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Old 09-24-17, 05:02 PM   #8
oil pan 4
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Join Date: Nov 2012
Location: NM
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The problem with these units when heating or cooling is the air they draw into the house to move heat.
They work alright cooling since they are drawing in air that is maybe 10 to 30F degrees warmer than what they are trying to cool. The real problem comes when the temperature difference is 50F or more.
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