What Might Cause an RV AC Unit to Freeze Up
Updated 02/03/2026 | Published 06/29/2024
Question:
Just bought a acm150 ac unit for my rv,it keeps freezing up have new thermostat new air filter and it seems to freeze during nite when it cools off
asked by: Stephen C
0
Expert Reply:
Hey Stephen, check to make sure the AC unit drain lines aren't clogged. That can cause a unit to freeze up and stop working and is one of the more common reasons for it to happen.
expert reply by:
Jameson C
0
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etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
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- 900 lbs TW
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- 2 Inch Hitch
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Jameson C.
2/3/2026
Hey Stephen, did clearing the AC drain lines help stop the unit from freezing up at night? Knowing what worked could help others dealing with the same issue in their RV.