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Old 09-21-2013, 09:32 PM   #1
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Duct & cold air return?

Building a slab on grade home. Was wondering if any heat and AC units are made to push the heat through the cold air return vent beings they are close to the floor and then when the AC is on reverse the blower to push cold air out the ceiling vents? Thnks


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Old 09-21-2013, 10:20 PM   #2
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No, none are made like that.


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Old 09-22-2013, 08:52 AM   #3
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and the reason for that is that a well designed system will mix the air in the room(s) for the various seasons. be sure your designer uses manual j and manual d for the design of your new homes hvac. If it was me I would do a lot of homework on ducts (types, sealing, fittings etc) to make sure your system is designed and installed well.
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