Do Central Air Conditioners Use Freon?

central air conditioner

Your air conditioner should no longer require Freon refrigerant. More refrigerant will be required only if there is a leak in the cooling system. It could leak gradually over time. This is a problem because it damages the air conditioner and is very costly to replace. You may be wondering if the central air conditioner uses Freon. If this is the case, you may be wondering if it needs to be charged. We have provided the solution for your convenience. Newer, more environmentally friendly refrigerants are gradually replacing Freon. However, the air conditioner may have used Freon when you bought it. Existing systems that use Freon will need recycled Freon if recharged after January 2020. Do not add Freon to the refrigerant refill. Refilling is only necessary if the system is leaking.

central air conditioner

Removing Freon from Central AC

As previously stated, the new system cools the house with Freon. In that regard, you might be interested in knowing when Central Air Conditioners stopped using them. According to some users, the central air conditioner should be filled with Freon until the house can no longer be cooled. If there is a leak, you can always charge it with Freon. However, Freon can be expensive.
Furthermore, recycled Freon may not be easily accessible in your area. Freon does not need to be charged regularly. If a technician discovers a leak, it must be replenished once. The central air conditioner is operational now.

But first, make sure that you require a Freon charge. As a result, inspect your system from top to bottom to ensure that warm air is not causing it to flow out of the vents.

Determining whether the central air conditioner uses Freon

How can you use this information to find out if my system uses Freon? Consultation with an expert is the simplest way to determine this. You most likely know when your system was built. Let’s look at Freon’s role in air conditioning to understand better how it works.

  1. The air conditioner compresses cold Freon gas using a compressor. Oil and Freon gas is used to lubricate the compressor.
  2. When a gas is compressed, Freon heats up.

3 Freon is now moving through the coil. This reduces the temperature of the gas. This transforms it into a liquid.

  1. When it comes to liquids, they pass through the expansion valve. Allow it to cool until the water evaporates.
  2. Freon then passes through the second set of low-pressure gaseous coils.
  3. Overall, the air conditioner absorbs heat and lowers the temperature through this process.

As you can see, there is no way to turn the system off. It operates in a closed environment and continuously converts from gas to liquid. However, this does not rule out the possibility of adding refrigerant.


Once they have identified the leak, technicians need to understand ​​why they are adding Freon. In other words, they told you where the leak was and if they fixed it. If the leak is not stopped at the source, the technician may need a refrigerant the next time the air conditioner blows warm air.

In the best-case scenario, find the cause of the leak, drain the system, and fill more Freon.

However, depending on the condition of the central air conditioner, it may be better to replace it with a new unit. The reason for this is that Freon replenishment is quite expensive.

How to repair the leak

If there is a Freon leak in the copper coil, an expert should give you a quote on how to fix it. This cost is determined by the location and severity of the leak. To troubleshoot a problem, HVAC professionals typically take the following steps.

  • Use dyes or specialized equipment to locate leaks.
  • Remove or eject all Freons from the system
  • Repair leaks
  • Charge the central AC unit with Freon
  • Test the device to ensure it is working correctly.

Can You Recharge My Home AC?

This cost is determined by the location and severity of the leak. To troubleshoot a problem, HVAC professionals typically take the following steps.

  • Locate leaks using dyes or specialized equipment.
  • Drain or eject all Freons from the system
  • Repair any leaks
  • Charge the central air conditioning unit with Freon
  • Test the device to ensure it works properly

How Much Does It Cost to Recharge Home AC with Freon?

The cost of adding Freon to your system can range between $100 and $350. It can cost up to $600 to own an oversized air conditioner. This effort excludes labor costs. As a result, you must replace or charge the system. In addition to recharging Freons, you will be charged between $50 and $150 to dispose of old Freons in your approach. Refrigeration fluids are not simple liquids that can be discarded in conventional ways. It is illegal to dispose of Freon improperly. Only authorized personnel are aware of what to do with it.

Refill the freon in the central air conditioner if its level is low!

Some device standards may evolve. As previously stated, older central air conditioners use Freon, while newer air conditioners use better refrigerants.

With the previous information in mind, it is up to you to decide whether to charge your existing device or purchase a new one. We hope you find the information above helpful.

Disclosure: We may get commissions for purchases made through links in this post.

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