Jim
I don't think I have ever been on the outside and heard a heat pump go into or out of a defrost cycle. What is the ugly screeching sound that Eric is talking about?

Does the compressor shut down while the reversing valve is changing modes?

If the compressor shuts down, is there a time delay built in before it starts up again?

Eric did not say what the inside house temperature was. If I was to assume 72 or 73 degrees, would an 85 degree register temperature be normal in that area?

Thanks

Jeff Euriech
Peoria Arizona