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Thepprof · 03-04-13, 08:04 AM

I'm totally new to HVAC. I've installed 2 minisplits (permitted, inspected and passed by the local inspectors) and maintained 7 personally owned units for about 7 years now. I took the local A/C courses after being screwed by two contractors in succession. This is the first time I've ran into a heating problem with a pure HVAC system. Found a blown fuse and now its up and running fine.. BUT ... How do I know that it is working efficiently. I can't even find a guideline for ball park opertating conditions. Yesterday here in VA. it was about 50 degrees outside. I had 150psi on the high side and 50 psi on the low side at the compressor. The temp on those lines were 126 deg / 58 deg F. inside differential was about 24 degrees. Are there some old fashioned ball park guidelines in this regard??? thanks

03-04-13, 08:04 AM	#1
Thepprof Lurking Renovator Join Date: Jun 2012 Location: Virginia Posts: 28 Thanks: 0 Thanked 4 Times in 3 Posts	hvac & heating I'm totally new to HVAC. I've installed 2 minisplits (permitted, inspected and passed by the local inspectors) and maintained 7 personally owned units for about 7 years now. I took the local A/C courses after being screwed by two contractors in succession. This is the first time I've ran into a heating problem with a pure HVAC system. Found a blown fuse and now its up and running fine.. BUT ... How do I know that it is working efficiently. I can't even find a guideline for ball park opertating conditions. Yesterday here in VA. it was about 50 degrees outside. I had 150psi on the high side and 50 psi on the low side at the compressor. The temp on those lines were 126 deg / 58 deg F. inside differential was about 24 degrees. Are there some old fashioned ball park guidelines in this regard??? thanks