During winter, many homeowners notice that indoor air feels stuffy or stale. This is often because homes are closed up more frequently, limiting fresh air exchange. According to the U.S. Environmental Protection Agency, indoor air can be two to five times more polluted than outdoor air, especially during colder months. UV lights can help support healthier indoor air quality by addressing contaminants inside your heating and cooling system.

What Are UV Lights and How Do They Work in HVAC Systems?

Ultraviolet, or UV-C, lights are installed inside heating and cooling systems to help reduce microorganisms such as bacteria, mold spores, and some viruses. UV-C light works by damaging the DNA or RNA of these microorganisms, which limits their ability to reproduce.

These lights are typically placed near the air handler or evaporator coil, where moisture and organic particles can collect. By targeting these areas, UV lights help reduce microbial buildup that could otherwise circulate throughout your home as the system operates.

How Can UV Lights Improve Indoor Air Quality During Winter?

Winter is a common time for indoor air quality concerns because heating systems run more consistently and ventilation is often reduced. UV lights help address contaminants at their source inside the system.

Winter indoor air quality benefits of UV lights include:

  • Helps limit microbial growth
    Reduces buildup in damp system components during regular heating operation.
  • Supports cleaner airflow
    Helps prevent microorganisms from being distributed throughout the home.
  • Complements air filtration
    Works alongside air filters as part of a complete indoor air quality strategy.
  • Maintains system cleanliness
    Helps keep internal components cleaner over time, supporting consistent performance.

UV lights are designed to enhance indoor air quality strategies, not replace filtration or regular system maintenance.

Why Does Indoor Air Quality Matter in Glendale During Winter?

Glendale experiences mild winters, but homes are still closed up during cooler nights. Reduced ventilation allows indoor pollutants to build up. In Arizona’s desert environment, dust and airborne particles are common, making winter an important season to focus on improving indoor air quality.

Why Homeowners Choose CDL Mechanical for Indoor Air Quality Solutions in Glendale

CDL Mechanical has been serving homeowners in Glendale, Arizona since 2016. Our experienced team focuses on improving comfort, system performance, and indoor air quality with solutions tailored to your home.

Need indoor air quality solutions in Glendale, AZ? Contact CDL Mechanical today to schedule your consultation.

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