I installed radiant floor heat in our home when our old oil furnace bit the dust. This kind of heat is awesome: lower cost, efficient, no drafts/moving air, quiet, even heat. Heck we no longer where shoes or slippers in the winter (live in NH) and the kitties actually curl up to nap on the floor rather than on chairs. Love it and recommend it. You can put it in new home construction or retrofit it into existing homes (our house is over 100 years old).
Here's a link to the company we used:
http://www.radiantcompany.com/


