How Important are Fire Dampers?

"Fire dampers are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent the spread of fire inside the ductwork through fire-resistance rated walls and floors. 

Fire dampers prevent the spread of flames inside the ducts. When a rise in temperature occurs, the fire damper closes, usually activated by a thermal element which melts at temperatures higher than ambient but low enough to indicate the presence of a fire, allowing springs to close the damper blades. Fire dampers can also close following receipt of an electrical signal from a fire alarm system, indicating the sensing of heat or smoke in the building occupied spaces or in the HVAC duct system."


Fire Dampers are key to preventing the spread of flames throughout the ductwork, one of the easiest areas that fuels fires with oxygen to keep burning and spreading throughout a building.

Regular cleans of ductwork is the best way to maintain ductwork and keep dirt, like grease, which can catch fire easily from hot embers entering the system from a commercial kitchen. But, regular testing of fire dampers is key to isolating and preventing these fires from spreading, should the situation occur between maintenance.

Unclean ductwork is one of the main causes of commercial kitchen fires, costing businesses huge amounts, not only in remedial works, but also closing or stopping business/products relying on kitchen service, which bring in revenue.

Talk to us to find out more about how you can protect yourself and maintain a healthy ductwork system, with regular fire damper assessments and testing. Call 0333 500 8368 or email us.

Posted on January 19, 2015 and filed under Information, Risk & Consequence.