If you're looking for ways to improve the air quality in your home, look into having a UV light installed on your HVAC. Ultraviolet light is able to kill mold, bacteria, and viruses. When you have one of these lights attached to your HVAC, the light kills germs so they can't be recirculated through your house constantly. Here's how an HVAC UV light works.
UV Lights For Evaporator Coils
One type of light you can buy is attached to your HVAC so the evaporator coils are continually bathed in UV light. The coils are targeted because this part of the HVAC is damp, and the coils collect dust and other impurities from the air.
The debris that collects on the coils makes a breeding ground for mold and bacteria. By keeping the coils bathed in UV light, germs and mold can't grow, so the air that blows out of your HVAC is cleaner. By keeping the coils cleaner, the light might also help your HVAC run more efficiently.
UV Lights For The Ducts
Another place that a UV light can be installed in your HVAC system is in the ducts. A light placed in the ducts will clean air that passes through the light so the air you breathe is cleaner. If you have allergies or a lung condition, you may want one of these UV lights installed to remove as many irritants from the air as possible.
Since the air in your home is constantly circulating through your HVAC, the air is continually being cleaned of germs and mold spores. While a coil light shines continuously, a light placed in your ducts will turn on when the HVAC starts blowing air and then shuts down when the HVAC shuts off.
UV Lights Combined With Other Air Cleaners
UV lights are effective at killing off germs and mold, but a light won't do much on its own to eliminate pet hair and pollen. You can buy UV lights that combine with other air cleaners such as a purification filter that captures smaller particles than your HVAC filter can trap. Some come with a carbon filter too that can trap gasses from outgassing carpet and other building materials in your home.
Talk to an HVAC contractor about the right type of air purification for your home. If your goal is to remove germs to reduce your risk of colds and the flu, then a UV light used alone might be perfect for your needs. However, if you want to remove other irritants from your air as well, installing an HVAC UV light with additional filters might be the right choice.