If you have an HVAC system at home, you're probably underestimating its role in indoor air quality. While the HVAC system is typically associated with providing heat in cold climates and cooling in hot climates, it also plays an important role in maintaining good indoor air quality. The UV light fixtures from Light Spectrum Enterprises, Inc. come in extensive varieties. In addition to this, their web store offers a huge selection of UV light products, including ozone UV lamps and UV lights for air conditioners.