Hi! Have anyone replace the original AC/Heat Pump? I would like to replace it for a most energy efficient unit, however I have a contractor to look at it and he said it need to be replaced with a similar unit, and the one we have are not build any more. He said he has not see any similar model from any of his provider.
I wonder if anyone on 40 or 44 building have been able to replace the unit, and what company they use.