Why Your Furnace Has a Strange Smell Published on November 29, 2016 Most people in Kitchener know to call Hammond Plumbing & Heating when their heating system starts making funny noises or leaking water, but did you know that funny smells are another reason to call a service technician? Check out these heating equipment smells you should never disregard. Rotten Eggs The smell of rotten eggs is very recognizable, which is why many gas companies add this recognizable odor to their gas to warn homeowners and service techs that there is an issue. If you smell this stench coming from your furnace, shut off your gas appliances straightaway as you might have a gas leak. Open the doors and windows so any gas can vent outside, and call your heating equipment service expert as soon as possible and tell them you think you could have a gas leak. Mold or Musty Your heating and cooling equipment function together to keep you comfy throughout the entire year. Since air conditioning systems can cause condensation buildup, moisture can manifest in your air duct system and produce mold, producing the musty or moldy smell. If you turn on your heating system or AC system and smell an odor like this, call Hammond Plumbing & Heating. We’ll come over immediately to examine your duct system and do an indoor air quality analysis. We can then share with you recommendations on how to eliminate the source of the odor and make sure your HVAC system is ready to keep you warm and healthy all winter long. Electrical or Burning There are several things that could be taking place if you smell an electrical or burning smell, all of which should grab your attention and should not be neglected. If you have this stench coming from your heating equipment, it’s likely something is overheating or may be a symptom of wiring problems. Shut down your heating equipment ASAP and call your furnace professional to provide a full diagnosis.