Re: Go Green

"Fresh air ventilation built into a sealed combution unit" has no effect on the quality of air in the building.  It just allows the heating unit to function independent from the living space ventilation, so low pressure in the home does not suck air and flue gasses down the chimney. 

In older homes the chimney stack sucked air out of the home and fresh air leaked in all over the place.  Now seal the home up and you have to ventilate or breath bad air.  Ventilation causes heat to be carried out with the exhausted air, and what I am saying is that there is nothing on the market that actually recovers more heat energy than the energy used by the ventilating blowers.

What heat recovery ventilation system would you recommend and how much of the exhausted heat does it recover? 

There is certainly nothing available to recover heat from clothes dryers and stove exhausts, or is there?

Thank you