"herb white" wrote in message
...
I currently have a central air condition / gas furnace combination unit
that is 15 years old. The a coil for the AC has major leaks and cannot be
repaired. Should I replace just the A coil and still have a 15 year
old unit,put in new central A C, or put in a heat pump? The winter temps
here are in the teens but I would have gas backup.
How does a heat pump work? any reply will be appreciated!!!! Herb

I would go with the heat pump and gas backup. Put in a whole new heat pump
system so everything will work together. When the air temperature gets
around 25 deg or so the heat pump will loose efficency and that would be the
time to switch over to the gas heat. Idoubt the cost of a HP would be much
more than a simple AC.

A heat pump is nothing more than an aircondition system that is made to be
reversed. Just think of it like a window AC that you turn around when you
want heat. This is done by valves that change the direction of the
refrigerant flow, in simple terms.