Heating, Ventilating, and Air-Conditioning 223
Heating (warm air):
boiler
fuel
oil tanks
gauges
accessories
thermostats
wiring
chimney
ducts
diffusers
fans
valves
filters
humidifiers
dehumidifiers
insulation
baffles
Air-Conditioning:
central
units
coolant
fans
piping
diffusers
registers
wiring
ducts
filters
humidifiers
dehumidifiers
inlets
returns
fresh air
louvers
thermostats
Review Questions
- Would electric heat most likely be placed under electri-
cal, plumbing, or HVAC?
- How do the various types of construction affect the cost
of the heating work?
3. Why are subcontractors hired under single contracts to
perform the HVAC work?
