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Why is my AC not blowing cold air in my Subaru?

If your Subaru's air conditioning (AC) system is not blowing cold air, there could be several potential causes. The issue could be related to a problem with the compressor, refrigerant levels, or other components in the AC system. Let's explore the common reasons why your Subaru's AC may not be cooling properly and what you can do to troubleshoot and fix the problem.


Potential Causes of AC Not Blowing Cold Air



  • Low Refrigerant Levels: The AC system in your Subaru relies on the proper amount of refrigerant to function effectively. If the refrigerant level is low, the system may not be able to cool the air properly. This could be due to a leak in the system.

  • Compressor Issues: The compressor is a critical component of the AC system, responsible for circulating the refrigerant. If the compressor is not working correctly, it can prevent the system from generating cold air. This could be due to a mechanical failure or an electrical problem.

  • Clogged or Dirty Condenser: The condenser is responsible for removing heat from the refrigerant. If the condenser is clogged with debris or dirt, it can impede the heat transfer process and prevent the system from cooling effectively.

  • Thermostat Malfunction: The thermostat in your Subaru's AC system controls the temperature of the air being blown into the cabin. If the thermostat is not functioning correctly, it can prevent the system from reaching the desired temperature.

  • Electrical or Wiring Problems: Issues with the electrical components or wiring in the AC system can also cause the system to not blow cold air. This could include problems with the AC compressor relay, fuses, or other electrical components.


If your Subaru's AC is not blowing cold air, it's best to have a professional technician diagnose and repair the issue. They can use specialized tools and equipment to identify the root cause of the problem and make the necessary repairs to restore your AC system to proper working order.

How do I fix my car AC from blowing warm?


DIY Diagnosis and Quick Fixes

  1. First, check the cabin air filter condition and replace it if it's dirty or clogged.
  2. Check that the heater fan is blowing.
  3. Clean off the radiator.
  4. Check all the wiring connections for the AC system that you can access.
  5. Check the refrigerant level and top it up.



Why is my car AC blowing warm air?


Low pressure in the system can occur when there is not enough refrigerant in the lines. This results in an inefficient cooling process, which can cause warm air to blow instead of cold. Refrigerant leaks could be caused by something as simple as a loose connection or a more serious issue like condenser failure.



How to make car AC cold again?


3 Ways to Make Your Car's Air Conditioner Colder

  1. Clean or Replace the Cabin Air Filter. Your car's cabin air filter is responsible for keeping dust, pollen, dirt, and other pollutants out of your AC and heating vents.
  2. Check the Refrigerant Level.
  3. Inspect the Compressor.
  4. Visit Carmedix for Professional Car AC Repair.



Why is my AC running but not getting cold?


In some cases, clogged air filters or dirty evaporator coils can also restrict airflow, forcing the AC to compensate by running at high power. To resolve this issue, it's recommended to check for clogged filters, clean coils, and consider having a professional inspect and repair the motor or fan control components.



Why is my car AC running but not getting cold?


Some of the more common causes are: low refrigerant, leaves or debris between the condenser and radiator, slow or non-moving electric cooling fan, out of calibration air blend door, faulty outside temperature sensor, faulty in-cabin temperature sensor, and a lot of other possibilities.



How to tell if Freon is low in AC car?


One of the most obvious signs that your vehicle needs a Freon recharge is that your vehicle will be blowing warm air, even after your vehicle has been running for some time. If your refrigerant gets too low, there will simply not be enough “coolant” to cool the air as it is passed through your evaporator coil.



How to fix AC not blowing cold air?


First, check your filters and coils for dirt and debris that may be impeding airflow. Once you've cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn't blow cold air, it could be that refrigerant levels are too low.



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.



How do I fix my car not blowing cold air?


How to Check Your Car AC

  1. Check to see if the cabin filter is clear; if not, replace it.
  2. Figure out the last time the condenser was replaced.
  3. When the AC is on, listen to hear the condenser hum as it spins.
  4. Make sure the condenser is free from leaves, bugs, or other debris.
  5. Check for leaks in the system.



Why does my AC engage but no cold air?


This can be caused by an electrical fault in the A/C compressor circuit or the magnetic clutch that drives the compressor.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.