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Direct Vent Gas Fireplaces – most are vented to the outdoors horizontally directly through the wall, but they can also be routed vertically through the roof. Fireplace Inserts – most are vented vertically through the roof, via the existing chimney. Electric Fireplaces – no venting is required.
Simply so, do gas fireplaces need to be vented?
Ventless fireplaces fueled by gas or propane rely on indoor air for combustion, and they exhaust a low level of their combustion gases into the room in which they're located. A chimney or flue isn't necessary. In fact, ventless fireplaces generally are just for aesthetics and supplemental space heating.
Subsequently, one may also ask, how does a vented gas fireplace work?
Direct Vent Gas Fireplace Vent Pipe The outer pipe draws air in from the outside to create combustion for burning the gas while the inner pipe takes waste to the outside. Direct venting is considered a safe system because no air from inside is used in combustion and all wastes flow to the outside.
Vented logs operate more closely to a real wood fire, than do Vent Free. Vented gas logs must be operated with the damper fully open on a wood-burning fireplace, either masonry with a flu and chimney or a prefabricated firebox with vent pipe. Vent Free logs, also burn less gas than do the Vented gas logs.