 0 star. Seems the valve pin actuator on this is too recessed and doesn’t allow flow. So on a second tube I unscreened the valve core a few turns and it worked fine. I installed this a year ago into a 3.5 ton system that had about a 2-3 lb r22 leak per year. Each year it would need a refill. After installing this and refilling a year ago the system has been fine. No need to refill this year. This likely works best in a condenser or evaporator small tube leak or a small line leak. If you have a leak in the compressor or other major leak this will not work. Good so far after year 1. Will update next year.

My system is a 3 ton unit and is 16 years old. It started leaking Freon several years ago and I would top it off occasionally. The leak got much worse, to the point that all the Freon leaked out. So I figured I had nothing to lose so I tried the Easy Seal Ultimate by Nu Calgon. I first put some Freon in the system to get some pressure on the line set, then injected the Easy Seal Ultimate. Then I added Freon after 1 hour to get the pressure up to where it should be. 2 days later it lost Freon but not as much. Then another 3 days after that it still lost some Freon, but half as much. So it takes time to work but the product clearly works!!!! I will still replace this system but the easy seal ultimate has bought me some time. Another observation is that the AC air blowing out is colder than ever! Thank you Nu Calgon!!!

I used this product on my daughters central air conditioner system.. It was getting to where you had to recharge the system every 3 weeks to keep it cooling. I added the Nu Calgon Easy Seal about 2 months ago and the Air Conditioner is still working great. According to 2 different thermometers that we used to check the temperature coming out of the inside house registers, it seems to be about 2 degrees cooler then it ever has been. So far i think the stuff is great. It was very easy to inject into the system and other than just watching our reading and adding refrigerant until we achieved the degree of super heat that we wanted it did the rest. It was a no brainer on this one, it was either do or die because charging every 3 weeks was not going to get it. I definitely am a believer in this Nu Calgon 4050-08 EasySeal Direct Inject stop leak.

Stupid me... Should have invested in this product sooner. I've been topping off my R22 AC system for about 8 or more years now... I probably had to put in about 2 lbs or more at the start of every summer. I burned through an entire 30 lb drum which is super expensive now. I'm hoping that this will keep me from having to replace my system for a few more years. AC systems are not cheap. As soon as I charged my system and added the product, I had good cooling all summer long. The real test will be when I run it again next summer after sitting for 6 months or more - hopefully it will be ok.

I cannot recommend this. I had a small leak, topped off with 410a and injected this. My friend owns an HVAC firm and recommended this. It ran fine for 2 days and then the low pressure switch failed. I cannot confirm if it was from this or not.My system is 11 years old so I was ready to replace it if this product failed. That's the only reason I used it. Otherwise I would have looked for the leak.

I've been in the HVAC industry for 20+ years.... this stuff does work but it's not really a permanent solution. I used this in my own system after fixing a leak in my evap coil. I had a big leak that I fixed with a torch and silver solder but after leak testing I found multiple mico leaks. I throw this stuff in to get me by for a few months before I install a whole new system. It works great all the micro leaks were gone.

Used it per the instructions and was easy to Use but for some reason didn't fix my leak ?

Excelente