[stevehull]

I just got a functioning closed loop GT heat pump for $100. But here's the catch . . .

Leaking gas from somewhere and the HVAC guys think it is in the evaporator coil. Apparently this particular unit has tiny "bubbles" in the coil that are attacked from the inside (that is what I was told). They suggested some kind of liquid that can be put into the system that "plugs" tiny pinhole leaks. Not a great solution (reminds me of using that crud in car radiators . . . ).

The unit is a 2.5 ton, single stage Florida counterflow unit. It was set up for closed loop, so I got the circulation pump as well. A beautiful coaxial coil inside and the scroll compressor works great. I saw it working.

The owner got tired of putting in a couple lbs of R22 every six months and the unit is about 15 years old.

Ideas on plugging leaks? The alternative is to go with a generic coil as the specific OEM replacement from Florida is almost $1000.

TIA.

Steve