A representative arrived for regular HVAC check and service. Found that both of my HVAC systems were fine and cleaned outside coils. Before leaving he informed me that
1. one of them is not designed to heat as a hear pump and only heats with electric heat strips.,
2. the other one is old but runs good.
A week later the outside fan on the second system stops working and it behaves strangely. I call another company and schedule a visit. That representative find:
1. that the first heat pump needs a new safety switch, replaces it, and has it set to work (both while heating or while cooling) as a heat pump, instead of using its emergency heat strips.
2. replaces a bad condenser (2.3 reading with rating 18.6) on the second unit.
You would be better off using a company that can tell a heat pump when one sees one (and that is capable of detecting a bad condenser).