Fire and Smoke Dampers: What They Are and Where Fire Code Requires Them
Fire dampers and smoke dampers close automatically at fire-rated penetrations, but they're not the same thing. What each does, real specs, and how to specify them, for MEP consultants and contractors.
A fire damper is a duct-mounted device that stays open during normal HVAC operation and closes automatically when it detects heat at a fire-rated wall or floor penetration, containing the spread of fire through the ductwork. A smoke damper works on a similar principle but closes in response to smoke detection, usually tied into the building's fire alarm system. Goodwind manufactures both to order in aluminum, galvanized steel, or stainless steel, sized to the duct dimensions.
Fire Damper vs Smoke Damper
Both sit inside the same duct run and look similar from the outside, but they respond to different triggers and serve different code requirements.
| Product | Function | Material Options | Size |
|---|---|---|---|
| Fire Damper | Closes automatically to contain fire spread at fire-rated penetrations | Aluminum, galvanized steel, stainless steel | Customizable to duct dimensions |
| Smoke Damper | Closes automatically to control smoke spread | Aluminum, galvanized steel, stainless steel | Customizable to duct dimensions |
Both types are also part of Goodwind's wider damper range, which is designed to minimize turbulence and noise across all type options, alongside volume control dampers used for everyday airflow regulation rather than life-safety shutoff.
Where Fire and Smoke Dampers Are Required
Fire and smoke dampers are installed at fire-rated wall or floor penetrations, where local fire code requires the duct penetration to be protected. Whether a location needs a fire damper, a smoke damper, or both depends on the building's fire strategy and local code, not on airflow requirements. That's a decision for the project's fire consultant or authority having jurisdiction, reflected on the fire-rated wall/floor schedule.
How to Specify Fire and Smoke Dampers
For MEP Consultants at the Design Stage
Cross-check the fire-rated penetration schedule against the ductwork layout early, since retrofitting a damper into a wall that's already been fire-stopped is disruptive and costly. Confirm with the fire consultant which penetrations need a fire damper, a smoke damper, or a combination unit, and note it clearly on the drawings so it doesn't get value-engineered out later.
For Contractors at Procurement Stage
Because fire and smoke dampers look alike and both get lumped in with general ductwork on a materials list, confirm which type each location calls for before ordering. Since these are built to order rather than stocked in fixed sizes, submit exact duct dimensions for each opening rather than rounding to the nearest standard size.
FAQ
What's the difference between a fire damper and a smoke damper?
A fire damper closes automatically when it detects heat at a fire-rated penetration, to contain fire spread through the ductwork. A smoke damper closes in response to smoke detection, usually tied into the building's fire alarm system, to control smoke spread.
Where are fire dampers required?
At fire-rated wall or floor penetrations, as determined by the building's fire strategy and local fire code.
Are fire and smoke dampers the same as volume control dampers?
No. A volume control damper regulates airflow during normal operation. Fire and smoke dampers stay open during normal operation and close automatically for life-safety reasons.
What materials are fire and smoke dampers made from?
Aluminum, galvanized steel, or stainless steel, built to the duct dimensions you provide.
Working out which penetrations need protection? Contact Goodwind for technical input on fire and smoke dampers, or see our volume control damper guide for everyday airflow regulation.