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Questions about repairs and parts for Nordyne furnaces, air conditioners and heat pumps for manufactured homes including Intertherm, Mac and Miller brands. Click here for Nordyne parts.

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cw1940
Posts: 9
Joined: Mon Oct 15, 2012 9:17 pm

Thu Sep 05, 2013 12:09 pm

I have 14x70 mobile home with 3ton a/c. but the main duct trunk is missing.
what size main duct trunk I need. thanks


DaleM
Posts: 385
Joined: Wed Apr 07, 2010 10:07 am

Tue Sep 10, 2013 9:25 am

Where did it go?? You will need to measure the distance from below the floor joists to the top of the framing cross members. Then have ducting made up to fit this space. Last job I did we had 7" to work with. We went with 6" by 24" duct then reduced down to 6" by 18" as we moved farther away from the furnace's location in the duct. Do you have duct drops or perimeter registers?

cw1940
Posts: 9
Joined: Mon Oct 15, 2012 9:17 pm

Tue Sep 10, 2013 10:18 pm

thanks for info after checking mobile home same size you right on it

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