Why is My Car A/C Blowing Hot Air?

When driving in warmer climates or during the summer in Milwaukee, there’s nothing like turning up the A/C and relaxing in a comfortable cabin. If your car is struggling to stay cool in Wauwatosa, you may be asking, “Why is my car A/C blowing hot air?” 

You may simply need to recharge the A/C in your car, and the team at Heiser Chevrolet of West Allis can help! We explore how to fix car A/C not blowing cold air in the guide below. 

The A/C System 

Before we dive into how to fix car A/C not blowing cold air, we want to first explore how your air conditioning system works. The A/C system pulls heat and moisture from the air circulating around your cabin. A chemical called “refrigerant” is the key to cooling this air and providing a comfortable commute around New Berlin. 

Recharge the A/C in a Car 

As mentioned above, the issue could be as simple as learning how to recharge the A/C in your car. The system features several components: a compressor, serpentine belts, refrigerant, hoses, and more. If you need to recharge the A/C in your car, you can leave the task to our team or complete it at home. You can order anything you need from our parts center. 

Note: Wear safety glasses and gloves when charging the A/C system.

• Determine the ambient air temperature. If the temperature of the air is 55°F or below, do not charge the vehicle. 
• Locate the low-side service port. 
• Clear away any dust and remove the cap from the low-side service port.
• Attach the charging hose. 
• Add refrigerant based on the instructions found on its packaging. 
• Charge the system after determining the correct pressures. Monitor the pressure readings constantly when charging. Overcharging the system can lead to permanent damage. 
• Remove the charging hose.
• Check the service port cap seal before it is reinstalled. 

How to Fix Car A/C Not Blowing Cold Air

Why is my car A/C blowing hot air? If you are not sure how to fix car A/C not blowing cold air, do not hesitate to turn to the team at Heiser Chevrolet of West Allis. Our technicians can handle this task in no time so you can get back on the roads of West Allis in comfort. Contact us with any questions you may have, or stop by in person.