Did you recently change your HVAC filter in your Grayslake, IL, home, and it was black? If it keeps turning black, take notice and take action. Here are three reasons why this happens.

1. Clogged Air Filters

Excessive dirt in your HVAC filter can cause it to turn black. A quick fix for this problem is to set a reminder to check your filter monthly and clean or change it roughly every 90 days.

Filter changes not only keep the filter from turning black, but a clean filter keeps more allergens and pollutants out of the air and helps your HVAC system run more efficiently, and prevents excessive wear and tear on your system.

2. Black Soot Deposition

Do you burn a lot of candles in your home? If so, this habit could be causing the black soot deposition. The candle soot gets sucked into your home’s HVAC system and turns the filter black. The most common reason candle burning causes black soot is poor candle quality. Consider switching to more high-quality candles or cutting back on usage altogether.

3. Biological Growth

Indoor air that’s too humid, a dirty HVAC system, or a damaged system are issues that can contribute to biological growth that is turning your filter black. If you change the filter and the contaminants return, contact a qualified service technician to fully inspect your HVAC system. It could be a matter of adjusting your home’s humidity with a whole-home humidifier or repairing a leak in the HVAC system.

Discovering a black HVAC filter is alarming, but the team at Herchenbach Mechanical Inc. has you covered. Contact us today to discuss indoor air quality solutions or schedule HVAC services to keep your indoor comfort system running at its best. We’ve been in business for over 35 years and are available for emergency repairs around the clock.

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