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If you do not close it then you basically have a hole in your roof that is sucking out all the warm air. This will lead to even higher heating and cooling costs.

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15y ago

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How do you properly close a fireplace flue?

To properly close a fireplace flue, you should make sure the damper is fully closed and secure. This helps prevent heat loss and drafts when the fireplace is not in use.


Should the damper be opened or close when operating the fireplace?

the flue should be opened


Should you close your flue when using a gas fireplace?

No. The flue must be open to allow the carbon monoxide to escape from the house.


Should you close flue when gas fireplace not in use?

Yes- but open before use.


When is a Fireplace flue open?

When the fire is burning, until the ashes are cold. The damper should be open at these times.


Can you partially close fireplace flue when a fire is burning in fireplace?

You have to, or the fire is going to burn way too hot and not last very long. Depends on the type of wood you use also.


What should the fireplace flue's position be when the fire is lit?

It needs to be open when lighting a fire. Close it when not in use. If you have any doubt which is which, look up the flue with a flashlight.


Do I open the flue for a gas fireplace?

When burning the firplace, flue must be open to avoid death/ illness from carbon monoxide.


Do you loose heat in a gas fireplace when the flue is open?

Is this an insert into a previous wood burning fireplace? Direct vent or vent free? BTUs?


Should you close the flue to the fireplace to keep the humidity out of the house?

The purpose of the fireplace damper is to keep the outside elements, outside. The damper is opened only when there is a fire in the fireplace.


Should you close fireplace flue during a tornado?

It is not recommended to close the fireplace flue during a tornado. Doing so can lead to increased pressure inside the house, which may cause structural damage. It is best to keep the flue open to prevent any potential issues.


Does burning paper and cardboard harm the fireplace flue?

Burning paper and cardboard can potentially harm the fireplace flue as they produce a large amount of creosote, which can build up and eventually cause a chimney fire. It's recommended to limit burning paper and cardboard to avoid damaging the flue. Regular cleaning and maintenance of the fireplace and flue can help prevent any issues.