Updated at: 18-04-2022 - By: Sienna Lewis

The warmer the weather, the more concerned many homeowners get about the efficiency of their air conditioners. You may worry if your AC unit is working properly, or if your home is too hot. Despite this, many people fail to check the Freon levels in their air conditioners. By figuring out how to check your home air conditioner’s Freon level and making any necessary repairs, you can enjoy your summer nights a little more comfortably while saving time and money. Learn a little about Freon and how to check the Freon levels in your home air conditioner in this quick guide.

What Is Freon?

The air conditioner needs a refrigerant or coolant that can really chill the air in your AC unit in order to do its job and cool the air. In air conditioning systems, Freon serves as the most prevalent cooling agent.

Air conditioners run on Freon, but you don’t want to deal with Freon problems on your own. Chlorofluorocarbons (CFCs) are another name for Freon, and they’ve been linked to ozone depletion and are extremely dangerous. Breathing difficulties, fluid buildup in the lungs, and organ damage can result from Freon inhalation. Since Freon is currently being phased out of use in most air conditioners, it should be handled only by trained technicians. But there are safe methods for checking your AC unit’s Freon levels and verifying that the refrigerant is to blame.

How to Check AC Freon Level - YouTube

Common Signs Freon Is Low

Even if your AC isn’t working properly, it’s possible that other problems are preventing it from receiving a Freon recharge. Before you get a refill, you should rule out any other possible causes. If you notice any of these symptoms, you may have a low level of Freon in your system.


Your air conditioner will begin to blow warm air instead of chilly if the Freon level is low enough.. Place your palm in front of the vent and measure the temperature of the air to see if this is happening. In addition, if your AC is running all day and your home is still warm, you can be sure that your unit is spewing warm air.


Large leaks, on the other hand, will make a noise that seems like hissing or bubbling, even if they are silent. A Freon leak is likely if you hear that noise. That leak must be fixed before you may refill or recharge the Freon. As long as you do not fix the leak, you will be back where you started in only a short period of time.


For example, if your utility bills are higher than average or if your air conditioner seems to be always running, you may need to replace your Freon. You wouldn’t need to keep your unit running 24 hours a day if it was working properly.


Moisture on the outside of your AC unit will freeze and build up around the refrigerant pipes because of the low refrigerant. Another clue that Freon levels are low.

Checking Freon Levels (What Is Considered Low)

You can do the following checks to determine the Freon levels in your air conditioner on your own:

  • You can tell if your AC unit has low Freon levels by listening for a hissing or bubbling sound coming from it. All locations along a line can be used to determine where the noise is coming from. A hissing or bubbling sound will only be heard when the leak is considerable.
  • It’s one of the oldest and most dependable ways to check for AC leaks. You only need to use a water-and-soap solution where you suspect there is a leak. You’ll see bubbles in your mixture if coolant is leaking from that area. In spite of this being a very effective strategy, it only works if the leak is quite large. You won’t see any bubbling if it’s really little.
  • It’s possible to use an electronic sniffer to discover air leaks in your air conditioning system. These sniffers are available in a wide variety of models, but keep in mind that they aren’t always 100% accurate in spotting leaks.

Aside than Freon, there are a few additional techniques to evaluate your air conditioner’s performance, such as:

    • Clogged air filters are a common problem with air conditioners. You can check to see whether they’ve been tampered with or obstructed. You may find that a thorough cleaning of the air filter is all it takes to get your air conditioner working again.
  • Simple visual inspection of the fan is all that is required. You only need to turn on the air conditioner and look at the fan after that. You want to ensure that the fan begins to run when it is activated. A problem with the motor may be to blame.

You may need to have your Freon replenished if none of these preventative maintenance actions or Freon level checks reveal the problem. If you’re not sure how to check the Freon levels in your air conditioner or believe that you require a more thorough inspection, we suggest that you contact the HVAC contractors at Presidential Heating and Air. They offer free consultations to see if you need to refill the Freon in your air conditioning machine right now.

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What Is The Freon Inside My Air Conditioner?

This family of compounds includes Freons, which are CFCs. There was concern that these substances could deplete the ozone layer’s protective layer. R-22 is another name for the refrigerant known as Freon. Dupont was the inventor of these refrigerants.

Refrigeration, propulsion, and aerosol cans all employ Freon, a colorless, odorless gas. Chest and upright freezers have them, too. Freons are also utilized in the production of commercial and industrial equipment. As the air conditioners compress the refrigerant, it becomes hot. After passing through the coils, the hot gas cools to a liquid state.

Using the air conditioner’s fans and the cold liquid to absorb heat, cold air will be circulated throughout the room. As soon as your air conditioner starts cooling your space, this cycle will continue indefinitely..

Does my Air Conditioning Unit Need a Freon Recharge?

If your air conditioner isn’t working properly, there are a lot of possibilities.

Before you begin the process of recharging the AC unit, you must ensure that the Freon level is low.

Recharging your air conditioner causes it to begin discharging warm air rather than cold air.

To check the temperature, place your palm next to the vent that releases cool air into the room.

The temperature of the air that is being blown into your location can be determined by this method.

Don’t forget to check out our article on quiet air conditioners.

A thermostat readout can also be used to determine Freon levels. This will tell you if your battery isn’t charged.

Temperature fluctuations should be checked after resetting and turning on your air conditioner to see whether the thermostat has malfunctioned or damaged.

Having a malfunctioning thermostat may not mean that your system needs to be recharged, therefore it’s best to have it checked out by an expert.

Methods To Check The Freon In A Home Air Conditioner

The question, “how to check the freon in a home air conditioner?” is one that many people have. As a house buddy, I’m going to give you six conventional methods for monitoring your air conditioner’s refrigerant level.

When your air conditioner isn’t working as well as it used to, these alternatives are ideal. Because of this, it’s best to check the refrigerant or freon in it to determine if there is a problem. The following is a reminder. It is important to be cautious and safe with any procedure. Moving and electrical components, such as those found in air conditioners, pose a risk to users. Be aware.

Method #1. Checking the fan

If the air conditioner fan frequently moves, you should get it checked. When the cooling unit is turned on, you should check to see if the fan is running. If the air conditioner is turned on, the blower fan should already be running. This is standard practice. If this is the case, you may need to replenish your freon levels. Make sure to inspect the air conditioner fan carefully so that you don’t injure yourself. Calling in a pro is the only surefire method to know for sure.

Method #2. Look for the filters

The air conditioner filters can be found if you have access to them. Make that they are free of dust and smudges. When the air filters become so clogged with dust that they are preventing your air conditioner from operating normally, you should call a professional.

Method #3. Check if there is a frost

Your home air conditioner may have frozen up if the freon levels are out of whack. If the coolant or freon gas leaks, the air conditioner will freeze. Your air conditioner’s performance will be adversely affected as a result of this issue. If your air conditioner has ice in it, you should call the nearest air conditioner repair agency right away.

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Method #4. Soundcheck

Your air conditioner should have a pleasant sound when it is turned on. You should already be aware of an unnatural sound like hissing if you hear it. It is possible that the air conditioner’s freon has leaked. It is likely that the sound of leaking will be audible throughout the space. If this is the case, make sure to switch off any sources of heat, including candles and any other combustible materials. Then, contact the local AC repair service.

Method #5. Checking with soap

It will be easy to use this strategy. You may find out if the coolant or freon is leaking by using a soapy solution. Locate the suspected leaky tube and wipe it with a soap solution. Observe the tube’s surface for bubbles. If this is the case, a leak in your air conditioner’s freon system is likely.

Method #6. Electronically detecting

Assume you have some tools at your disposal, such as a detector. Your air conditioner’s freon levels should be checked using this method. Additionally, it would be helpful if you were conducting regular inspections on your air conditioner’s pressure meters or barometers.

Indeed, checking the freon level in your home is essential. Even in your modest dwelling, a single leak can cause havoc. If these methods don’t work for you, you may want to try something else. It’s better to call a competent air-conditioning technician to inspect the unit properly.

Can I Recharge my own Freon?

If you find that your air conditioner’s Freon level is low after performing the inspections, you should get it recharged.

In addition to making your home uncomfortable, low refrigerant levels can cause serious harm to your air conditioning machine.

The compressor may be permanently destroyed if the refrigerant returns to the external unit.

The cost of compressors can be prohibitive, thus it may be more cost-effective to buy a new AC system. Make sure the Freon level is always maintained to avoid this!

Our guide to the tiniest air conditioners is a must-read!

Your air conditioner’s Freon can be recharged, which may appear to be a simple chore and an excellent method to save money.

It is, however, extremely risky to recharge Freon on your own.

Homeowners aren’t equipped to perform a Freon recharge because they lack the specialized understanding required. As a result, consulting with an expert is absolutely necessary.

Having your air conditioner serviced by a professional can ensure that it is operating at peak efficiency by charging it correctly and doing routine maintenance inspections.

It is easy to swiftly diagnose any issues by thoroughly inspecting the entire system.

Hiring an expert can help you avoid costly mistakes and extend the life of your air conditioner.


Great! A household air conditioner’s freon level can be easily checked. I’ve outlined six methods in this post. You can use soap and electrical detectors to check the freon in the fan, filter, frost, and sound. If you’re a fan of air conditioners, you should inspect each component on a regular basis to avoid fires and other mishaps that could lead to death. There are a variety of articles on a variety of subjects available here. Thank you so much for stopping by! For the foreseeable future!