Insulating Attic Hvac Ducts

In this video this old house plumbing and heating expert richard trethewey helps a homeowner insulate his ductwork.

Insulating attic hvac ducts.

Check the speed of the blower motor on the furnace. Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. For an added layer of protection you can apply duct mastic to the tape and duct. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place.

Purchase duct wrap insulation that complies with the 2009 international energy conservation code iecc standards that specify an r value of 8 for attic ducts and 6 for ducts located anywhere else. Don t use standard cloth duct tape on hvac ductwork since the adhesive won t hold up to extreme temperatures. Department of energy attic insulation improvements combined with air sealing and proper hvac maintenance can cut your heating and cooling energy use by 20 to 50. Read this before you start thinking about adding insulation to your attic.

Press a continuous strip of foil tape to all longitudinal seams along straight runs of duct. The duct insulation should include a vapor barrier cover. Air duct cleaning los angeles is here to provide you with residential commercial air duct and hvac system cleaning services attic cleaning and insulation removal and replacement. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space.

Use metal flex or fiber board ducts that are insulated to code. According to the u s.