Improving Indoor Air Quality with HVAC UV Light

In Duct UV Light

Example of an In Duct UV Light

Ever since Niels Finsen won the Nobel Prize in Medicine for using ultraviolet light (UV) to treat tuberculosis, the applications for UV light have been expanding. Today it is used to sterilize hospitals and water, in germicidal lamps, and even curing nail polish faster. UV light is also installed in residential air conditioning systems and ductwork in order to improve indoor air quality.

You may ask, ‘how can simply installing some lights do that?’ Or you may think ‘that can’t be true.’ Here, Custom Climate Concepts clears up any confusion by providing answers to common questions about the installing of UV lights in air conditioning systems.

Q. Does my air conditioning system even have mold and bacteria?

A. It sure does. Studies by the National Center for Biotechnology Information (NCBI) identified that mold and mildew are present in air conditioning systems, and that fungal contamination contributes to building-related diseases like infectious diseases, allergic rhinitis, asthma and hypersensitivity pneumonitis.

In Duct UV light (blue tube)Q. Has it really been proven that UV light in your Air Conditioning ductwork, improves air quality?

A. That answer is simple: YES. In 1996, in a four-month NCBI study, UV lights were installed on some floors of an office building and not on other floors. The results were that UV lights reduced:

  • Fungal contamination within air-handling units.
  • Levels of fungal contamination in the fiberglass insulation.
  • Levels of airborne fungi in the floor space.

More recently Duke University Medical Center researchers used UV radiation to eliminate 97 percent of drug-resistant bacteria in 50 hospital rooms.

Q. Are there situations where UV light doesn’t work that well?

A. Yes. Proper home conditions and accurate installation are both necessary for UV light to be effective. That’s why it is important to hire a trusted and vetted air conditioning technician to assess all factors.

According to the National Air Duct Cleaners Association factors that can contribute to the effectiveness of UV lighting include:

  • Intensity and number of UV lamps.
  • Placement and direction of UV lamps.
  • Surrounding temperature and humidity levels of home.
  • Reflectivity of surrounding surfaces.

If you are concerned about indoor air quality call Custom Climate Concepts to discuss installing UV lights in your home air conditioning system. We are at (941) 955-COOL (2665).