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    This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
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    This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
  3. Replies
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    1,163

    This is the Ask Our Pro's forum. In order to post...

    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread....
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    2,095

    I would agree with namkrow. I have definitely run...

    I would agree with namkrow. I have definitely run into buzzing transformers more than once, best to replace it altogether but ive definitely been known to just cut a tiny square of furnace cabinet...
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    Another good way of finding total system CFM is...

    Another good way of finding total system CFM is to use a digital manometer and check the total external static pressure (ESP). Take static pressure readings in supply plenum between furnace and a/c...
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