Heaters have a long life span, sometimes running for up to 20 or 30 years. However, regular use can cause them to develop problems during this time. Sometimes, homeowners get a warning sign of a malfunction when their unit starts to smell. Therefore, contact a technician for possible maintenance or furnace repair if you notice any of the following odors.

What Smells Are Linked to Furnace Issues?

1. Dust

When you give your heater a break during the warmer months, dust and dirt often accumulate inside the unit and around your air ducts. When you turn the furnace back on, this debris will get hot and burn off, creating a smell. Normally, this is not problematic. However, you should change your air filter to allow better airflow to your motor. 

2. Oil

A few different situations could cause this scent. Your filter may be clogged. In that case, replacing it should resolve the issue. If it doesn't, you may have an oil leak that requires professional assistance.

3. Burning

The older your furnace gets, the more likely it is for its metal components to overheat. This heat is enough to melt away the unit’s wire insulation, which can then produce electrical sparks that can ignite a fire if left untreated. 

4. Rotten Eggs

Sulfurous scents often indicate an issue with your gas line or heat exchanger. While natural gas is odorless, most suppliers treat it with a chemical called mercaptan to give off a distinctive aroma like rotten eggs when there’s a leak. If you detect this in your home, shut off your unit, since gas can cause health problems. From outside, call a contractor who specializes in furnace repairs to assist you as soon as possible.

If you’re due for a furnace repair, get in touch with the professionals at Steve’s Plumbing & Heating. Serving homes across Wisconsin Rapids, WI, and the surrounding areas, the local business is available for all your heating and cooling needs, including replacements, maintenance, and 24-hour emergency services. Their knowledgeable technicians also pride themselves on stellar customer service and straightforward pricing. Learn more about what to expect from a visit on their website. Call (715) 421-1800 to speak to a representative.