Gas Smell Near Furnace
Common Symptoms
Rotten egg or sulfur smell near furnace
Gas odor when furnace runs
Smell near gas lines
Gas odor that comes and goes
Strong gas smell (emergency)
Possible Causes
Several factors can contribute to this problem. Understanding the cause helps determine the right solution.
1Gas leak in supply line
2Loose fitting or connection
3Cracked heat exchanger
4Incomplete combustion
5Normal small amount at ignition
6Pilot light issues
What You Can Check First
Before calling a technician, try these simple checks that may resolve the issue.
1
STRONG SMELL: Evacuate immediately, call gas company from outside
2
Faint smell: Turn off gas supply at valve
3
Do NOT use electrical switches or flames
4
Open windows if safe to do so
5
Do NOT attempt to find leak yourself
When to Call a Professional
Any persistent gas smell - call immediately
Strong gas smell - call 911 and gas company first
Gas company confirms no exterior leak
After gas company visit for furnace inspection
Never ignore gas smells
Experiencing any of these situations?
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