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DIY vs. Professional AC Maintenance: What You Need to Know

Published on Mar 24, 2025 by Cassie Gould

As temperatures rise, your car’s air conditioner (AC) system becomes more than a luxury—it’s essential. Whether you’re dealing with a weak airflow, strange smells, or just want to keep your car cool, understanding the difference between DIY vs. professional AC maintenance is crucial. At Kunes Auto Group of Morrison, we’re here to break it down for you.

Understanding Your Car’s AC System

Your car’s air conditioning system is a complex network of components that work together to provide a comfortable driving experience. At the heart of the system is the compressor, which compresses refrigerant gas and circulates it through the system. The refrigerant then moves to the condenser, where it cools down and turns into a liquid. This liquid refrigerant passes through the expansion valve, which reduces its pressure and temperature before it enters the evaporator.
Inside the evaporator, the refrigerant absorbs heat from the air, cooling it down. This cool air is then blown into the car’s interior through the vents, providing you with a refreshing breeze on hot days. The system also includes an air filter, which removes dust, pollen, and other contaminants from the air, ensuring proper airflow and preventing damage to the system. Regularly cleaning or replacing the air filter is crucial to maintain the efficiency of your air conditioning system.

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