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    What should the proper fpm velocity be for a furnace in a (3 Posts)

  • ElderGreen ElderGreen February 18, 2013 @ 1:26 PM
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    What should the proper fpm velocity be for a furnace in a

    1000 sq foot ranch house? Quite open inside without walls every 5 feet. Only the single bedroom and bathroom are partitioned off. Blower is rated for 1000cfm. Just trying to decide which ducting size for the supply. Then I'll just increase it a bit for the return. Any help is greatly appreciated folks!
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  • ElderGreen ElderGreen February 18, 2013 @ 2:52 PM
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    thinking 700

    does that sound adequate?
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  • unclejohn unclejohn February 18, 2013 @ 6:42 PM
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    At 700fpm

    Your at less then .05 SP you should be able to go up to 900 fpm with no real noise.
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