Start a ProjectEN

IQHab › United States › HVAC › Gas Smell Near Furnace — What To Do

Gas smell near furnace

A gas smell around a furnace or water heater can mean a leak or combustion issue. Treat it as urgent and prioritize safety.

Do this now

  1. Do not use any switch, phone or flame. Leave the house immediately.
  2. Turn off the gas supply valve if you can do so safely from outside.
  3. Call the gas utility and / or 911 from outside.

Don't do this

  • Don't flip light switches or unplug appliances.
  • Don't try to find the leak yourself.

Urgency

Extreme — evacuate and call the gas utility / 911.

Limit the damage

  • Leave doors open to vent as you exit.
  • Have the appliance inspected before using it again.

What to document

  • The date/time and where the smell was noticed.

Cost estimate

Inspection $100–$300; repair $150–$1,000+.

Professional

Gas utility, then a licensed HVAC technician.