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    NCI/David Richardson
    Rob Minnick/NCI
    David Richardson/NCI
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    David Richardson/NCI
    Interior Hvac Diagram
    David Richardson/NCI
    If you know what to look for, a visual inspection provides clues to unsafe operation. It's never good for one package unit to exhaust into the economizer of an adjacent unit.
    National Comfort Institute
    Before you jump on the heat pump bashing bandwagon, look at your duct installation practices first.
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    1. Service

    RETOOL + CONQUER™

    Feb. 1, 2013
    There's a new player in HVAC/R. hilmor™ is here with a revolutionary line of tools to help you get in, get out and get on to the next job.
    There's a new player in HVAC/R. hilmor™ is here with a revolutionary line of tools to help you get in, get out and get on to the next job.