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Flues can be opened and closed. Leaving them open too wide will draw the warm inside air up the chimney, wasting heat and making the room colder.
Vents (boilers), Breeching (water heaters and modern furnaces)
Chimney Cleaning Cost
Electric Fired Boiler System Cost
HVAC Inspection Cost
Home Air Sealing Cost
Home Inspection Cost
Oil Boiler Cost
Propane Gas Boiler Cost
Wood vs Gas Fireplace Cost
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