Do outdoor air conditioning units need protection from the winter elements? Covering your HVAC unit may seem like a logical step, but experts say the answer isn’t so simple.
The case against covering your HVAC unit
Some professionals caution that tightly wrapping an AC unit can do more harm than good. Moisture trapped beneath a cover can lead to rust, mold, and premature corrosion. In addition, a fully covered unit may attract rodents or other pests looking for shelter, potentially causing costly internal damage.
Instead of a full wrap, some experts recommend lighter maintenance. Cleaning the unit, clearing away leaves and debris, and using a breathable or top-only cover can help prevent buildup without restricting airflow. These steps offer protection from snow and ice while reducing the risk of moisture damage.
However you choose to handle it, experts say care is important.
“People don’t always realize that even a small draft around a window unit can have an outsized impact in the winter,” said Cleveland.com weather reporter Ryan Cohick. “When temperatures dip into the 20s or teens, that little bit of air loss makes a noticeable difference in comfort — and sometimes in your energy bill.”
Climate is important in determining whether you should cover your HVAC unit
Climate and location do play an important role in whether to cover an AC unit. In areas with heavy snowfall or frequent ice storms, a partial cover may provide peace of mind. In milder regions, experts say routine cleaning and seasonal checkups are a better option to keep the system running smoothly.
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