Water Heaters

How to Check if There’s a Gas Leak from the Water Heater?

Gas leakage is considered very dangerous when it takes place from the water heater in the house. There are many different types of water heaters but one of the most popular is a tankless or gas water heater. Leakage of gas is prevalent these days, and several people die every year due to the gas leak from the water heater.

Sometimes people might start thinking that there is a gas leak from the water heater but this might be confusing because gas leaks may be coming from any gas appliance in the house. Keep on reading to find out everything you need to be aware of concerning water heater-related gas leaks and how to deal with them safely.

How to Check a gas leak from the water heater?

There are multiple signs by which you can understand whether there is a gas leak from the water heater or not. The main sign is that, before distributing the natural gas to the homes, the water starts to mix up with a powerful smell and odor, known as a sulfur compound. The smell of this compound is the same as rotten eggs.

If there is a gas leak from the water heater, you might not know about it in the beginning. That’s the reason why a water heater gas leak can be very dangerous. If you start smelling this sulfur compound near the water heater, then it is strong evidence of gas leakage and you need to take action quickly.

Common Reasons for a Gas Leak from the Water Heater

Check a Gas Leak from the Water Heater

Losing out the Drain Valve:

One of the widespread causes of this water heater leak is the loss of the drain valve. If the water starts to appear leaking out from the valve, then this means gas must be leaking, and one should try to wrench it until or unless it snugs. If you don’t know how to do this, make sure to call Smile HVAC for immediate assistance.

Too Much Pressure:

Sometimes there are reasons why the water heater starts to provide more pressure than it’s supposed to, which further causes the leakage. All of this can happen due to the water temperature being set on high, or even any of the external supply of water coming in at high pressure for the tank.

Cracks in the storage tank:

There are many water heaters that are being built with glass-lined storage tanks. With time, many of the natural minerals present in the water can calcify and then create some deposits inside the tank of water. This is the reason that can cause some of the cracks in the glass lining and then cause the water heater to start leaking. Along with this, as water starts to heat up, it also expands. When there is an expansion on the heater’s glass lining, it can cause different cracks.

Some other common reasons:

Improper draining, loose fixtures, and the last reason is just the age. It can become some of the common reasons why the water heater starts to leak.

How dangerous is a Gas Leak from Your Water Heater?

No one knows. There is Carbon Monoxide in the gas at a high portion; when there comes excessive exposure to this Carbon Monoxide gas, it is hazardous to the body. The symptoms of a gas leak from the water heater are dangerous and can result in:

There are many other symptoms as well that have been associated with the leak of the gas from the water heater and turn out to be very dangerous. In short, it can kill a person, so one thing that needs to be checked is to make sure there is not any gas leak from the water heater because due to these small symptoms or reasons, they turn out to be major ones and as a result, they can’t get treated so quickly. Every person needs to be careful about this as much as possible.

How to Prevent Water Heater Gas Leaks

Preventing water heater gas leaks is essential to keep your family and home safe. One way to prevent gas leaks is to have your water heater regularly maintained by a professional. Regular maintenance can detect any potential issues and address them before they become significant problems. It’s also crucial to ensure that the gas lines and connections are secure and tightened regularly.

What to Do if You Smell Gas from Your Water Heater

If you smell gas from your water heater, it’s crucial to act quickly to prevent any danger. The first step is to turn off the gas supply to the water heater. Do not turn on any switches or use any electronic devices, as this can ignite the gas. It’s also essential to avoid any open flames or smoking in the area. Call your gas company or a professional plumber immediately to address the issue.

Is it Normal for a Water Heater to Smell Like Gas?

It’s not normal for a water heater to smell like gas. If you notice a gas smell near your water heater, it’s crucial to address the issue immediately. Even a small gas leak can lead to carbon monoxide poisoning or fire. It’s best to have a professional plumber inspect your water heater to determine the cause of the gas smell.

How to Check if Your Water Heater Gas Valve is Leaking

A gas valve leak is a common cause of gas leaks in water heaters. To check if your gas valve is leaking, turn off the gas supply to the water heater and remove the access panel. Look for any signs of gas leaks, such as hissing sounds or the smell of gas. If you notice any signs of a gas leak, call a professional plumber to address the issue immediately.


What are the signs of a gas leak from a water heater?

Signs of a gas leak from a water heater can include a rotten egg smell, hissing or whistling sounds near the water heater, or physical damage to the water heater or gas line.

What should I do if I suspect a gas leak from my water heater?

If you suspect a gas leak, immediately turn off the gas supply valve and open windows and doors to ventilate the area. Do not use any electrical devices or sources of ignition, and evacuate the area if necessary. Call your gas company or a licensed professional to inspect and repair the leak.

How do I locate the gas supply valve on my water heater?

The gas supply valve is typically located on the gas line leading to the water heater. It is a lever or knob that can be turned to shut off the gas supply.

How can I prevent gas leaks from my water heater?

Regular maintenance and inspection of your water heater can help prevent gas leaks. Have a licensed professional inspect your water heater and gas lines at least once a year, and immediately repair any leaks or damage.

What should I do if I smell gas but I can't locate the source?

If you smell gas but can't locate the source, immediately evacuate the area and call your gas company or emergency services. Do not use any electrical devices or sources of ignition, as they can create sparks that could ignite the gas.