On Jan 4, 1:49*pm, bob haller wrote:
I wonder how often the solar heater will provide needed heat to the
home.

if may not be cost effective

Another factor is a forced air system frequently already
has a heat exchanger in it, the AC evaporator. Adding
another obstacle for the air to go through will create
more resistance for the blower. It might create enough
so that it burns it out the blower motor. Or the added
resistance reduces the cooling performance in summer,
etc. Overall, doesn't sound like a great idea to me.