Gas Water Heater Safety: Warning Signs You Should Never Ignore
Gas Leak Warning Signs
A rotten-egg or sulfur smell near a gas water heater can indicate a gas leak. If you notice this, leave the area immediately, avoid switches or open flames, and call your gas utility’s emergency line from a safe distance.
Do not attempt to investigate or relight the unit yourself if you suspect a gas leak.
Combustion and Venting Warning Signs
Soot or dark staining around the unit, a consistently yellow (rather than blue) pilot flame, or a persistent burning smell can indicate incomplete combustion or a venting problem — both should be addressed by a licensed specialist promptly.
When to Call for Emergency Service
Any suspected gas leak, visible flame irregularities, or carbon monoxide detector alerts near the unit warrant immediate professional attention rather than waiting for a scheduled appointment.
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Frequently Asked Questions
Should I have a carbon monoxide detector near my gas water heater?
Yes — a CO detector near gas appliances, including water heaters, is a widely recommended safety practice regardless of the unit’s age or condition.
What should I do immediately if I smell gas near my water heater?
Leave the area right away, avoid using any switches, phones, or open flames inside, and call your gas utility’s emergency line from outside the building.
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