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Old 04-15-2018, 06:46 PM   #1
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Brand: Thor Motor Coach
State: Florida
Posts: 90
THOR #6333
Restricted A/C airflow.

How can you tell/ measure if there is restricted airflow. Have a 2017 Quantum KM-24 where the ducting thru the roof appears to be cut from styrofoam insulation.
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Old 04-17-2018, 04:14 PM   #2
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Brand: Thor Motor Coach
Model: 2013 31L
State: Florida
Posts: 1,943
THOR #908
take the inside shroud cover down from the AC. You can see the plenum where the air pushes out of the fan, and in that space you should see openings to each side, into the roof plenums....on the left and right sides.

There was a thread fairly recently where someone didn't have the opening cut out so the air only passed through a little crack. Mine has openings each side, rectangular and several square inches in area.
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Old 04-17-2018, 07:09 PM   #3
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Brand: Thor Motor Coach
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THOR #6333
Thanks. I'll check. Unit seems to do a much better job of cooling when the vents are closed except on the a/c unit itself.
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