How Does A Car’s A/C Work & How Do You Maintain It

It’s a summer day or cold winter morning, and you’re cruising down the highway, trying to catch a breeze or warm-up. Suddenly, you remember you have a powerful tool at your disposal – your car’s air conditioning system.

How Does A Car’s A/C Work?

At its core, your car’s air conditioning system operates on a simple principle: removing heat and moisture from the air inside the vehicle to create a cooler, more pleasant environment. The process begins with a component called the compressor, which pressurizes and circulates refrigerant throughout the system. As the refrigerant travels through the A/C system, it undergoes phase changes, transitioning between liquid and gas states, absorbing heat from the cabin air in the process.

Next, the refrigerant flows through the condenser, releasing heat to the outside air, causing it to condense back into a liquid. The condensed refrigerant then moves to the expansion valve or orifice tube, where it rapidly expands, lowering its pressure and temperature. This cold, low-pressure refrigerant is then circulated through the evaporator, where it absorbs heat from the cabin air, cooling it down in the process. Finally, the cooled air is blown into the interior of the vehicle by the blower motor and distributed through the vents.

A/C Maintenance Tips

The cabin air filter is a critical component of your car’s A/C system, as it prevents dust, pollen, and other airborne particles from entering the interior cabin. Over time, the filter can become clogged with debris, restricting airflow and reducing the system’s efficiency. To ensure optimal performance, inspecting the cabin air filter regularly and replacing it as needed, typically every 12,000 to 15,000 miles or as recommended by your vehicle manufacturer.

To check the cabin air filter, locate the filter housing, which is usually located behind the glove compartment or under the dashboard. Remove the filter housing cover and carefully inspect the filter for any signs of dirt, dust, or damage. If the filter appears dirty or clogged, it’s time for a replacement.

When replacing the cabin air filter, be sure to use a filter that meets the specifications outlined in your vehicle’s owner’s manual. Choose a high-quality, OE-grade filter to ensure proper filtration and airflow. Installing a new cabin air filter is a straightforward process that can typically be completed in just a few minutes with basic tools.

Keep the A/C System Clean and Free of Debris

In addition to the cabin air filter, the entire A/C system must be kept clean and free of debris to maintain optimal performance. Over time, dirt, leaves, and other debris can accumulate in and around the condenser and evaporator coils, obstructing airflow and hindering heat transfer. This can result in reduced cooling efficiency and increased strain on the A/C compressor.

To keep the A/C system clean, periodically inspect the area around the condenser and evaporator coils for any signs of buildup. Use a soft brush or compressed air to gently remove any debris from the fins of the coils, taking care not to bend or damage them in the process.

Additionally, consider scheduling professional A/C system cleaning services, especially if you live in a particularly dusty or debris-prone environment.

VIP Autopro is here to help out with all your car’s A/C repairs, maintenance, or other concerns! Call us and book a visit today.