Why Does Your Furnace Odor? 5 Strange Furnace Smells And Their Meaning

Why Does Your Furnace Odor? 5 Strange Furnace Smells And Their Meaning

Sulfur Smell

Natural gas is extremely combustible, which makes it an excellent fuel source for equipment around your home. Unfortunately, natural gas can cause dizziness, nausea, lethargy, and erratic breathing when inhaled. Many gas providers add the chemical mercaptan as a safety measure because natural gas has no odor of its own.

This sulfur-based compound emits the unmistakable odor of rotten eggs, alerting you to the presence of natural gas nearby. You may have a gas leak if your propane or gas-powered furnace smells like rotten eggs or sulfur. Because of the dangers, you should treat gas leaks seriously and never try to locate the source yourself.

Ozone Or Electrical Burning

If you’ve ever been outside during a rainstorm, you’ve probably noticed the strong odor of ozone, which is similar to chlorine. When your furnace overheats, it may emit a similar electrical or metallic odor.

Worn bearings in your furnace’s blower motor can cause it to seize or bind as it gets older. Your furnace may need to use more electricity to push past the resistance, resulting in excessive heat buildup in the engine. Heat is often enough to melt wire insulation, and your unit could quickly cause electrical shorts and sparks, releasing the odor.

Burning Oil Or Diesel

For a variety of causes, your furnace may emit a smoky or burning oil odor:
If you keep your furnace in a basement or storage area, anything around the pilot light (such as toys, decorations, and clothing). These products may catch fire or melt, emitting an odor.

If you have an oil furnace, not all of the oil that travels through the burner may be ignited. The oil instead produces a fog that smells like a diesel engine. If the fog ignites, a big flame and a lot of smoke could result.

It’s always better to not delay in getting your furnace repaired in Lynnwood WA. If you want to seek help regarding your furnace, DVAC heating and air is the best company for you. Contact us at 425-403-7931 today to learn more!