Germicidal UV (ultraviolet-C light at 254 nanometers wavelength) destroys microorganism DNA and RNA, eliminating bacteria, viruses, and fungi. UV-C light penetrates cell walls and prevents reproduction and pathogenic activity. HVAC integration uses coil-mounted or duct-mounted UV systems to sterilize surfaces and circulating air continuously.
Effectiveness and Applications
UV-C germicidal systems eliminate 99.9% of pathogens including MRSA, influenza, and coronavirus when properly installed. Coil-mounted systems cost $500 to $1500 and prevent biofilm growth and mold on cold surfaces. Duct-mounted systems range from $1000 to $3000 and treat all circulating air. Healthcare facilities, schools, and commercial offices use UV-C to reduce airborne and surface contamination by 70% to 90%.
Safety and Installation
UV-C lamps require 240V power and ballasts rated for continuous operation. ASHRAE standards and CDC guidelines establish safe installation practices with proper shielding preventing occupant exposure. Lamps last 8000 to 12000 hours and require annual replacement. When combined with HEPA filtration, UV-C systems provide comprehensive pathogen control supporting occupant health and infection prevention in healthcare and public buildings.