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Old 07-21-2021, 02:31 AM   #1
BDove
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Low Air Flow from AC

My AC has really low airflow. New 2021 Alpine 3700FL. The air is cold, it’s just not getting out of the ducts. The front living is hot. Stays hot. Has two vents, one has almost no flow the other very weak. Anyone else experience this issue, how did you fix. Will Keydtone fix under warranty once I get back home?
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Old 07-21-2021, 04:22 AM   #2
Brentw
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Try this, helped mine. I did the economy version.
$$$
https://youtu.be/V9rEQb05Qv4
OR
$
https://youtu.be/fBAUuMoD-ec

Downside to the economy version, is the return plenum is smaller and may inhibit air flow.
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Old 07-21-2021, 06:54 AM   #3
Sarge2
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Welcome to the forum from Michigan... If it's brand new I'd take it back to the dealer. JMHO
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Old 07-21-2021, 08:01 AM   #4
John&Genny
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We used the RV Airflow systems that Brent linked above, but that only works with specific types of AC units and may not be suitable for yours. One other problem I've read about is the ducting actually collapsing on some units blocking the airflow. But it would be best to take it back to the dealer first and let them diagnose the problem especially if it is under warranty.
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Old 07-21-2021, 09:37 AM   #5
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Thanks everyone. Yes, I agree I will take to dealer as soon as we are through traveling and are back home. I removed some of the vent registers, which helped a little.
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