How To Insulate Hvac Ducts In Attic

That s what happened to the ducts in the lead photo of this article.

How to insulate hvac ducts in attic.

Check the speed of the blower motor on the furnace. How to insulate the attic air sealing the attic energy saving attic insulation duration. This isn t equivalent to bringing them into the conditioned space as you ll still have additional duct load but it s a lot better than having them in unconditioned attic space. If you need help deciding which type of insulation you need set up an energy consultation.

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. Duct liner isn t generally a diy installation and if your ducts already have liner you don t need to insulate the exterior. When these ducts are exposed to exterior air the plastic jacket never gets cold enough to permit condensation because the hot attic air keeps the plastic jacket warm. Duct board much like the duct liner is also a fiberglass product.

Bury the ducts deeply in insulation. Inspect the span of ductwork to be insulated. Make sure the foil surface of the insulation is free of dust before applying the tape. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place.

Press a continuous strip of foil tape to all longitudinal seams along straight runs of duct. Energy saver dealers 204 202 views. The two most common ways to insulate ductwork are. Purchase duct wrap insulation that complies with the 2009 international energy conservation code iecc standards that specify an r value of 8.

Stop wasting money and energy with a leaking duct system. Start saving money today. Wrapping the duct in a foil faced blanket. You re throwing money out the window.

Invest in duct insulation today to safeguard your family s health and your pocketbook. Insulating hvac ductwork when insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. Use a paintbrush to apply duct mastic to the joints where an elbow connects to a duct. Applying spray foam insulation to the outside of the duct.

Look for signs of air leaks at seams or joints such. Most attic ducts are insulated flex ducts that is flex ducts with r 6 or r 8 fiberglass insulation along with an exterior polyethylene jacket. 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.