@ Drkillroy-
The failures on the few Carrier heat pumps with hot water generators that I saw were water coil leaks. Since the compressor and water coils were in the basements, it really made a mess of the place. The leaks developed inside the coil themselves. I don't think that it was...
Welchita-
My experience on this, from a HVAC contractors' perspective, is that it is a good idea, but complicates the whole home heating and cooling too much for most homeowners. A Carrier dealer in my area (Eastern Washington), installed many of these in the early '90s. Most have failed...
