Return Ducts In Attic

Return air ducting is necessary in almost every room.

Return ducts in attic.

Can be easily cut to size. Return air leaks from attic if you measure supply and return temperatures at the. The remaining 2 tons of capacity is at least 1 5x oversized for the actual 1 load. 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.

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. My 1948 ranch house has supply ducts in the crawlspace return ducts in the attic. Used as a central return vent box filter grill not included. 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. I ve read a bunch of articles here and on bsc s site concerning ducts in the attic. 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. Can accept any size collar up to 18 in.

Hvac ductwork sizing is critical for proper heating and cooling in every room. 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. Have to get the air back to the furnace.