How to Detect a Gas Leak?

Jul 28, 2023, 17:22pm

If you notice an unusual smell in your kitchen, you may have a gas leak.

The gas used to power your household appliances is natural gas which initially has no smell. A product, THT, is added voluntarily so that it can be detected by smell.

Here is a tip that will allow you to detect and find a gas leak in your kitchen, on a gas hob, on an oven or stove.

Natural gas is a common and efficient energy source used in many homes for cooking, heating, and water heating. However, leaks can occur, posing significant risks, including fire, explosions, and carbon monoxide poisoning. Knowing how to detect a gas leak can protect your home and your loved ones. This article aims to guide you through the process of detecting a gas leak and what steps you should take if you suspect one.

How to Detect a Gas Leak?

Identifying the Signs of a Gas Leak

Here are some common signs that may indicate a gas leak:

1. Smell: Natural gas is odorless, but utility companies add a harmless chemical called mercaptan to give it a distinctive smell. Most people describe it as a rotten egg or sulfur-like odor. If you smell this inside your home, it could be a sign of a gas leak.

2. Sound: A hissing or whistling sound near your gas lines or appliances may indicate gas escaping.

3. Visual Signs: Look for unusual discolored vegetation over or near the pipeline. Inside your home, a yellow or orange flame instead of a blue one on your gas stove can be a sign of a gas leak. Additionally, excessive condensation on windows, or a white cloud or dust cloud near a gas line, could also indicate a leak.

Steps to Take If You Suspect a Gas Leak

If you notice any of the above signs, it’s crucial to act promptly:

1. Evacuate: Safety should be your first priority. Leave the house immediately. Do not use electrical switches, household appliances, or phones, as they could create a spark and ignite the gas.

2. Alert Others: Inform everyone in the building about the suspected leak, and make sure they evacuate too.

3. Call for Help: Once you’re a safe distance away from the building, call your local gas company or fire department to report the suspected leak. It’s crucial to only make this call after you’ve left the area to avoid potential ignition of the gas.

Proactive Gas Leak Prevention

Prevention is always better than dealing with a gas leak. Here are a few preventive measures:

1. Regular Inspection: Have your gas appliances, heating system, and pipes inspected regularly by a qualified technician.

2. Install Gas Detectors: These devices can detect a gas leak and sound an alarm, giving you an early warning and potentially saving lives.

3. Know How to Shut Off Your Gas: In an emergency, knowing how to turn off your gas supply can help prevent a minor leak from becoming a major one.


If you ever have a leak in your kitchen, don’t panic. In the room where you have a gas stove or gas oven, there must be low and high ventilation, allowing the gas to be evacuated in the event of a leak.

Several products can be used to detect a gas leak:

  • You can find “thousand bubble” bombs on the market: they allow you to direct the foam directly into the connection where you suspect a gas leak.
  • You also have electronic devices that can detect gas leaks with great accuracy.
  • If you don’t have these products at home, it’s best to use a bowl of soapy water and a brush.
  • The principle will be to lather the product well.
  • After that, apply the foam either to the pipe or to the gas nozzle with a brush.

How to Detect a Gas Leak?


After applying the foam to the area where you suspect a leak, you should wait a few seconds to observe the reaction. The test here is carried out on a stove.

  • If you get bubbles, it means there is a gas leak.
  • If you have a burner leak, you should check your faucet to make sure you have a bad seal.
  • If you haven’t noticed any gas leaks from your hob, you need to check its gas supply.

It is also possible that the leak is coming from the pipe of your installation.

  • If you have a non-flexible hose (flexible plastic or stainless steel), it has an expiration date on it. As a general rule, for safety reasons, it needs to be changed every 8 years.
  • For stainless steel hoses, there is no expiration date.

In conclusion, detecting a gas leak is about being aware of the tell-tale signs, such as a rotten egg smell, hissing sound, or visible signs around gas appliances. If you suspect a leak, ensure the safety of all inhabitants by evacuating and then contacting professionals. By adopting preventive measures like regular inspections and installing gas detectors, you can enhance your home’s safety and enjoy the benefits of natural gas without the worry. Always remember, safety should be your number one priority when dealing with potential gas leaks.