Why Is My House Smelling Like Gas?

The most common source is a leak in a natural gas or propane line, often at a connection behind a stove, water heater, or furnace. A pilot light that has gone out can also let gas escape. In some cases, the smell comes from a gas appliance that is not burning fuel completely.

If you smell gas, do not assume it is harmless. Even a small leak can build up and create a fire or explosion risk. Your nose is a reliable detector because gas companies add a sulfur-like odor to make leaks noticeable. If you are unsure, treat it as a real leak.

• Check for a rotten egg or sulfur odor
• Listen for a hissing sound near gas lines
• Look for a white or dust-like cloud near a pipe
• Feel for a cold spot near a gas line
• Notice if houseplants are dying or leaves are yellowing

Water damage and gas leaks can be linked. A flood or a slow leak from a pipe can damage a gas line or cause a gas appliance to malfunction. If your home has had water intrusion and you smell gas, the two issues may be related. The pros can help with water damage cleanup, but gas safety comes first.

After the gas company has made the area safe, you may need to address water damage that occurred. A water-damaged floor or wall can hide a gas leak. In that case, a water damage inspection can help you understand the full scope. The pros handle drying and repair, not gas lines.

Have a qualified plumber or gas company professional inspect your gas lines and appliances once a year. Keep the area around your water heater and furnace clear of clutter. If you have a gas stove, check that pilot lights are lit and burners are off when not in use.

Install a natural gas detector near your kitchen and sleeping areas. Test it monthly and replace batteries as needed. Keep your gas shutoff valve location written down and make sure everyone in your home knows how to use it. Acting quickly can help prevent a dangerous situation.