Gas and Oil Home Heating Furnaces - a/c freezing up

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twinpeaks3ds
06-15-02, 01:00 PM
if the low sidewall return air grill is blocked will that cause an a/c to freeze up. i just thought to check that , it was half blocked, i unblocked it.

lynn comstock
06-15-02, 02:14 PM
Anything that reduces the airflow through the ductwork may lead to the coil freezing up. The most common is a dirty filter or dirty coil.