Why is my AC blowing hot air on my Subaru?
If your air conditioning (AC) system in your Subaru 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 troubleshoot and resolve the problem.
Potential Causes of Hot Air from the AC
There are several reasons why your Subaru's AC might be blowing hot air instead of cool air. Here are the most common culprits:
- Refrigerant Leak: The AC system relies on refrigerant to absorb heat from the air and cool it down. If there is a leak in the refrigerant lines or components, the system will not have enough refrigerant to function properly, leading to warm air being blown into the cabin.
- Compressor Failure: The compressor is the heart of the AC system, responsible for circulating the refrigerant. If the compressor fails or is not working correctly, the AC will not be able to cool the air effectively.
- Electrical Issues: Problems with the electrical components, such as the AC control module, sensors, or wiring, can also cause the AC to malfunction and blow hot air.
- Blocked or Dirty Condenser: The condenser is responsible for dissipating the heat from the refrigerant. If the condenser is blocked or dirty, it can't effectively remove the heat, leading to warm air being blown into the cabin.
If you're experiencing hot air from your Subaru's AC, it's best to have a professional mechanic diagnose the issue and provide a solution. They can use specialized tools and knowledge to identify the root cause and make the necessary repairs.
Troubleshooting Steps
Here are some steps you can take to troubleshoot the issue:
- Check the refrigerant level: If the refrigerant is low, it could be due to a leak. Have a mechanic inspect the system for any leaks and recharge the refrigerant if necessary.
- Listen for the compressor: Turn on the AC and see if you can hear the compressor running. If it's not running, there may be an issue with the compressor or the electrical system.
- Check the condenser: Visually inspect the condenser for any blockages or debris that could be preventing proper heat dissipation.
- Monitor the temperature: Use a thermometer to check the temperature of the air coming out of the vents. If it's not significantly cooler than the outside air, there may be a problem with the system.
If you've tried these troubleshooting steps and the issue persists, it's best to have a professional mechanic diagnose and repair the problem to ensure your Subaru's AC system is working correctly and efficiently.
Why is my car AC running but not cooling?
Common Reasons AC Doesn't Run Cold
The most common causes of broken air conditioning leaks or compression issues. If you are feeling cool — but not cold — air, the issue could be a clogged filter, a problem with the cooling fan, signs of radiator trouble, or it could simply mean it's time to recharge your AC.
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 to fix car AC not blowing cold air?
How to Check Your Car AC
- Check to see if the cabin filter is clear; if not, replace it.
- Figure out the last time the condenser was replaced.
- When the AC is on, listen to hear the condenser hum as it spins.
- Make sure the condenser is free from leaves, bugs, or other debris.
- Check for leaks in the system.
Why is my AC blowing hot air 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.
Should I turn my AC off if it's blowing hot air?
One of the solutions to HVAC blowing hot air would be to turn off your unit, clean the condensation drain, and allow the coils to defrost before turning the system back on.
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.
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 stop a fan blowing hot air?
You can also freeze water bottles and place them in front of a fan to help circulate cooler air. Placing a damp, cool cloth in front of or over a fan is another way to lower the temperature of circulating air in the home.
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''.
Why is my Subaru AC not getting cold?
The first possibility is that there is a refrigerant leak. The leak may be found in the evaporator, condenser or hose in which case you should bring your car to a mechanic to be repaired. Another reason that your air conditioner may not be blowing cool air is because the compressor has gone bad.
