When winter sets in, most drivers forget about their air conditioning system. But your car’s AC isn’t just for summer—it plays an important role in defogging windows, keeping air quality fresh, and ensuring the system stays in good working condition. Taking care of your AC during the colder months can prevent costly repairs and keep it ready for when the heat returns.
Run the AC Regularly
Even in winter, you should turn on your AC for 10–15 minutes once a week. This keeps the compressor lubricated and prevents seals from drying out, which helps avoid refrigerant leaks. It also helps remove excess moisture from inside the cabin, reducing fog on your windows.
Use the Defroster
Your car’s defroster often works with the AC system to clear condensation. Running the defroster not only improves visibility on frosty or damp days but also keeps the AC components active so they don’t seize up from lack of use.
Replace the Cabin Air Filter
A dirty or clogged cabin filter can restrict airflow and put unnecessary strain on your AC system. Replacing it during seasonal maintenance improves airflow, prevents odors, and ensures the system operates efficiently year-round.
Watch for Warning Signs
Even in cold weather, your AC may show symptoms of trouble. Musty odors, weak airflow, or unusual noises when the fan is on may indicate mold buildup, a clogged filter, or failing components. Addressing these issues early prevents bigger repairs in the spring.
Check Refrigerant and System Health
Low refrigerant isn’t always obvious in winter since you’re not relying on cool air. But refrigerant also helps lubricate the compressor. Scheduling an AC inspection during winter maintenance ensures refrigerant levels are correct and all components are in good condition.
Final Thoughts
Your AC system does more than keep you cool—it helps with visibility, air quality, and system reliability. By running it periodically, replacing filters, and scheduling professional checks during the colder months, you’ll keep it healthy and ready to perform when warm weather returns.