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What to replace R-22 with AB oil in compressor......walk in cooler
Butcher shop has a walk in cooler "bone" room....actually gut room....inside copper coil deteriorates from methane and ammonia gases of cow/pig guts IMO. (Cow & pig farts destroying the world BTW). Cooler full of barrels is emptied once a week.
12 year old coil has numerous leaks. Is currently R-22 system.
Compressor has AB oil. With change of TXV and new coil what gas could be used in this system for 40 degree operation. 6600 btu coil.....comp is RST55 C1 CAV-959 with 15 oz of AB oil.
Looking for less expensive gas as the new coil will start to leak within 10 years.