Is it bad to cover your air conditioner in the winter?
What happens if you cover an air conditioner?
Covering your air conditioner will block proper air flow which can lead to mold growth on your evaporator coils. The mold can block proper airflow through your coils and decrease your air conditioner's efficiency.
Is it safe to cover the top of an AC unit?
A Cover Could Do More Harm Than Good Because moisture is all but guaranteed to seep into your air conditioner anyway, a cover can actually cause damage. Moisture inside the unit could become trapped, leading to mold.Dec 3, 2020
Is it bad to cover your air conditioner in the winter?
Though the units are certainly tested to withstand icy conditions, excessive snow and ice can be damaging to the coils over time. One thing to keep in mind is that any type of plastic or airflow-restrictive covering will actually promote rusting and internal moisture damage, and therefore should never be used.