Why Is My Car’s AC Blowing Hot Air?

Blog in Houston, Texas

rom Helpful Tips to Industry News, Keep Up on the Latest!

Why Is My Car’s AC Blowing Hot Air?


Warning Signs You Need Auto AC Repair

On a hot day, your car’s air conditioning system is meant to cool down the air in the cabin to keep you comfortable. It’s something we frequently take for granted until it’s hot outside and your car’s air conditioning stops working. It might be aggravating and inconvenient only to receive hot air instead of cold air.

If your air conditioner is blowing warm air, you should have it checked out as soon as possible so you can continue to drive in comfort. In this post, we’ll look at how your car’s air conditioner generates cold air so you can figure out what’s wrong with it.

If your vehicle’s air conditioning isn’t working the way you think it should, give us a call or see us at Eric’s Car Care in Houston, Texas, today for quick and efficient auto AC repair you can rely on.

Five Reasons Your AC Is Blowing Hot Air

We switch on the air conditioner and wait for the temperature to drop significantly, but what if your car’s air conditioner is still spewing hot air after a few minutes of waiting? Is this a sign that you’re about to have a nervous breakdown? Your auto’s air conditioning could be producing hot air for a variety of reasons. Here are a few of the most common reasons why customers need auto AC repair:

Leaking Refrigerant

One of the most common causes of a car’s air conditioner progressively losing its cool is a leak in the AC system. In some circumstances, combining an additive with freon will solve the problem. Brittle or inelastic rubber O-rings used throughout your car’s AC system are more likely to be to blame if your car is over five years old.

Electrical Issues

The air conditioning system in your car is a labyrinth of wires, fuses, switches, and relays. Any of these items can fail, causing your car’s air conditioner to stop working and spew hot air. If just one of these components stops working, your entire system is likely to break down. If you can’t locate any damaged wires, you’ll have to take the car to your dealer or a mechanic who will be able to diagnose the problem.

Failing Expansion Valve

Is your car’s air conditioning blowing cold and then hot air? It’s possible that your expansion valve has become rusted or has failed. As a result, the refrigerant flow is ineffective—either too restrictive or not restrictive enough.

Faulty Cooling Fans

The condenser also features a pair of cooling fans, which aid in reducing the heat of the refrigerant while it’s in the lines. However, the AC system will not work properly if these are broken or malfunctioning. They could stop working for various causes, including a blown fuse or a problem with the electrical system. Due to their proximity to the car’s front, they are most frequently damaged by road debris.

Blocked or Broken Condenser

The condenser is responsible for extracting heat from the refrigerant and then expelling it externally. Your car’s air conditioning, however, will blast hot air if it malfunctions for any reason. Because the condenser is located behind the front grille, road debris may have blocked or punctured one of the inside lines. While it’s feasible to remove a clog, it’s usually not viable to repair it, so you’ll have to replace it.

Compression Issues

Your car’s air conditioning system’s main component is the compressor. Coolant won’t circulate through the system if the compressor fails, which means there will be no cool air. The most prevalent cause of compressor failure is a lack of use over a long period of time. Unfortunately, the compressor has so many moving components that it’s almost preferable to replace it than repair it.

Certified Auto AC Repair You Can Trust

Car air conditioning systems are complicated and vary from car to vehicle. Many of your vehicle’s air conditioning system components are hidden beneath the dashboard and can be difficult to access. If your AC has suddenly started blowing hot air, Eric’s Car Care is here to help with professional auto AC repair. Give us a call or come see us in Houston, Texas, in the Med Center area today to schedule a service appointment. Let us make sure you have the cool air you need for the hot summer season.

Written by Eric's Car Care