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    [title] => HVAC-B Return Air
    [slug] => hvac-b-return-air
    [description] => 
Having the return air sized properly is very important in getting the correct static pressure. A general rule of thumb is 12"x12" per ton of air conditioning.  In other words, 1 square foot of return per ton of AC unit. 

In addition to the size of the return air, the filter plays a big role in static pressure and the velocity as well. Filters are given a MERS rating. Find out what that means and more in this CTE video.  
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    [ordering] => 6
    [price] => 2.99
    [file_id] => IEC00202
    [vm_embed_code] => 198422874
    [yt_embed_code] => Eqd_WNB2nhg
    [created] => 2017-03-15 16:31:32
    [deleted] => 0
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            [name] => HVAC-B Return Air
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