Insulating Heat Ducts In Attic

Dia x 5 ft.

Insulating heat ducts in attic.

The department of energy claims that the average us home loses hundreds of dollars a year in heating and cooling costs. The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago. Master flow 14 in. Our heating and ac ducts are 100 within the thermal envelope in the floor trusses above our insulated basement.

Anyway the point of all this is to highlight the fact that you ve got to seal the leaks before you insulate the ducts. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. Apply a long strip of foil tape along the seam in the insulation. Insulation blocks the movement of heat but it can t stop air leaks.

But our erv ducts stand alone system not tied in w heat pump and 2 jumper ducts for pressure balancing from bedrooms are suspended above the insulation in our vented attic. If the ducts must be located within a vented attic one option for protecting the ducts and helping to minimize heat transfer between ducts and the unconditioned attic is to lay the ducts on the attic floor and cover them with the same blown insulation that is used to cover the attic floor. Hvac parts accessories. Unfortunately so many houses especially newer homes end up with ductwork running through the attic.

Model f8ds14 27 86. Secure the insulation with short strips of foil tape. L x 16 in. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct.

Heating venting cooling. Wrap the insulation around the duct and then pinch the seam closed. Proper duct insulation is a major key to ensuring your home s energy efficiency. Do you really want to be breathing the air from those spaces 24 7.

Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Ted also has inherited a powered attic ventilator. Repeat to insulate the remaining ducts. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.

Unitherm univest insulation jacket high temperature 25 in. The greater the temperature extreme between the air inside the duct and the air surrounding the ductwork the greater your need for duct insulation. Length ductwork insulation sleeve r 8.