Is your Subaru Air Condition A/C blowing hot air? Learn how to fix it by recharging the A/C with freon. The procedure below will only work if the system leaks very slowly. Major A/C leaks and compressor issues should be fixed before charging the A/C.


  • Subaru AC blows hot air
  • A/C does not get cold
  • Heat works, but there is no cold air

What you will need

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AC Pro Car Air Conditioner Synthetic R134A Refrigerant, AC Recharge Kit with Hose and Gauge, 20 Oz,…
Replaces lost R-134a refrigerant and oil in automotive A/C system; Extra long 24 inch recharge hose for accessing hard to reach service ports
  • AC Recharge Kit
  • Work Gloves
  • Safety Glasses


  1. Park the Subaru on level ground. Set the parking brakes.subaru ac refrigenart recharge
  2. Next, open the hood. Pull the hood release under the dashboard to open the hood.
  3. Locate the air conditioner charging port on your Subaru. Look for the light blue cap with the L mark on top.subaru ac port charging location
  4. Start the engine and allow it to idle. Next, turn on climate control. Set the blower fan speed to maximum—set the temperature to the coldest.
  5. Connect your A/C recharge kit and start recharging your Subaru A/C system. Make sure to follow all instructions that come with your A/C recharge kit.

We hope you find the Charge Subaru Air Conditioner with Freon guide helpful. Check these troubleshooting and repair guides for more help on your Subaru.

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  1. Anonymous says:

    Aren’t you supposed to create a vacuum in the system first via a vacuum pump?

  2. Anonymous says:

    No if the cap has H you are looking at the high pressure port. You can’t connect to this port, the ac recharge kit connection won’t even fit.

    Find the port that has L on it. All Subarus have it, you just need to figure it out.

  3. Anonymous says:

    My 2010 Surbaru only has a blue ‘H’ cap. Does this mean high pressure and I need a Subaru technician to service it?