Should Gas Fire Glass Doors Be Open Or Closed

Closing the doors while your fire is burning can create a fire hazard and the tempered glass door is not meant to withstand such heat.

Should gas fire glass doors be open or closed. First open the flue. The glass can shatter sending hot shards of glass into the room. When burning gas logs in a wood burning fireplace the glass doors should always be fully open when the gas logs are burning. If you close the doors the flames pull towards the glass where it can impinge and shatter the glass.

It is still an open hearth fireplace which is susceptible to aerodynamics. Make sure anything that can burn. Additionally it defeats the purpose of a fire heating your room as all the heat will go straight up your chimney not into your room. When the gas logs are in use the chimney damper must be in the full open position allowing 100 of the exhaust carbon dioxide and water to be directed up the flue and out of the house.

Therefore the more air that reaches the fire the better the combustion and the warmer your home will be. That is why we do not recommend closing the glass doors on a fireplace while there is a fire. If your fireplace doors are shut oxygen cannot reach the flames. Build a fire with dry seasoned firewood and kindling or fire starter bricks then close the metal mesh screen but leave the glass doors open.

Doors can only be closed if there is no fire burning. Tempered glass fireplace doors should remain open when a fire is burning. Open no glass doors like isokern or firerock with add on gas burning unit fake ceramic logs. Large 10 class a metal chimney required hefty 1000 lbs of masonry firebox unsealed good radiant heat and open to the room no fans or accessory heat ducts.

Even more important is to leave the glass doors closed and the air shutters closed in between uses of the fireplace to minimize the loss of heated room air when the fireplace is not being used. Fireplace doors should always be kept open while a fire is burning. Glass doors should be fully open when starting a fire and when the fire is burning strongly. If your fire isn t dying down you shouldn t close the doors.

The glass doors should be closed as the fire dies down to minimize the amount of room air going up the fireplace chimney. This results in a dull blaze with little heat output. It also elevates the temperature of the firebox and flue by greatly reducing the volume of air moving through the venting system. Because of the damper position requirement the use of masonry fireplace glass doors is required with a vented gas log setup.