Pressure Relief Dampers
Maximize System Longevity and Performance
Pressure relief dampers, also known as barometric dampers, manage and relieve excess pressure in zoned duct systems. In systems with multiple zones, fluctuations in air pressure can lead to potential damage to HVAC equipment.Â
FAMCO pressure relief dampers are available in galvanized steel.
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HVAC Dampers
Pressure Relief / Barometric Damper
$159.95 – $334.95 Select options This product has multiple variants. The options may be chosen on the product pageRated 4.50 out of 5
Technical Information
FAMCO Pressure Relief Dampers Benefits



Residential Use:
Essential for maintaining consistent pressure in multi-story homes.
Commercial Use:
Designed for systems with multiple zones, where varying airflows could lead to pressure imbalances that affect the operation of the entire system.
Pressure Relief/Barometric Damper:
Commonly used to relieve built-up pressure in zoned duct systems. The sliding weight can be adjusted to open when a certain pressure is reached, ensuring optimal ventilation.
Proper Placement:
Install pressure relief dampers where pressure build-up is likely to occur. These dampers are manually set to automate airflow management.
Vent Selection:
Choose dampers based on climate and specific ventilation needs.Â
Professional Installation:
While some dampers may be installed by DIYers, professional installation is recommended for complex systems or areas with challenging access.
Frequently Asked Questions
Pressure relief dampers regulate and control the pressure within an HVAC system. These dampers open when the internal pressure of the system exceeds a preset threshold, allowing air to escape and balancing the pressure within the ductwork.
When choosing the right pressure relief damper, determine the maximum pressure the system will generate and select a damper rated for that pressure. The damper should open when the pressure exceeds the system’s designed threshold.
FAMCO provides a one-year warranty for our pressure relief dampers, which includes coverage for manufacturing defects. If you experience any issues or defects with the dampers, contact our customer support team for assistance.