How do you put freon in a 2004 Honda Accord?

My air conditioning is running pretty warm, and I think it’s due to low refrigerant levels in the AC system. What’s the best way for me to add freon to my Accord?

Joshua Levy · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Air conditioning is an essential part of a comfortable car ride when it’s warm outside. While the AC system can be complicated overall, replacing the refrigerant is pretty easy!
Follow these steps to put freon in your 2004 Honda Accord:
  • Step 1: Check your owner’s manual for information on the AC system, including the location of the pressure valve under your hood.
  • Step 2: Open the hood and find the low-pressure plug—it should have the letter L on the cap. Remove it.
  • Step 3: Start your car and set the air conditioning to the highest power and lowest temperature.
  • Step 4: Shake the refrigerant canister before you start. Then, clamp the canister hose to the low-pressure valve.
  • Step 5: Slowly release freon into the AC system, keeping a cautious eye on the pressure gauge as you do. Be sure to stop as soon as you hit the ideal pressure, as specified in your owner’s manual.
  • Step 6: Take off the refrigerant and reattach the cap.
Hopefully, those steps help you recharge your air conditioning. But remember, refrigerants can be dangerous. Make sure to use gloves and goggles while you work to avoid any serious injuries.
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