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Friend said a heating/cooling company told him it's against code to install a 90% efficiency furnace in his mobile home. Where might I find the facts on this?
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Mobile home furnaces are required to have a minimum AFUE of 75%. The average furnace has an AFUE rating of about 80% but high efficiency furnaces can get as high as 96%. For cold weather areas this can mean a significant savings during the cold winter months.
Choosing furnaces
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