The ultimate aircon freon guide

What is aircon freon?

Freon is a non-combustible gas that is used as a refrigerant in AC applications. This freon starts an evaporation work over and over again to support generate chill air that can be spread all through your AC system. Freon is accessible in a couple of different applications, with some costing higher than others depending on the accessibility of the item. When people favor to an air condition structure needing to be refilled or recharged, they are referring to the levels of freon.

Uses of Freon

Freon is not just used in the AC units, but it has also been used in chest and upright freezers. On top of those, there are a big number of industrial and commercial appliances that use Freon in both food transportation and chill storage warehouses. Even dehumidifiers use R-22.

You can identify which coolant is being used in your air condition system by looking at the nameplate. This should offer a big deal of information about your unit, including electrical ratings and safety certifications. This information is likely placed on the open-air condenser unit, or else you can get in touch with the producer to find out where this plate would be placed.

Why it is vital to monitor your AC refrigerant

Your AC does not “use up” Freon; rather than the Freon is continually cycled through your air condition system to make the chill air that keeps your home relax. This indicates that you generally do not require to change the Freon in your AC system if not there is a Freon leak. Like grease in your vehicle, if you need to continually add fresh oil, there is probably a problem that needs to be addressed.

If your air condition system does develop a Freon leak, ensure to have an HVAC expert repair to leak and recharge the system as soon as easy. Otherwise, your AC is going to blow nothing but hot air into your home.

How much does it cost to change Freon?

Need to change the Freon in your air condition system? You should forever hire an expert who has the licensing and experience necessary to recharge your system. How much it costs to change the Freon in your AC largely depends on the size of the Freon leak and the type of Freon your structure uses. Fixing a Freon leak can cost anyplace between $255 to $1,600, while system recharging can cost anyplace from $160 to $400.

How often should you add freon to a home air conditioner?

How often should you add freon to a home air conditioner

The refrigerant that the manufacturers place primarily should be sufficient to last for the full of your AC useful lifetime. It has a chemical that absorbs and release heat and flow in a closely packed loop from your indoor air condition unit to the outdoor AC unit. In other words, in theory, your air conditioner should never lose refrigerant.

Anyway, if you trust that you are low on Freon, you might need to ask an expert HVAC technician to check the system.

When to call a technician

You need to call a professional if you experience the following:

Thermostat or Freon

There could be a number of factors why your AC is blowing out warm air. The thermostat is the primary place you need to look because sometimes the unit resets to activate the electronic elements of the structure. Once it is done, fix the thermostat to eighty-five degrees and wait 30 minutes, then correct it to sixty degrees.

Air filter

Secondly, you could inspect your AC air filter. If a filter is overloaded with dirt and dust, it is most likely the culprit, i.e., the cause of the malfunction. Now is probably the time to pop in a new filter.


Finally, turn off the AC, disconnect the electrical power, and check the condenser. The condenser is the outdoor part of your AC unit. Its cabinet contains a fan, compressor, condenser coil, and some other controls.

Remove the outer caging of your unit, ensure not to stretch or break any wires. Use a pipe and spray out the air condition dirt from the indoor flushing it outwards, being alert to reject spraying on any power part. Sprinkle on the aluminum condenser coils with a special cleanser product and relax for fifteen minutes to get rid of the issues, and then clean any buildup with water and let it dry.

Once the leak is placed, ensure the professional applies the DV dye. If you have had your AC for 12 or additional years and tech advises you add a fresh Freon, give yourself a little time to think about it. It could cost you one-thousand dollars, or even more, depending upon the size of your air conditioner.

How long does it take for freon to settle in an air conditioner?

How long does it take for freon to settle in an air conditioner

Freon lasts forever. It is not like gas in a vehicle, it does not get used up.

You see, your AC refrigerant system is a sealed/closed system, meaning that it does not permit refrigerant to escape in any way.

Definitely, if you are short on refrigerant your structure has a leak. So adding refrigerant with no fixing the leak wastes lots of time and cash.

R-22 refrigerant (a general refrigerant in older ACs) is costly because it is being phased out by the EPA. Adding seven lbs of Freon could simply cost you $700.

Is a leak inevitable?

Sadly, yes, age will take its toll on your AC, making leaks a natural part of your air conditioner units life. Freon flows under very high force, which finally wears down and thins within the tubing. But do not worry! A refrigerant leak does not mean you have to get a fresh unit. Leaks can be fixed simply, especially if you catch the leak in its early levels.

Early detection

It is advised that you get the Freon levels in your AC checked once a year. This will support to catch any leaks no issue they are still little. If you can pinch the leak in the bed, you will lose a smaller amount of refrigerant, which means it will cost you less to change it.

Here are a few signs to watch for that may point out you have a refrigerant leak:

  • Your AC is blowing warm air
  • Your AC is blowing chill air at night, but hot air during the day
  • Frost build up your indoor AC coil
  • Water on the floor by your furnace due to condensation
  • If you are noticing of any these things, call in a professional to check your air condition unit for leaks

How to drain freon from an air conditioner?

How to drain freon from an air conditioner

There is a single way to get rid of Freon from an HVAC structure, and that is with the help of reclaimer. The machine is made to grip the Freon, filter out the dirt’s, and save it for next use. It is unlawful to release Freon into the air. Freon has fluorocarbons that are bad to the atmosphere. When Freon is out from an HVAC structure, much of the refrigerant oil is vanished as well and needs to be bring in back into the system when the system is charged.

Step 1

Raise the hood. Place the AC low and high side hoses and the place of their respective Schraeder river. The low side hose is the biggest one that is linked to the compressor and runs to the accumulator. The top side hose is the little diameter hose and works from the condenser to the firewall or firewall H-block.

Step 2

Plug the machine in and ensure that both valves on the front of the machine are closed. Open the control device on the storage tank in the rear of the machine. Install the low-side blue line from the machine to the big diameter low-side Schraeder valve line. Fix the red-side line to the little diameter line Schraeder valve.

Step 3

Open both the red and blue valves on the front of the machine. Plush the button marked “Recover” on the keyboard. The machine will now get rid of all the Freon. When the machine is finished, it will draw the system down to approximately twenty inches of vacuum.

When the machine shut-offs, close both the blue and red valves before removing the blue and red lines from the system. Close the valve to the storage tank in the rear of the machine.

What happens when the air conditioner runs out of freon?

What happens when the air conditioner runs out of freon

Refrigerant is the “blood of your air condition system. Without the best amount, your system would not be capable to chill your home rightly. But, determining whether or not your AC system needs refrigerant can be hard because low refrigerant “symptoms” can also be symptoms of other AC problems.

Anyway, if you think your air conditioner may be low on refrigerant, look for these four signs:

  • You notice hot air coming from your vents
  • Your power bills have increased
  • Ice or frost is forming on your air conditioner
  • Your AC is bubbling noise or making a hissing

How to find freon leak in the air conditioner?

How to find freon leak in the air conditioner

Dye detection

One of the most successful ways to check for a refrigerant leak in your AC system is to conduct a dye test. This process contains delivering fluorescent dye in your HVAC structure. After it has sufficient time to flow, the dye will pour via any leaks that are in attendance.

Soap bubble detection

If you plan on checking your HVAC structure for leaks without expert help, one of the top techniques is to use the Soap bubble for check. This test is rather easy to carry out. All you need to perform is mix up some soap with hot water. Then, you will need to combine this solution for several minutes and pour on freon.

Oil detection

When a refrigerant leak is present in your air condition system, sometimes the oil will also leak out. This substance is quite easy to detect given its dark, thick consistency. It also has a potent smell that is simply distinguishable, even if you are far away.

Electronic detection

Another helpful and straightforward leak detection technique you can try involves using an electronic gadget. It permits you to scan across refrigeration parts outside of your household. When a leak is detected, this electronic gadget will sound an alarm that is simply recognizable.

How to fix freon leak in air conditioner?

How to fix freon leak in air conditioner

Here is what your choices are if you are facing the freon leak problem:

Include more refrigerant

If your unit is working properly on freon, you will have to replenish your system by adding more gas to it. Take note that Freon is greatly regulated, so it is excellent to leave a refill to the experts.

Seal leakage

Adding more Freon is just a temporary solution since the leak remains and generally grows bigger until such time that the compressor is destroyed. This is why you need to be suspicious when an HVAC expert keeps topping off your AC system with Freon but does not worry to patch up the leak.

Purchase the latest air conditioner

Since Freon is famous as an environmental risk, you might want to think about changing your AC with a fresh system that is environmentally friendly and power-efficient. These fresh energy-efficient AC systems will be invested now, but can keep you lots on operating costs in the future.

How to drain freon from air conditioner

The only way to drain freon from aircon is reclaimer but not everyone allow to do this because the process is dangerous and time consuming. Fluorocarbons are extremely persistent chemicals. We strongly recommend hiring certified HVAC expert to help.


If your AC is leaking freon, don’t wait, you should contact an expert. Freon leaking can have bad wellbeing effects on your family while outdoor leaks reduce the system’s efficiency and harm the atmosphere.

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