whole house

Planning a 2nd floor bathroom remodel and will be taking the opportunity to replace the 65 year old copper with PEX-A in the whole house while I'm at it. Decided on trunk & branch (vs home-run) and wanted to solicit some advice/opinions on sizing. Attached is the current layout. 3/4" copper...

Hi everyone, I'm actually posted here for a well pump right now as well so our cup runneth over as they say. So theres a 20+ year old 10 seer york unit that the compressor failed- At least we are fairly certain of that. Originally I was going to come on here and troubleshoot but at this point...