Why is my Subaru AC blowing hot air?
If your Subaru's air conditioning (AC) system is blowing hot air instead of cool air, there could be a few potential issues. The most common causes include a refrigerant leak, a problem with the compressor, or an issue with the electrical system. Let's dive into the details to help you diagnose and fix the problem.
Potential Causes of Hot Air from Subaru AC
Refrigerant Leak
One of the most common reasons for a Subaru AC blowing hot air is a refrigerant leak. The AC system relies on refrigerant to absorb heat from the cabin and expel it outside the vehicle. If there is a leak in the refrigerant lines, hoses, or other components, the system will lose its charge and be unable to cool the air effectively. This can cause the AC to blow hot air.
Compressor Issues
The AC compressor is the heart of the cooling system, responsible for circulating the refrigerant. If the compressor is failing or not functioning properly, it can prevent the system from cooling the air. Symptoms of a bad compressor include the AC blowing hot air, unusual noises, or the compressor not engaging at all.
Electrical Problems
The AC system relies on various electrical components to operate, including the compressor, fans, and control modules. If there is an issue with the wiring, fuses, or other electrical components, it can prevent the AC from working correctly and result in hot air being blown into the cabin. Checking for any blown fuses or loose/damaged wiring connections is important in diagnosing electrical problems.web>
Troubleshooting Steps
- Check the refrigerant level and inspect the system for any leaks.
- Inspect the AC compressor to ensure it is engaging and operating properly.
- Examine the electrical components, including fuses, wiring, and control modules.
- If the issue persists, it may be necessary to have a professional mechanic diagnose and repair the AC system.
Addressing the root cause of the hot air issue is crucial to restoring your Subaru's AC system to proper cooling function. By following these troubleshooting steps, you can identify and fix the problem, ensuring you stay cool and comfortable on the road.
Why is my AC blowing hot air when it's on cold?
Dirty evaporator coil caused by a dirty air filter
Chances are, your thermostat is set to cool, and you're still getting hot air. Now what? The cause could be a dirty evaporator coil caused by a dirty air filter. This keeps your air conditioner from properly cooling your home.
How do I fix my car AC blowing hot air?
DIY Diagnosis and Quick Fixes
- First, check the cabin air filter condition and replace it if it's dirty or clogged.
- Check that the heater fan is blowing.
- Clean off the radiator.
- Check all the wiring connections for the AC system that you can access.
- Check the refrigerant level and top it up.
Do subarus have AC problems?
It appears that there is a known problem with one A/C compressor part number used on some Subarus in model years 2014 - 2016. For a couple weeks I had been hearing a ``moaning'' whenever the compressor's clutch engaged (rather than just the usual ``Click--Whirr''.
How do I fix my AC that only blows hot air?
AC Blowing Warm Air? Try These 3 Solutions First
- Step 1: Check Your Thermostat. Switch thermostat mode to “Cool” Is the AC fan set to “Auto” or “On”?
- Step 2: Check Your Breaker/Fuse Box. Locate HVAC Breaker or fuse. Ensure HVAC breaker or fuse has not been tripped or blown.
- Step 3: Check Filter. Unplug AC Unit.
How to tell if a Subaru AC compressor is bad?
Here are some signs that your AC compressor is about to fail – or has failed already.
- AC not as cold as it should be.
- Noises coming from the engine compartment.
- Damage evident on the AC compressor.
- Compressor clutch will not engage.
- Connected Concerns.
Why is my AC blowing hot air on my Subaru?
Leaking Refrigerant: AC systems are sealed, but over time, they can develop leaks. Leaks can cause a gradual loss of refrigerant, which ultimately results in warmer air blowing from the vents.
