Re: Go Green with a Professional! Green Architects, Builders, an

Building standards are changing every year, making homes more air tight to keep the heat in.   Sealed buildings contain stale air, so we ventilate them.  Hot stale air is released and cold fresh air is bought in.  Heat is lost from the building with the exhausted air.  That accounts for the hot vents that homeless people sleep on in the winter.  No, there is no such thing as a usefull Heat Recovery Ventilation system available.  They all use the same type of 1 cubic foot plastic heat transfer modual.  Its about as useful as a motorcycle radiator on a city bus.  Their claims of "sensible efficiency" are misleading, because what they are really saying is that it "feels like" it is doing something. They restrict the amount of fresh air comming in to prevent freeze up.

Until we have an efficient heat exchanger to capture the heat from ventilated air, improvements in insulation beyond a certain point are detrimental to the health of the occupants.

OK, green builders, tell me please that I don't know what I am talking about.