Why Is My AC Blowing Warm Air In My Car?

mitsubishi ac installation

Imagine this. It’s hot outside, and you can’t wait to get inside the car to get away from the hot air. On getting inside your car and putting the AC on, instead of the air conditioner blowing the much-needed cold air, it blows warm air, and you wonder, why is my AC blowing warm air in my car?

According to Mitsubishi air conditioner installation professionals, the car AC will blow warm air due to plenty of reasons, with the common ones being:

Leaking refrigerant

When the refrigerant is leaking, the refrigerant isn’t pressurized in the compressor, and this causes it to turn into gas hence the warm air instead of the anticipated cold air. The unfortunate thing is that it’s hard to tell whether the AC is blowing hot air due to low refrigerant levels as the refrigerant turns into an invisible gas immediately it leaves the AC system.

To tell whether the problem is due to the low refrigerant levels, visit a professional with specialized tools such as UV detectors to help you figure out whether you have a leak.

If you are wondering why the AC will leak, it’s often due to plenty of reasons such as wear and tear and trauma, such as when you are involved in an accident.

Faulty compressor

It’s in the compressor where the car is getting cooled down, so the compressor is one of the most important parts of the car’s air conditioning system. The compressor’s role is to pressurize and circulate the refrigerant through the different AC stages, removing the heat from the car cabin.

Due to its work, the compressor is highly susceptible to wearing out, and when it gets damaged, the antifreeze doesn’t reach the condenser for cooling.

While the compressor can fail even when the car is working, most of the compressor problems come about when you go for a long time without using it, such as during the long winters.

To reduce the chances of the air conditioner’s compressor failing, consider keeping the AC active all year round by activating it under the defrost setting.

Malfunctioning condenser

The purpose of the condenser is to cool off the hot refrigerant back to ambient temperature once it passes through the compressor. Since it’s located at the front of the car, the condenser uses air the car passes through to accomplish the cooling.

Like any other part of the car, the compressor can break down, and when this happens, an unpleasant blast of hot air slaps you.

If the hot air results from a faulty condenser, you can tell it from looking through the grate. Are there holes? This might be the reason for the hot air.

You can also tell whether the condenser is the source of the problem depending on when it all started. Did the problem start after you had an accident that bent the bumper? A damaged condenser might be the cause of the problem.

Malfunctioning electrical system

Since most modern car systems are commanded using electronics, a problem in the car’s electrical system can cause the air conditioner to stop working. And the electrical problem can be as simple as a frayed wire or a blown fuse.

Unless you are an electrician, don’t try to fix the electrical problem by yourself. Instead, take the car to a professional who will undertake a complete visual inspection and fix any issue that might be present.

Failure of the blend door to close

The blend door is a small hatch inside the ventilation system that allows you to choose whether you want the air conditioning system to heat or cool down the car.

If you turn the cooling feature on, but warm air comes out, the system uses the heat from the engine instead of drawing in cool air. A stuck blend door often causes this, and you need to hire a professional mechanic to solve the issue.

Take good care of your car’s air conditioner.

Although air conditioner problems are bound to happen, you can reduce them from coming about by taking good care of your AC. Now and then, ask a professional Mitsubishi AC installation Plainview professional, or any other technician to look at your car’s AC and fix any issues that might be present.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top