Your vehicle's AC relies on a complex electrical system, and when it starts blowing hot air, a malfunction in this system might be the culprit. If any component, such as fuses, relays, or switches, fails to function properly, the entire electrical system can shut down.  

The solution to this problem involves seeking the expertise of a reliable mechanic, as diagnosing and fixing electrical issues requires a thorough inspection of the fuse box and wiring. 

Refrigerant, also known as coolant, circulates through the AC system, removing heat from the cabin. If you notice a pong in your garage or your refrigerant levels are low, this may indicate a leak. In that case, it’s important to take your car to our trusted service center and let our expert technicians diagnose and address the issue promptly. 

The condenser plays a crucial role in cooling the refrigerant, but it can be compromised by road debris, leading to blockages or breakages. Sometimes, this can be fixed by removing debris from the grille, but if the issue persists, taking your car to a service center is advisable. 

The AC compressor pressurizes and circulates refrigerant, and it can fail because of wear and tear or inactivity during long winters. Regular use or activation under the defrost setting in newer vehicles can prevent compressor problems. 

While previous reasons are the most common, there are also other reasons why your car's AC is blowing hot air. One of them may be that your cooling fans are broken and, therefore, not removing heat from the refrigerant. 

Another reason could be a dirty air filter. In that case, you may also notice your car stuttering or jerking when accelerating.