Quote:
Originally Posted by stevehull
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).
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That sounds like formicary corrosion. It is a big problem with R410 systems. I've never heard of it on an R22 system. About the time manufacturers switched to higher pressure R410 they also started using thinner wall tubing to increase EER (and profit margin). It didn't work. The HVAC industry is still in plausible denial.
You are right that goop in the coil is not a solution. I suggest finding another coil - if that is indeed the problem. It might be a slow leak around the glass seal on the compressor. I've seen a few of these.