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 the 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 comes in at high pressure for the tank.

Cracks in the storage tank:

There are many water heaters that are being built by glass-lined storage tanks. With time, many of the natural minerals present in the water can calcify and then create out some of 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 the 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.


A gas leak from the water heater is not an issue you can ignore, therefore, you need to take action as soon as possible. You should have a complete check on the water heater to ensure there’s no gas leak from it. As discussed above, the gas leak from the water heater can have very negative consequences. It can kill quickly, so you should be completely aware that there can be awful symptoms or results of the gas leak from the water heater. It needs to be stopped as soon as possible to make sure things are working correctly and accurately.