Home Air Conditioner Smells Like Gas – What To Do?

If you've ever been inside a home where the air conditioner smells like gas, you know how alarming it can be. It's important to take action if this happens to you, as the smell could indicate a gas leak. See our compiled research on the potential issues with your AC if it starts to smell like gas.

Gas-like odor from AC could be dangerous. So, the moment you smell gas potentially leaking, follow the basic steps below:

  1. Turn off the AC power unit.
  2. Open all windows and doors.
  3. Find the source of the problem.
  4. Call an expert

To learn the best way to solve problems with AC odors, check out the tips listed below. Besides that, find out the common causes why your AC produces a gas-like odor and how to prevent this problem in the future.

technician service removing air filter of the air conditioner for cleaning, Home Air Conditioner Smells Like Gas - What To Do?

What should you do if you detect a gas leak smell on AC?

Green modern master bedroom with air conditioner - 3d rendering

If your home air conditioner smells like gas, it is important to take immediate action.

1. Turn off the AC power unit

If your air conditioner smells like gas, the first thing you should do is turn off the power unit. You should instantly unplug the unit. If the smell is coming from the vents, it's possible that there is a gas leak in the system.

2. Open all windows and doors

It's important to take action as soon as possible if you notice a gas smell coming from your air conditioner. So, open all doors and windows to ventilate the area. If necessary, evacuate the area immediately.

In this case, you are preventing everyone to get exposed to an unhealthy smell.

3. Find the source of the problem.

Once the area is safe, try to identify the source of the problem. If the smell is coming from the unit itself, it may be due to a dirty filter or blocked airflow. In some cases, a chemical reaction between the refrigerant and insulation can cause a gas-like odor.

4. Call an expert

If you cannot identify the source of the problem, call a professional for help. AC repair experts have the tools and knowledge to find the source of the gas smell and make sure your system is safe.

Don't ignore a gas smell coming from your air conditioner. Take action right away by following the steps above! By taking quick action and troubleshooting the problem, you can help keep your home safe and comfortable.

What are some common causes of gas leak smell on AC?

interior of a banglow house living room in day time without people

If you've ever wondered why your home smells like a gas station, there's a chance your AC unit is to blame. AC units produce gas as a by-product of the cooling process, and if there's a leak in the unit, that gas can escape into your home.

Gas leaks smell can be caused by a variety of factors, including loose fittings, damaged valves, and cracked tubing. Here are the common reasons why your AC produces a gas-like odor.


Dirty air conditioner filter need cleaning. Air conditioner service, repair and clean equipment.

Dust can build up over time and cause all sorts of problems for your air conditioner, including making it smell like gas. You can clean out the dust and help keep your air conditioner smelling fresh. 

  1. First, make sure to change the filter regularly. This will help to prevent dust from building up in the first place. 
  2. Second, if you notice the air conditioner starting to smell, take a look at the coils and clean them off with a soft cloth. 
  3. Finally, don't forget to vacuum around the unit regularly to help keep dust from accumulating. 

Get an electronic duster for your AC. - View it on Amazon.

Exhaust Pipe

The exhaust pipe is responsible for carrying fumes and other pollutants away from the air conditioner, and if it's damaged or blocked, those fumes can seep into your home. In some cases, the exhaust pipe may simply need to be cleaned out. Yet, if the damage is more severe, you may need to replace the entire pipe. 

Trash or Compost

As the compost breaks down, it emits a gas that can smell like sulfur or rotting eggs. If you notice this smell coming from your air conditioner, it's important to have the unit serviced by a professional. Otherwise, you could be at risk of exposure to dangerous gases.

Luckily, there are plenty of ways to get rid of the smell of compost. You can add some Venturi sticks to your compost pile. Try using a Compost Filter.


The Compressor is responsible for circulating the refrigerant throughout the AC unit. If there's a leak in the compressor, refrigerant can escape and mix with the AC's lubricating oil. This oil then gets circulated along with the refrigerant, which can cause a gas smell. In some cases, the leak may also be accompanied by a hissing noise. If you suspect your compressor is leaking, it's best to call a professional AC repair technician to take a look. 


Freon is a common refrigerant used in air conditioners. Some AC units use Freon, which is a type of refrigerant that can also cause an unpleasant smell when it leaks. If you suspect a Freon leak, open your windows and call a qualified technician to inspect your unit. In the meantime, try to avoid breathing in the fumes!

What are the dangers of a gas leak smell on AC?

Many people are familiar with the gas leak smell on AC. Few people know that this gas can actually be dangerous.

Inhaling too much of it can lead to dizziness, nausea, and even death. Additionally, the gas can explode if it comes into contact with an open flame. As a result, it is important to be aware of the dangers of a gas leak smell on AC and take steps to avoid inhaling it.

How do you go about fixing a gas leak smell on AC?

Many homeowners are all too familiar with the distinct smell of a gas leak. While the thought of a gas leak may be enough to send you into a panic, the good news is that it is usually fairly easy to fix.

In most cases, the best way to fix a gas leak is to call a qualified technician who can repair or replace the damaged line. But, if you have a small crack or hole in your gas line, you may be able to temporarily fix it with some duct tape or other sealant. Just be sure to call a technician as soon as possible to have the permanent repair made.

Always secure a professional duct tape at home. - See it on Amazon.

With a little time and effort, you can quickly deal with a gas leak and get your AC unit back up and running safely and efficiently.

Are there any preventative measures that can be taken to avoid this issue?

Air conditioner on wall background

There are a few preventative measures you can take to avoid a gas leak smell on your AC.

  1. Firstly, make sure to have your AC serviced regularly. This will help to identify any potential gas leaks before they become a problem.
  2. Secondly, keep an eye on your AC's filters. A clogged filter can cause the AC to overheat and emit a foul smell.
  3. Finally, keep vents and grilles clear of debris. A build-up of dirt and dust can also cause overheating and bad smells.

By following these simple tips, you can help to keep your AC running smoothly - and smelling fresh and clean.

Do you need a new AC unit if your unit has a gas leak smell?

If your air conditioner smells like gas, you have a problem. And while a new air conditioner unit might seem like the obvious solution, it's not always the best option.

Gas leaks could be due to a faulty installation or poor maintenance. That's why it's important to rule out those possibilities first. But if your unit is new, then the problem is likely with the installation. In that case, you should contact the company that installed your unit and ask them to come and take a look.

On the other hand, if your unit is old or hasn't been serviced in a while, then the problem is probably due to poor maintenance.

In that case, you should either clean the unit yourself or hire a professional to do it for you. Either way, addressing the issue of smells like gas will help to keep your air conditioner running smoothly for years to come.

But then, if the problem is with the unit, then it's time to start shopping for a new one. But then, make sure to do your research and find one that's right for you and your home.

Buy a new AC  unit for your home. - See it on Amazon.

Final Words

air conditioner cooling fresh system saving energy on white wall background

If you have a home air conditioner that smells like gas, it’s important to take action right away. Make sure that you and your family are safe and comfortable in your own home, so follow the tips presented earlier.

To learn more ways on keeping your AC in its best condition, check out the following articles below:

How Long Should My AC Take To Cool [7 Factors To Consider]

How To Clean The Filter On Your Central AC

How To Turn Off Fresh Air Intake On Air Conditioner

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