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Furnace return air ducts
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My current system (Goodman, 120,000 BTU) has a split return air duct with air feeding back into the furnace blower chamber from the left and right, passing through a filter on both sides. We are in the process for planning a replacement with a Carrier Infinity System and the contractor wants to...
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Is there any rule of thumb about the size of a a/c return duct? I cannot get my house below 78 degrees when it is 90+ outside. Even when the house gets to 75 the thermostat will not turn off the unit. I have to dial in a higher number (78). Thks cobia13
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No return ducts on the second floor - leaking air in these rooms.:mad:
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The wall separating 2 bedrooms on the second floor of the house contains a return air duct. Recently when someone walks near the wall, there is a banging noise coming from the wall. And several hours later, even though no one is upstairs, we hear banging noises again. Do you think the duct is... View more questions Search
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