I am just curious as to what other people's thoughts are on using crankcase heaters with a pump down system. There has been some extensive debate on this topic at work.
We have several pump down systems which also utilize crankcase heaters in the compressors. Some mechanics have protested the idea of replacing failed crankcase heaters on the pump down systems, primarily the systems with compressors that require isolation and removal of the oil charge to do so. They justify this by saying that the compressors are indoors at 75F ambient and that because they pump down, they don't require crankcase heat. What are your opinions on this?