Upgrade a boiler or furnace with a vent damper
Explanation
Reduce the amount of heat that goes up the chimney.
Adding a vent damper to a boiler or furnace is an easy way to cut energy losses. The damper prevents heated air from being pulled into the flue when the heating appliance is not running. When there's a demand for heat and the furnace or boiler starts to run, the damper opens to improve draw.
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