What is the difference between vented and ventless/ventfree gas logs?
Vented gas logs still require the chimney to vent the fumes and carbon monoxide out of the home. Along with that goes about 50%-60% of the heat and is just about as efficient as a wood burning fire. Vented gas logs can be put into just about any fireplace. Traditionally vented gas log are a little more realistic looking than ventless/ventfree. Ventless/ventfree gas logs are basically a space heater that is designed to look like logs and be installed into a fireplace. They are about 99% efficient because the damper is partially or totally closed. They are normally installed into masonry and manufactured/prefab fireplaces. However, some manufactured/prefab fireplace manufacturers do not recommend ventless/ventfree logs in their fireplace either because the fireplace was not tested for that appliance or the fireplace cannot handle the heat buildup. Clean Sweep Chimney Service doesn’t recommend ventless/ventfree gas logs to be installed into masonry or manufactured/prefab fireplaces unless
