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NO. a flue should never be closed when a fire is lit. It is the way poisonous gases like carbon monoxide are taken out of a room,hallway or any enclosed space. flues can be closed only when a fire is not being used,to keep out draughts on windy days.

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15y ago

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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.


What is a vented fireplace?

Usually refers to a gas fireplace, since wood fireplaces are vented by the flue (chimney) Gas fireplaces can be vented (flue) or unvented (no flue)


Can you spray this inside a gas fireplace for wasps before using the fireplace?

Well, we don't know what IT is- you did not share that with us. However, many spray insecticides are combustible- they can burn. IF you used an insect spray in a fireplace, you should wait several hours before lighting a fire, and give the flue time to air out. Or you may get a large KAWHOOF when lighting the fire. Be sure that a large wasp or hornet nest has not blocked the flue.


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?


Can a gas fireplace and a furnace share a chimney?

If both fireplace and furnace are BOTH gas, if the flue has the correct size, AND if your building code permits, yes. If furnace and fireplace are different fuels, no. Check with your local building inspection department.


Can you convert a regular metal fireplace into a ventless if you close the flue and layer refractory cement to seal the chimney?

If you mean a ventless GAS fireplace, I would urge you to check with your local building inspector. Those have a specific design so that you do not die from carbon monoxide, and there is more than just sealing the flue. If you mean to burn solid fuel (wood, coal), NO.


Why does my gas fireplace shut off unexpectedly?

Your gas fireplace may shut off unexpectedly due to issues such as a dirty or faulty thermocouple, a blocked flue or vent, low gas pressure, or a malfunctioning gas valve. It is important to have a professional inspect and repair the fireplace to ensure safe and proper operation.


What is the meaning of flue gas?

Flue gas refers to the gases that are emitted as byproducts from combustion processes, such as in power plants, furnaces, and vehicles. These gases typically include carbon dioxide, water vapor, nitrogen oxides, sulfur dioxide, and particulate matter, and can have environmental impacts if not properly treated before release into the atmosphere.


How do you light a gas fireplace using a key?

To light a gas fireplace using a key, first locate the gas valve key near the fireplace. Insert the key into the gas valve and turn it to the "on" position. Then, use a long lighter or match to ignite the gas at the burner. Be sure to follow the manufacturer's instructions and safety guidelines when lighting the gas fireplace.


Why does your natural gas fireplace turn off?

A natural gas fireplace can turn off due to reasons such as a blocked flue, malfunctioning thermocouple, or low gas pressure. It is important to have a professional technician inspect and troubleshoot the fireplace to identify and fix the issue.