Vehicle air conditioning is a necessity for surviving commutes on hot summer days. Yet, wear and tear and damage can cause system malfunctions that put your comfort at risk. You need to pay attention to problems as they arise and handle them quickly to prevent them from impacting other elements. Here's a closer look at some of the most common issues and the auto repairs required. 

What Problems Indicate Vehicle AC Issues?

1. Musty Odor

Pushing cold air through elements surrounded by hot air creates condensation. This excess moisture can cause bacteria buildup in the AC system. If the microorganisms collect and grow, the AC will release a mildewy or mold-like odor when you turn on the air. This problem is most common for drivers that don't rely on their cooling system often or usually run it on full power every time.

Replacing the air filter is usually the first step to fixing the issue. If the smell persists, then the evaporator needs cleaning with an antimicrobial solution.

2. Blowing Hot Air

It's hard to beat the heat when your AC blasts hot air instead of cold. This issue can occur for a wide variety of reasons. The system relies on circulating refrigerant to cool the air, but a leak could cause it to be warm. This problem could also be caused by a broken or blocked condenser, which prevents proper refrigerant circulation. However, if the air starts cold but changes to hot, then a damaged expansion valve is likely to blame.

Even if the hot air is intermittent, continuing to run the AC can cause more harm. If this occurs, turn off the system until auto repairs are completed. 

3. Loud Noises

The level of sounds emitted by a vehicle depends on the size and style of the car. Generally, AC systems are designed to run fairly quietly. When there's a sudden change in the amount of noise being produced, it likely indicates that there's a more serious underlying issue. 

If it occurs in spring or early summer after the AC hasn't been used for months, then there may be debris, like leaves, blocking airflow. Loud squeals and grinding are likely caused by a damaged bearing, while rattling is often linked to compressor failure.

When vehicle AC issues arise, head to Dee's Auto Care Specialists in La Crosse County, WI. This local auto repair shop provides drivers across western Wisconsin with a full selection of top-quality services, whether you need brake maintenance, tire alignment, or air conditioning fixes. Learn more about their range of affordably priced services online, and call (608) 782-2530 to book an appointment.