[Greenbuilding] ERVs, HRVs, GSHPs, PVs...

[Nick Pine]

"Doug Horgan" <Doug at bowa.com> writes:

> In a tight house in a cold climate, the indoor air will be too humid; 
> the outdoor air is less humid; you want an HRV which will bring in 
> outdoor air. A humidity-based control (which turns on the HRV when 
> humidity rises) may be a decent option.

Sounds good to me, especially if it only runs during the day, with a 10 
ft^2 solar air heater. Houses can store moisture overnight, no?

And where are the zero-energy solar-heated houses, vs direct gain houses 
with GSHPs and $10 skillion PV arrays?

Nick