Does it Work?

Yes! - it works great! The annual heating bills for the house have been about $200 per year. That is less than 1/2 of the heating costs for a similar sized home in this area.

And these heating costs have remained about the same no matter who or how many people have lived in the house, with or without pets, oil or gas heat, renters or owners.

The house is also light and airy. It is cool in the summer. It has been easy to maintain. It requires no training manual. It is great!