Possible Reasons for Pilot Light Problems


Burners are Dirty

Excess build-up of dirt or rust can block burner holes.  When this happens, gas is flooding into the chamber but it won’t light immediately. Once it does light it may sound like a loud banging sound with often puts the pilot light out.  This can be inconvenient & could be potentially dangerous.  It can be avoided with annual furnace cleanings.


If you smell gas, you should vacate your home & call your gas provider immediately.  If there is a leak or other problem with an appliance the pilot light may not be able to stay lit.  You can call for an appointment and have a technician at Treats Heating & Cooling come to your home and diagnose the problem.


There is a sensor in your pilot light that maintains the flow of gas, sometimes this can go bad & needs to be replaced.  These sensors likely always contain mercury, it is best to call a technician at Treats Heating & Cooling to replace & properly dispose of this part.

Faulty Thermocouple

A thermocouple is located near the pilot light burner and is a safety device that will shut the gas off if the pilot light goes out or the igniter fails.  The thermocouple can be replaced to resolve the problem.


If you need any help fixing pilot light problems, please don’t hesitate to call us here at Treat’s Heating & Cooling.  It would be our pleasure to serve you!  360.825.0800