I installed a UV light system into an existing HVAC unit to improve indoor air quality. I mounted the UV light near the evaporator coil to target bacteria and mold buildup. After wiring the system into the HVAC's electrical panel, I tested the UV light to ensure it was functioning properly. This installation will help reduce airborne pathogens and allergens, providing a cleaner environment for the homeowner. I also explained the maintenance needs, such as replacing the UV bulb annually for optimal effectiveness.