Definitions for "B-Vent"
a gas fireplace that draws air from inside the home through ports in the firebox itself. (also called Natural vent).
One pipe system, uses room air for combustion and exhausts to the outside. For gas appliances only.
a gas-burning appliance that takes in combustion air from the home and vents products of combustion outside the home. B-Vent is also commonly known as Natural Vent.