kengorman

Someday all my homes will be ZEH. Air sealing insulating is the key....orientation.....we have been offering and implimenting these upgrades for years. Products will become more energywise and more mainstream purchases. Manufacturers are on the fast track with R & D. to replace 19th century products with energywise products without increased cost. Thats when it will explode. I hope to build my first ZEH soon.