I know "webea/c" sounds like I don't know and although I will not say I know everything I think after 20 years in the biz and countless schools and seminars I've picked up something I can call knowledge. Besides my tech school instructor made us read the Modern Air Conditioning and Refrigeration book cover to cover. (I've forgotten a lot of the theory though.) So I'm looking for you guys to back me up on something so I can prove a point.
The Project Manager of our company is trying to tell me that a crankcase heater keeps the oil from "gelling" up during cold weather and that in Florida we do not need them.
I am trying to convince him that it is to keep the refrigerant from migrating to the compressor and mixing with the oil during the off cycle, thus preventing the refrigerant from carrying the oil away from the compressor during starts.
Please post some threads so I may print this and set him straight. I wonder if I should follow him on some installs to make sure he's not disconnecting them.
By the way, In Florida we run commercial A/C systems all year because even on a 40deg day the buildings here are in the high seventies by 11:00am.