Should I Insulate Ductwork In Attic

The department of energy claims that the average us home loses hundreds of dollars a year in heating and cooling costs.

Should i insulate ductwork in attic.

It was new when the ac was put in 7 years ago. Do you really want to be breathing the air from those spaces 24 7. Remember a lot of your ductwork is either in your crawlspace or your attic. Proper duct insulation is a major key to ensuring your home s energy efficiency.

When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct. Insulation blocks the movement of heat but it can t stop air leaks. I called out the original hvac company and they took a look and said they saw no water.

It should significantly reduce the heat transfer from the ductwork to the. Apply a long strip of foil tape along the seam in the insulation. Anyway the point of all this is to highlight the fact that you ve got to seal the leaks before you insulate the ducts. Close to 25 of the energy you use to heat and cool your home disappears through leaky ductwork.

Repeat to insulate the remaining ducts. The attic ductwork is flex duct work. For an added layer of protection you can apply duct mastic to the tape and duct. Secure the insulation with short strips of foil tape.

Now if you pull off the old 4 2 insulation and seal all joints and seams in the metal ductowrk underneath with duct approved mastic then reinsulate the ductwork with r 8 0 foil backed duct wrap you will see the greatest improvement your ductwork system is capable of.