VENT & FLUE DAMPERS
SEAL OFF THE STACK WHEN IT’S NOT IN USE
After a heating system shuts off, warm air can continue to escape through the flue—wasting energy and pulling unconditioned air into the home. Vent and flue dampers automatically close off the vent path during standby to help retain heated air and prevent draft-related energy loss.
Field Controls dampers are built to work seamlessly with gas and oil systems, offering automatic operation, low power draw, and durable construction that stands up to years of heating cycles.
WHY USE A VENT OR FLUE DAMPER
Prevents Standby Heat Loss
Automatically closes after burner shutdown to keep residual heat from escaping up the stack.
Improves System Efficiency
Reduces unnecessary fuel consumption by helping systems retain heat between cycles.
Supports Stable Draft on Startup
By holding back cold outdoor air until ignition, dampers help burners ignite more smoothly and consistently.
Enhances Safety
Some models include built-in safety switches that verify damper position before allowing ignition.
HOW IT WORKS
When the burner is off, the damper remains closed, preventing airflow through the flue. On a call for heat, the damper motor opens the blade, allowing combustion gases to vent. Once the cycle ends, the damper closes again—minimizing warm air loss.
Field Controls dampers are available in motorized or passive configurations, depending on system needs. They install in the vent pipe or flue and operate silently in the background.
OUR VENT & FLUE DAMPER PRODUCTS
OTHER COMBUSTION TECHNOLOGIES
Field Controls Learning Library
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