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Old 06-05-2011, 01:10 PM   #1
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Converting HVAC 10 inch duct to 6 inch HVAC duct


Can you convert a 10 inch duct to a 6 inch feed vent?

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Old 06-05-2011, 01:12 PM   #2
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Converting HVAC 10 inch duct to 6 inch HVAC duct


If your talking a round duct. Not a good idea, as it will restrict air flow too much, and harm the equipment.

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Old 06-05-2011, 01:21 PM   #3
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Converting HVAC 10 inch duct to 6 inch HVAC duct


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Originally Posted by beenthere View Post
If your talking a round duct. Not a good idea, as it will restrict air flow too much, and harm the equipment.

So, if I have 6 inch feed vents, and had 6 inch ducts that were change to 10 inch to get more air flow, can I keep the 6 inch feed vent. If so, how?
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Old 06-05-2011, 01:25 PM   #4
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Converting HVAC 10 inch duct to 6 inch HVAC duct


So if I already have 6 inch feeders, but replace a 6 inch duct with a 10 inch duct, can I use a 6 inch converter, or do I need to change the feeders to 10 inches?
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Old 06-05-2011, 01:28 PM   #5
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Converting HVAC 10 inch duct to 6 inch HVAC duct


You only gain slightly keeping the 6" take offs/start collars. Best to use the same size start collars/take offs as the pipe will be.

Be careful going to 10" pipe. It will have a much lower velocity, unless you have a lot more air going through it then the current 6" does(as in 3 to 4 times as much air).
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Old 06-05-2011, 02:18 PM   #6
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Converting HVAC 10 inch duct to 6 inch HVAC duct


Can you change a 2 ton HVAC to a 2 1/2 ton HVAC without switching out the unit?
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Old 06-05-2011, 03:20 PM   #7
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Converting HVAC 10 inch duct to 6 inch HVAC duct


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Can you change a 2 ton HVAC to a 2 1/2 ton HVAC without switching out the unit?
No. It would be nice if you could though.

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