What Is The Vent On The Outside Of My Fireplace For? Explained!
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Should The Vent On My Fireplace Be Open Or Closed?
One common question homeowners often have is whether they should keep the vent on their fireplace open or closed. The answer to this depends on whether you’re using the fireplace or not.
When you’re not using your fireplace, it’s essential to keep the vent closed. This is important to prevent the loss of heated or cooled air from inside your home. Keeping the damper closed also serves to block cold drafts from entering your home through the chimney.
Conversely, when you’re enjoying a cozy fire, you should have the vent open. This allows the smoke and gases produced by the fire to escape safely through the chimney, ensuring a pleasant and safe indoor environment. So, knowing when to open or close your fireplace vent is crucial for maintaining a comfortable and efficient home heating system.
Does A Fireplace Need A Fresh Air Vent?
Is it necessary for a fireplace to have a fresh air vent? Yes, both factory-built fireplaces and masonry fireplaces benefit from having an external air supply to ensure efficient fuel combustion. This requirement holds true, especially when the room lacks mechanical ventilation and control, causing indoor air pressure to become either neutral or positive. In such cases, an exterior air supply becomes crucial for optimal fireplace performance.
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One draws fresh outdoor air into the sealed firebox for combustion, while another expels the fire’s combustion exhaust, gases, and by-products outside. Cool indoor air is drawn into the lower chamber, circulates around the firebox, and is released as warm air into the room with a fan.When you aren’t using your fireplace, it should be closed to prevent heated and cooled air in your home from escaping. A closed damper also stops cold drafts from coming down the chimney. When you are using your fireplace, it needs to be open so that smoke can vent outside.Factory-built or masonry fireplaces should be equipped with an exterior air supply to assure proper fuel combustion unless the room is mechanically ventilated and controlled so that the indoor pressure is neutral or positive.
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