Why do so many techs say you must flush every coil after a burn out?

I've fixed several units without flushing and they ran fine for years. What's the real risk if you just replace the filter drier?

2 comments

2 Comments

morgan.daniel20h ago

But have you checked the compressor oil for acid after skipping the flush? I mean, idk, maybe it's just me but that's where I'd worry about long-term damage.

baker.oliver16h ago

Used to skip flushes without a second thought. Thought it was saving time and money. Then had a compressor lock up last year. Tore it down and found all the seals eaten away. Oil analysis came back with crazy high acid numbers. Now I test the oil every single time, flush or not. Your point about long-term damage is exactly right.