Does my HVAC Need UV Lights?
Have you heard the buzz about HVAC systems having a UV light installed? Are you wondering what this is for? Is it necessary? Is it helpful? UV (ultraviolet) lights are the newest gadget to help keep the air quality healthy in your home or office. The lights help by preventing mold and mildew from forming in the system and keeping it out of your home.
Mold and mildew can be very sneaky. It can stay dormant for a bit, but once any humidity is present, it will bloom and then move around your home. In addition, contamination can be present in the materials of a building. These pollutants move into other parts of the house via the HVAC. A UV light can help eliminate many types of fungi, bacteria, germs, viruses, and pathogens. Think of this light as a lightsaber killing the bad stuff before it can get into your home.
Two kinds of HVAC UV lights
Coil Sterilization: You put this light inside the return air duct. As the air passes through it is sterilizes the air before it reaches the coils. This light stays on all day and night and is the best priced of the two.
Air Sterilization – this UV light unit hits all the air that is moving thru your system. Installation of this type of unit is also in the return duct. However, the unit will only turn on when the air is blowing.
Maintenance and cost
Coil sterilization: The unit cost can widely range. (Amazon has them listed from $100 to over $600) Light bulbs can last up to 9000 hours, just over one year. Replacement bulbs typically cost from $70 – $120. Replacing the bulb during each annual HVAC service and maintenance is a simple task.
Benefits of HVAC UV Lights
- Controls mold and bacteria
- Germs are not re-circulated by HVAC system
- Maintain a cleaner coil, improving cooling efficiency by maintaining a cleaner coil.
- Reduce electricity cost by operating more efficiently
- Reduces clogging in condensate drain lines by preventing algae growth.