Gas fireplace flue. Prefabricated fireplaces factory built or prefabricated fireplaces are relative newcomers to the fireplace scene. Besides that fireplace will never heat your home at above 15 efficiency. A fireplace flue damper enables you to control how much air flows up your homes chimney when the fireplace is in use.
Unlike traditional masonry fireplaces most factory built fireplaces are metal and come from the factory as complete units with a firebox a specific chimney system and all miscellaneous parts. First though you choose whether to buy logs that require a vent for the gas byproducts or logs that allow you to burn them without a vent. Adjusting the damper allows you to burn a fire efficiently and safely.
It sounds like you have a wood burning fireplace that was converted to gas. While longevity will depend on the amount or humidity in the flue gases the typical liner can last for 20 to 25 years under normal conditions. You can close the flue when you shut it off to keep the warm house air from going up the chimney or if you have glass doors just leave the flue open all the time and close the doors when off.
Gas fireplaces 101 in the market for a gas fireplace. No one wants to waste heat up the chimney but a certain amount of heat is necessary in order to provide the draft that makes the venting system work and to keep the chimney walls warm enough to prevent condensation of the flue gases. Vent free is a marketing slogan it vents into the room you are in filling the air with sweet sweet combustion productssarcasm also that looks like a vented log set anyway so open the flue.
Otherwise the carbon monoxide will get you. Sealing a fireplace flue in this manner can also reduce or eliminate soot odors that are prone to travel into the house during windy or stormy days. Flue firebox and in many cases floor supports to accommodate the weight of the hearthtodays options are not only affordable but.
Of course the blocking material must be removed before a fire is started. Fireplaces with installed gas logs are required to have the damper open at all times.