Fire & Smoke Dampers
What Are Fire & Smoke Dampers?
Fire and smoke dampers are essential passive fire protection devices installed within HVAC ducts to prevent the spread of flames and smoke through fire-rated barriers. When triggered by heat or smoke, these dampers automatically close, sealing off duct openings and helping to maintain the fire-resistance integrity of the wall or floor.
They are typically used in systems where airflow must be maintained under normal conditions, but shut-off is required during a fire to contain the spread between compartments.
At HALT FIRE, we supply and install fire and smoke dampers that are fully compliant with AS 1682, NZS 4541, and New Zealand Building Code Clause C3. We ensure every installation is backed by proper QA documentation, functional testing, and sign-off for BWOF compliance.
Why Use Fire and Smoke Dampers?
Fire and smoke dampers are typically required where HVAC systems or ventilation ducts pass through fire-rated walls or floors. They serve to:
- Automatically close during a fire to contain heat and smoke
- Maintain passive fire separation between building compartments
- Support Building Warrant of Fitness and inspection requirements
- Prevent smoke from spreading to escape paths and occupied zones
These systems are essential in places such as stairwells, corridors, plant rooms, and between tenancy units in multi-level commercial buildings.
Common Applications
Fire and smoke dampers are most commonly installed in:
- HVAC ducts penetrating fire-rated walls and floors
- Stairwell pressurisation and smoke control systems
- Return and supply air shafts in commercial buildings
- Multi-storey residential and office blocks with compartmentation
- Mixed-use buildings requiring inter-tenancy separation
📍 Servicing Auckland, Northland & North Waikato
Need fire and smoke dampers installed, replaced, or tested?
HALT FIRE supplies, installs, and services fire and smoke dampers to ensure compliance and reliable operation across HVAC and mechanical systems in commercial buildings.
Get in touch for passive fire damper solutions, pricing, and documentation support.