If you are thinking about purchasing a Power-Pipe to install in your home, you may want to wait a couple of months for a possible incentive program coming out. I was talking to a Union Gas representative today and a Power-Pipe Tech that mentioned the same thing. Sounds like you will get a fair amount of change back if you install the product.
Hopefully they will make it retroactive for previous installations
The best link I can give is this one.
http://www.uniongas.com/home/ngforhome/ ... ntives.asp
Keep checking it out and it should be worth your while!
Tim
http://www.uniongas.com/residential/ene ... ex_old.asp