機器
air
appliance
background
blade
building
circle
climate
cold
commercial
compressor
condition
conditioner
conditioning
construction
control
cool
cooler
cooling
decoration
duct
electric
engine
equipment
exhaust
fan
heat
hot
hvac
industrial
industry
machinery
metal
motor
pipes
power
roof
rooftop
splitter
steel
system
technology
temperature
turbine
unit
vent
ventilation
ventilator
white
wind