Close
AFUE
damper:
HVAC Duct system
damper:
barometric
direct exhaust appliance
direct vent appliance
forced draft
induced draft
mechanical draft
natural draft
stack effect
flue
hydronic heating
mainfold vent connector
combustion vent
vent connector
vent system
flue collar
combustion air
primary air
dilution air
net free area
standard method
gas appliance
inside air
adjacent rooms
gas appliance
inside air
different stories
gas appliance
combustion air same room
oil furnace
inside air adjacent rooms
openings
oil furnace
