My wife and I just closed on a house last Friday. We paid a home inspector to inspect the house before we bought it. He did not turn on the heat pumps and listed the reason as it was too hot and that standard procedure was not to turn on heat pumps for testing if the temperature was above 65 degrees. The seller swore that he did not have any problems with the heat pumps. I turned them on once and the air was working and felt cool. I didn't leave them on very long. We started working in the house on Monday and turned the the upper unit on. On Tuesday, the upper unit stopped blowing cold air. I checked the fan and I could hear a "hum" sound and immediately turned off the unit and called a repair service to have them service both units.
They came today and said the upper unit fan motor was frozen and would not turn. They replaced the fan motor.
Next they put freon in both units. He had a tester and said the down unit was leaking the freon from the coils. He said you cannot repair the coils in the Trane unit and we would need a new heat pump for the downstairs.
The first floor unit is a Trane TWR036D and the second floor unit is a Trane TWR024C.
To compound the problem, he told me that both units were a 10 seer rating and you can't buy them now according to law. It's one thing to upgrade to a better seer rating but he said I'd have to replace the heat exchanger unit also if I upgraded.
I have several questions here... any help and advice would be appreciated.