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  1. The 400 CFM per ton is an average (rule of...

    The 400 CFM per ton is an average (rule of thumb!?!?) for air handler output. It can and should be different in some cases - humid conditions may need down around 350 CFM per ton, increasing the temp...
  2. ARI (Air conditioning and refrigeration...

    ARI (Air conditioning and refrigeration institute) has an online database allowing lookups of ARI-rated equipment.

    I haven't used HVAC-Calc yet, and an earlier poster suggested considering...
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