Return Ducts In Attic

Return air ducting is necessary in almost every room.

Return ducts in attic.

In addition to comparing ducts in the attic to ducts inside the building envelope roberts and winkler also looked at electricity savings of other measures such as adding insulation installing better windows and using higher efficiency air conditioners. Product is knocked down for shipping and must be. Used as a central return vent box filter grill not included. The duct board return air box is an r6 the duct board return air box is an r6 insulated box that installs traditionally in a ceiling.

Have to get the air back to the furnace. I ve replaced the supply ducts and have insulated and encapsulated my crawlspace according to the best methods presented on this site. Sizing your return ducts usually depends on the size of your ducts as well as the size of your hvac system. Return ducts in my attic.

I ve read a bunch of articles here and on bsc s site concerning ducts in the attic. My 1948 ranch house has supply ducts in the crawlspace return ducts in the attic. Return air leaks from attic if you measure supply and return temperatures at the. In more cases than not a 3 ton ac with the ducts in the attic has a ton or so of load that s just from the location of the ducts in the attic and the associated duct gains leakage etc.

Can accept any size collar up to 18 in. The remaining 2 tons of capacity is at least 1 5x oversized for the actual 1 load. In most cases if you are installing ducts in each room where there is a supply you will want to go with the same size as your supply vents.