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    maverick1038's Avatar
    maverick1038 Posts: 1, Reputation: 1
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    #1

    Jan 26, 2010, 09:50 PM
    What pressure should a pressure switch on a furnace be?
    How many inches of water column should a furnace's pressure switch register?
    johnair77's Avatar
    johnair77 Posts: 59, Reputation: 1
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    #2

    Jan 26, 2010, 09:55 PM

    Ansr. Is located on side of switch... sometimes.. ex. . 55 in. w.c.
    Justin Orr's Avatar
    Justin Orr Posts: 24, Reputation: 1
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    #3

    Jan 26, 2010, 11:56 PM

    All pressure switches are different and specific to the unit's design. There should be a little yellow sticker on it that says something like .35 in WC
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