Leaky, uninsulated ducts in crawlspaces and attics waste huge amounts of energy and money. Use duct wrap insulation for a quick fix with a big, immediate payoff.
with This Old House plumbing and heating expert Richard Trethewey | thisoldhouse.com | from How to Insulate Ductwork
Allow a gap between the fan and insulation, if required by the manufacturer and local codes. Attach the duct to the fan body.
HVAC Tape High Heat Duct Insulation Tape 2 x 150
Duct Diagrams | Figure 1 - HVAC furnace and duct system
Duct Insulation Wrap, R8 HVAC Insulation, Duct Work Insulation
Prodex Total 16 Inch Insulation reflective insulation for in-floor heating systems in a ceiling. delivered to your door at only a small cost above fiberglass
E/O 12 in. x 15 ft. Self-Stick Foam/Foil Duct Insulation FV516 at The Home Depot - Mobile
Duct Insulation, 1-1/2In x 48In x 25Ft
Heating Duct Insulation