Steril-Aire, Inc. (Cerritos, CA) has introduced a new line of extended-length "UVC Emitters(tm)" in 36 and 42 in. lengths for application in large hvac systems. The devices are designed to kill the microbes that grow in and circulate through these systems, such as bacteria and viruses (including bioterrorism agents), mold, and mold products. The devices also keep coils and drain pans clean, reducing maintenance requirements for these components while returning or maintaining coil heat exchange efficiency for energy savings.