Direct vent appliances are typically higher in efficiency than b vent appliances and put out a lot of heat even with a low flame setting but still do not produce as much heat as their vent free counterparts.
B vent fireplace vs direct vent.
Natural vent or b vent gas fireplaces and stoves use the air that is already contained inside of a room for combustion.
Even the vent pipes are almost the same.
Direct vent is much more efficient you re pulling fresh air from outside of the house.
Gas vent fireplaces exhaust their fumes through the roof via a pipe.
Because the design of a b vent system is simple it is typically less expensive to install than a direct vent fireplace system.
Direct fireplaces have a sealed glass front and typically a smaller flame than a b vent fireplace or a vent free fireplace.
Well visually some people prefer b vent units because their open they have access to a lot of oxygen and you can generally get a nice big visual flame but you can also get a nice flame on a direct vent.
Vented fireplaces are further divided into two subcategories natural vent and direct vent.
Natural vent models resemble conventional wood burning fireplaces.
Direct fireplaces have a sealed glass front and typically a smaller flame than a b vent fireplace or a vent free fireplace.
Direct vent appliances are typically higher in efficiency than b vent appliances and put out a lot of heat even with a low flame setting.
Direct vent systems use indoor air for combustion.
The b vent pipes used in natural vent fireplaces are however smaller than the a class chimneys used in traditional wood stoves.
A b vent must be vented vertically and uses fresh air from inside the home to provide oxygen to the fire.
A direct vent has a sealed glass front and pulls all of its fresh air from outside the home.
This makes b vents an optimum choice for small rooms since the energy output of a direct vent fireplace can overwhelm a small space.
If you desire a realistic looking flame a b vent may be a good choice for you.
In general b vents do produce less heat than direct vent models.