The Damper Series: Life Safety Actuators
Introduction
The history of fire and smoke damper actuators began in the mid-20th century, as increasing larger commercial and institutional structures relied on centralized HVAC systems. These HVAC designs penetrated walls and ceilings, creating pathways where fire and smoke could travel to other compartments. To create compartmentation, dampers utilizing basic, non-motorized gravity operated designs such as fusible links and spring-loaded mechanisms were installed in these penetrations.
The 1970s saw the introduction of early motorized actuators for standard commercial dampers, but a major shift occurred in 1978 when Belimo began producing direct coupled actuators specifically for fire dampers in the European market. This innovation was followed by the development of integrated, reliable actuators designed to operate under extreme fire conditions, leading to the current, technologically advanced models available from companies like Belimo, Honeywell, Barber Colman, and Siemens.
This issue of the Enertech Edge includes information about:
- The Rise of Motorized Actuators (1970s-1990s)
- Modern Era (2000s-Present)
- The Future (2030+)
About
Kent Maune is Senior Product Manager, Life Safety and Control Dampers, for United Enertech. His experience during more than 35 years in the HVAC industry (dampers and louvers) includes engineering, R & D, operations, sales, and extensive experience in the development and marketing of life safety product lines. He has also developed and conducted training seminars for code officials, engineers, fire marshals, architects, and sheet metal contractors on fire/smoke damper installation, options, and variations. Kent is a member of NFPA (National Fire Protection Association) and a chair of CARC (Code Action Review Committee). [email protected]
Special thanks to Mike Knipple for contributing to this article. Mike has decades of experience in the HVAC equipment and building automation industry and currently works as Business Line Manager, Damper Actuators at Belimo Americas. He also serves on the NFPA 80 and 105 Technical Committee (Fire Doors and Windows), as Principle Voting Member by National Fire Protection Association. Belimo is the global market leader in the development, production, and sales of field devices for the energy-efficient control of heating, ventilation, and air-conditioning systems.
February 2026