The Mini UV CE ultraviolet-germicidal-irradiation light system features a new advanced active power supply with digital filtering process that accommodates every mini-split-heat-pump brand. The new power supply more than doubles the lamp’s effective service life to two years. Mini UV CE’s miniaturized components consist of two pencil-thin 9-in.-by-3/8-in. ultraviolet lamps and a 6-in.-by-1.5-in.-by-1-in. 120- or 208-230-VAC active power supply. Mini UV CE inhibits mold and other biological growth on blower and evaporator-coil surfaces and sterilizes germs, viruses, allergens, and other pathogens that can flourish in HVAC systems and be distributed throughout a building.