Using leak sealers on heat pump

It's been a while since reading the threads on Heat Pumps. I was on a lot when having problems with my Trane Xl system several years ago. $10,000 later we have a new one. Our first one was a GE and lasted 22 years, second unit 13 years but was costly trying to fix it. A coil in second unit was rusted and had small leaks. These developed from many draining and recharging working on outside unit. What I want to warn everyone about is using stop leak they said was for heat pumps. Did not work and finally locked up compressor and sump heater wires burned off bottom of compressor. Also techs had to throw out several sets of gauges that were contaminated with the stuff. New unit is about 3 years now and doing ok. Just think how much electricity I could have paid for on a standard system.

 

In this forum... we do not recommend any leak sealers for a sealed system leak.

 

I believe, I was a guinea pig on this. The tech that did it left the company soon afterwards. Today if I went on and had the A coil replaced and the problems solved in the outside unit this unit would most likely still be in use. However new unit is working very well now.

 

I have seen leak sealant cut the Delta Tee in half.
The system held refrigerant but it would not cool the house with a 10°delta tee.