Should I cover my AC unit in winter

No, you should not cover your entire AC unit in winter. Modern air conditioning units are designed to withstand Ottawa's harsh winter weather without full covers, and covering them completely can actually cause more problems than it solves.

Complete covers trap moisture inside the unit, which can lead to corrosion of internal components and create an ideal environment for rust to develop. They also provide attractive nesting spots for rodents and small animals, who may chew on wiring or build nests that block airflow when you start the system in spring.

However, you can protect the top of your outdoor unit with a piece of plywood or a specially designed top cover to prevent ice and snow from accumulating directly on the condenser coils and fan. This partial protection helps prevent ice damage while still allowing air circulation around the sides of the unit.

In Ottawa's climate, it's more important to ensure your AC unit has proper drainage around its base to prevent ice buildup and that any nearby gutters aren't dripping directly onto the unit. Before winter sets in, you should also remove any debris like leaves or branches from around the unit and trim back vegetation to maintain at least two feet of clearance on all sides.

The best winter protection for your AC system is an annual fall maintenance service where a technician can properly shut down the system, check refrigerant levels, and ensure everything is ready for the cold months ahead. When spring arrives, avoid turning on your AC until any ice has completely melted and you've removed any winter protection from the top of the unit.

For professional AC maintenance before winter or a spring startup service, Ottawa HVAC Pro can ensure your system is properly prepared for the seasonal transition.

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