Armstrong Air Conditioning Inc. (Lennox)
*Concept 12* Heat Pump
Model Number: SHP12B30A-1 A
Installed: 06/10/1996

I'll be brief.
I lost refrigerant through a pinhole leak in the "A" coil (evaporator). In addition to the refrigerant, I captured 8.1oz. of oil that came out of the leak. I repaired the leak. (properly brazed. No RTV silicone) A HVAC professional was called to recharge the system. He was told of the loss of oil but did nothing but add R-22 to the system.
The system originally shipped with 38oz. of oil in the compressor. It now has just under 30oz. and is running. 8.1oz is over one fourth of the system total. The HVAC guy didn't seem to think it to be a big deal. I beg to differ. I just don't think it's a good idea to continue to run this compressor with over a quarter of the original oil charge gone. What say you? Opinions/suggestions welcome. The "professional" will be here tomorrow (Wednesday 05/28/2014) to replace a discharge over-temp thermostat as well as a delay on break timer. What can I say to him to get him to discharge the system and add the missing oil.

John F.

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