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    rsheppard's Avatar
    rsheppard Posts: 1, Reputation: 1
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    #1

    Oct 29, 2014, 11:58 AM
    I have a 340 aav model in 2 story house of 2,000 sq ft per floor, 4,000 total.
    Approx how many air exchanges per hr in bedroom 225 sq Ft 2,250 cu ft
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Oct 29, 2014, 03:29 PM
    That model comes in many BTU configuration. Volume is based on blower speed minus flow limiting items. You would need to measure the air flow at the vent with a Velometer, determine CFM based on register size and then divide that into room volume.
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