The climbing costs of home heating fuel make affordable home upgrades all the more valuable. Reduce waste and enhance home comfort by sealing all heating and cooling ducts [1] along seams and connections with duct sealant (mastic) or metal-backed tape (never duct tape, as it doesn’t have the required staying power), followed by insulation wrap. Also consider upgrading your home’s insulation. A visit to the U.S. Department of Energy’s Insulation Recommendations page will provide guidance for your specific climate and location.
Links:
[1] http://www.moneypit.com/audio-q-a/how-seal-and-insulate-ducts