rodneycwhitney
May 10, 2008, 05:20 PM
Can anyone provide the formula for calculating the return air register size on home a/c units. Thanks.
hvac1000
May 10, 2008, 06:07 PM
Can anyone provide the formula for calculating the return air register size on home a/c units. Thanks.
THESE ARE OLD STANDARDS. They are generic in nature. A manual D is the proper way to determine duct/return air size. Use with caution.
http://www.karg.com/PDF%20files/Presentations/Duct%20Diag%20Wis%202003.pdf