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Natural Vent Fireplaces

B-vent or natural vent fireplaces use air from inside your home to fuel combustion and rely on the buoyancy of hot gases to vent exhaust through dedicated pipe systems. This simple design makes them cheaper and easier to install than direct vent models, but they are much less efficient. You'll want to carefully consider your budget and heating needs before deciding whether a natural vent fireplace is right for you. Once you've done that, though, and determined that a Natural Vent Fireplace is the right choice for your home, you're sure to find a model to suit your needs right here in this section.

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ASK & ANSWER
By Mike from Harrisburg, PA on January 2, 2013
How is a "natural vent" fireplace different than vent-free? Is there an odor with vent-free fireplaces / fireboxes? Is it safe to use a thermostat with all vent-free fireplaces?
By Customer Service on January 2, 2013

Answer:
B-Vent pipe is usually smaller in diameter than Class A chimney pipe (used for wood-burning/coal-burning hearth appliances), and it is much cheaper. However, B-Vent fireplaces and stoves have very poor efficiency ratings. As with a traditional wood-burning fireplace, B-Vent units are open and use the air from the room for combustion. As a result, you will lose a lot of heat up your flue or chimney as the exhaust travels out of the home, so don't expect to use these as a reliable heat source.

Vent-free appliances can present a nuisance because the smell of the burning gas is bothersome to some people. It depends on how sensitive the occupants are to odors. It is indeed safe to use a thermostat with vent-free fireplaces that are able to accept a thermostat.

By Customer Service on January 2, 2013

Answer:
Natural vent (B-Vent) fireplaces use the air from the room for combustion. The byproducts and majority of the heat will travel up your flue or chimney as the exhaust travels out of the home. You shouldn't expect to be able to use these as a reliable heat source.

The difference with vent free units is that the exhaust from combustion and the heat are going to stay in the room, since they have nowhere else to go. Some people do notice an odor with vent-free fireplaces / fireboxes. It is safe to use a thermostat with a vent-free appliance.