When you first turn on your furnace for the year, you'll most likely notice some odd smells. Sometimes, an unusual odor results from turning on an HVAC system that hasn't been used in a while. In other cases, it may indicate a need for heating repairs. Take a closer look at three common odors and what they mean, below.

3 Types of Furnace Odors & What They Mean

1. A "Hot" Scent

One of the most common odors residents experience is often described as "hot," which is usually the result of burning dust. When your HVAC system hasn't been used in a few months, dust can build up within the ductwork, as well as in your furnace. Turning on your furnace burns the dust off of these elements and releases this unpleasant odor. While it's typically harmless, you can ensure your system is operating safely by scheduling furnace maintenance before the cold weather arrives.

2. Burning Plastic

Another unusual but common odor is burning plastic, which is a more potent smell than burning dust. In many cases, this odor is a result of something dropped into the ductwork, which is especially common with floor vents. However, the scent can also be a result of a more serious issue, like overheating. With such a range of causes, it's best to play it safe and contact your furnace repair specialist.

3. Mustiness

When you turn on your furnace for the first time, you may also experience a musty scent similar to soil. This odor usually occurs as a result of dirt buildup in the ductwork. The most common fix for mustiness is changing out your HVAC air filter, but if the odor lingers, you may want to schedule a system inspection to verify the cause.

If you notice something out of the ordinary with your furnace, turn to Steve’s Plumbing & Heating for reliable heating repairs. From new installations to repairs and maintenance, the Wisconsin heating specialists have earned a reputation for high-quality, honest, and affordable services. The team services residential clients throughout Marshfield, Stevens Point, Wausau, and Wisconsin Rapids. Call the local business at (715) 421-1800 to schedule your appointment, or learn more about the services available online.