A fire place gives warmth
for a room during winter. A traditional fireplace
heats by radiation. Radiant heat from the fire warms
objects in a room but not the air. Heat is retained
by the walls of the fireplace and released slowly
into the room. Of course for a fire, a house needs
a fireplace that will safely contain it, encourage
the fuel to burn, exhaust smoke and provide warmth
to the room. A zero-clearance fireplace, prefabricated
from metal, is installed in a wood-frame wall. Fresh
combustion air is brought inside from outdoors through
a duct. Room air will be warmed as it circulates
through a heat exchanger and is blown back into
the room. A metal double- or triple-wall chimney
carries smoke and combustion gasses up out of the
roof.