Insulating Heat Ducts In Attic

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.

Insulating heat ducts in attic.

When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. Insulation blocks the movement of heat but it can t stop air leaks. Ted also has inherited a powered attic ventilator. The greater the temperature extreme between the air inside the duct and the air surrounding the ductwork the greater your need for duct insulation.

Model f8ds14 27 86. Master flow 14 in. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. 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.

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. L x 16 in. Length ductwork insulation sleeve r 8. 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.

Do you really want to be breathing the air from those spaces 24 7. Unfortunately so many houses especially newer homes end up with ductwork running through the attic. Apply a long strip of foil tape along the seam in the insulation. Unitherm univest insulation jacket high temperature 25 in.

Our heating and ac ducts are 100 within the thermal envelope in the floor trusses above our insulated basement. Secure the insulation with short strips of foil tape. Heating venting cooling. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct.

Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. Remember a lot of your ductwork is either in your crawlspace or your attic. Dia x 5 ft. Anyway the point of all this is to highlight the fact that you ve got to seal the leaks before you insulate the ducts.

Proper duct insulation is a major key to ensuring your home s energy efficiency. The department of energy claims that the average us home loses hundreds of dollars a year in heating and cooling costs. Close to 25 of the energy you use to heat and cool your home disappears through leaky ductwork.