機器
ac
air
appliance
background
black
building
cassette
ceiling
climate
cold
commercial
compressor
condenser
condition
conditioner
conditioning
construction
control
cool
coolant
cooler
cooling
electric
electrical
electricity
energy
equipment
fan
heat
home
hvac
industrial
industry
metal
modern
office
outside
pipe
power
pump
repair
steel
system
technology
temperature
type
unit
ventilation
wall