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Gas Leak Detection

How long can a gas leak go unnoticed

By December 5, 2023February 28th, 2024No Comments

In every household, there are one or more appliances that rely on natural gas and propane to function. But when the gas line is damaged, there’s every possibility that it will lead to a gas leak. Unfortunately, it’s usually difficult to tell when there’s a gas leak in your house because natural gas has almost no odor.

Gas leaks affect your health or even lead to death in extreme cases. Sometimes, gas leaks in the house are inevitable, and knowing the consequences of a gas leak, you won’t want a gas leak to go on for too long before arresting the situation.

How long can a gas leak go unnoticed

A gas leak could go unnoticed for a long period, but there are ways to detect when there’s a gas leak. Continue reading to learn more:

What are the symptoms of a gas leak in the house?

  1. Health symptoms

Although this isn’t the best way to find out, you might discover that there’s a gas leak in your house when you start to experience symptoms like dizziness, nausea, headaches, fatigue, eye or throat irritation, chest pain, and difficulty breathing. This is because gas leaks will decrease the oxygen level in your home. This could vary depending on the severity of the gas leak you’re dealing with.

  1. Your gas bill is higher

You may not notice there’s a gas leak in your home, but you’ll notice an increase in gas bills. If you’re meticulous and you take cognizance of every little detail, you’ll be able to tell when there’s a spike in your gas bill. If you notice an unexplainable increase in the bills, then you’re probably dealing with gas leaks in your house.

  1. Hissing sound

Sometimes, you might hear a slow hissing sound coming from the direction of your gas cylinder or gas pipes. This hissing can be linked to a leaking valve or a bad compressor so you mustn’t discard your discovery and instead call a plumber fast.

  1. Dying house plants

Both plants and humans need oxygen to survive. Your plants might produce oxygen but they also need a little oxygen to survive; they start to wither when they’re deprived of oxygen. If you notice the plants in his house are dying, this could be a sign of a gas leak.

  1. Mist or fog

Sometimes, when there’s a gas leak in your house, it could cause a mist or fog in the atmosphere. This is due to gas escaping from an underground supply line which gathers and forms an unnatural haze around your home.

  1. Rotten egg smell

Natural gas hardly has an odor and because of this, utility companies add a substance mercaptan (aka methanethiol) to your home gas. This chemical smells like rotten eggs which helps you detect when there’s a gas leak. Whenever you notice this odor in your home, it’s best to vacate your home and call an emergency HVAC professional.

How long can a gas leak go unnoticed2


Whenever you notice there’s a gas leak in your home, you should leave your house and call a professional to fix the leak. You could lose consciousness if you stay in your house for too long due to lack of oxygen. You must call a plumbing or HVAC expert as they will be able to switch off your gas, identify where the leak is coming from, and fix the issue.

If you need an expert plumber skilled in gas leak detection, we at Modern Plumbing Group are your best choice. We have a team of highly qualified plumbers who are available around the clock to provide emergency plumbing services.

Contact us and we’ll be happy to check your home for any gas leaks.

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