Remove Freon From Car At Home And Re-Fill [Very Easy]

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Want to remove freon from car at home? Removing the refrigerant freon from your car is a simple process, but you need to be very careful while doing it. Removing freon from a car is a process that should be done by a certified technician only and you will require an AC Recovery Machine to remove the freon from the car. This is because freon and other coolants used in the car are hazardous for the environment and should not be disposed of in the atmosphere.

Freon is a refrigerant that cycles in liquid and gas phases in the air conditioning unit and helps to regulate the temperature of your car. The air conditioning system also helps to avoid frosting of glass in the car, by maintaining a suitable temperature through the AC vents. Sometimes, the AC system might not work properly due to the following reasons:

  1. Leakage in the refrigerant
  2. Damaged Filters
  3. The refrigerant has gone bad

All these problems could be diagnosed only by removing the refrigerant from the car. So lets learn how to release freon from car air conditioner.

How To Remove Freon From Car?

The most important thing you require to remove freon from the car is the AC Recovery Machine. This machine recycles and removes the refrigerant without any damage to the environment and also helps you recharge the refrigerant.

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Follow the given steps to remove freon from car at home.

1. Locate The Low-Pressure Port

The low and high service ports provide pressure to low and high-pressure sides of the system respectively. To access the low-pressure service port, open the hood of the car, and look for the low service pressure port. It is usually located near the compressor of the air condition unit or backed by the firewall. Try to find a blue or black plastic cap that could be removed. Also, you could follow the pipe coming from the compressor.

2. Connect The Machine And Start

Once you find the low-pressure service port, connect it with the machine and turn it on. The machine would convert all the liquid coolant into vapor form, by reducing the pressure and all the other vapors and non-condensable gases would be removed from the air-conditioning system. This process would take some time and the machine will shut off automatically when all the refrigerant is removed from the system.

Also remember, the machine may restart if the pressure in the system starts to increase, and will pull out the vacuum until the system stays in this state for 10-15 minutes.

3. Remove The Machine

Congratulations! you have learned how to remove freon from car at home. Close the service hose valves and remove the pipe from the port. Remember, the moment the low-pressure valve reaches the vacuum, turn-off the compressor. This is very crucial to avoid damage to the compressor unit.

How To Recharge Freon In Car?

Now, we will discuss how to recharge the refrigerant in the car. Recharging the refrigerant has almost the same process as that of removing it.

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You will need to purchase a refrigerant charge kit to recharge your refrigerant in the car. It would be easily available at the local store or you can order it online.

Step 1: Locate The Low-Pressure Service Port

If you remember, we located the low-pressure service port for removing the freon from the car. This process also requires you to locate it and pull out the blue or black ring over it.

Step 2: Connect The Refrigerant Can To The Dispenser Hose

Connect the can to the dispenser hose of the low-pressure service port. Now, turn the engine and the AC unit on. Keep the AC at max speed and check the reading on the gauge of the can. Remember to shake the can every 5-6 seconds.

Engaging the compressor clutch is important. If it is not engaged, and the pressure is lower than 20 psi, let the refrigerant dispense until it gets engaged.

Step 3: Check The Pressure Chart

The pressure chart is available with the recharge kit, and it would correctly tell you the amount of pressure that needs to be supplied at the given temperature. This is very crucial as over or even under- pressurizing the refrigerant is not safe for your car. Keep a check on the reading, and fill it until the desired pressure is reached. Also, make sure you shake the can often.

Step 4: Check For Any Leaks

After you fill the refrigerant until the desired pressure level, check for any minor leaks that could be present. You will need a UV pen for this. Check at every valve and joints and make sure you get it fixed.

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How Many Cans Does A Car Take To Be Recharged?

Well, cars do not take “cans” to get your car recharged. The cars made these days are so efficient, that they need a very small amount of refrigerant to cool your car. But one thing is important, even a slight amount of extra refrigerant might cause a problem to the system, so make sure you follow the chart while filling the refrigerant and fill the desired amount into it.

Overcharging the system might lead to the following problems-

  1. Reduced cooling
  2. Flooding of the compressor
  3. High Pressurized system, that might explode

All these problems might lead you to change the compressor of the air conditioning unit, and this will cost you a lot of money. So, if you observe any of these signs after you recharge the refrigerant, get your car checked by a professional immediately.

Also, disposing or leaking the refrigerant is a serious offense and you might be heavily fined if you do so. So, make sure you follow all the rules while removing and recharging the refrigerant and do not cause any harm to you and the environment.

Final Words

So, we have discussed all the steps you should follow to remove freon from your car by using an ac recovery machine. Remember, removing refrigerants from the car is simple, but needs to done very carefully as the refrigerants should not leak out in the air. Follow all the safety measures mentioned.

If you like this article and have any queries, let us know in the comment section below.

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