[Greenbuilding] Air-heated slabs

[nick pine]

Bill Chaleff <billarchtx at aol.com> wrote:

> I've designed and installed over 150 (stopped counting years ago) of these 
> since 1976.
> my article: 
> http://www.chaleffandrogers.com/templates/sip2-air_floor_construction.html

>Direct-gain floor slabs have long proven to be effective solutions to 
>passive
solar, low-cost building programs...

Oops. Wrong planet. No need to read on. Direct gain is expensive and 
inefficient, compared to air heaters.

Nick