Buy Parts & Accessories Online and Save More! Shop Now & Save

Why is My Car A/C Blowing Hot Air?

Air Conditioner Vent

 

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. 

More from Heiser Chevrolet of West Allis

  • 2026 Chevy Trailblazer Reliability

    Have you been searching throughout the greater Wauwatosa region for an adventure-ready SUV? The 2026 Trailblazer is waiting for you at Heiser Chevrolet of West Allis, proudly serving Milwaukee and the surrounding areas. This new vehicle is the perfect match for your dynamic lifestyle, boasting a compact design, robust capability, and undeniable confidence. But how dependable is the latest Trailblazer…

  • 2026 Chevrolet Trailblazer Performance

    Many drivers gravitate toward the new Chevy Trailblazerwhen shopping for their next versatile SUV. Boasting two fuel-efficient engine options and all-wheel drive capability, the 2026 Chevrolet Trailblazer ensures you have the power and utility you need for your busy Milwaukee lifestyle. Explore all the Chevy Trailblazer specs, from horsepower to mpg ratings, with this performance…

  • 2026 Chevrolet Trax Technology

    If you’re looking for a new vehicle to join you on the Milwaukee roads, consider the new Chevrolet Trax for sale at Heiser Chevrolet of West Allis. While you can’t go wrong with any model in our inventory, the latest Chevy Trax has been crafted to deliver exceptional comfort and amenities without compromising on quality. If you don’t want to…

Saved Vehicles

You don't have any saved vehicles!

Look for this Save icon

Once you've saved some vehicles, you can view them here at any time.

Menu

Get Directions

10200 West Arthur Avenue, West Allis, WI, 53227
Heiser Chevrolet of West Allis 42.99933, -88.04247.