機器
air
aircondition
appliance
clean
cleaner
cleaning
coil
cold
condition
conditioner
conditioning
cool
dirty
dust
dusty
electric
electrician
equipment
filter
fix
fixing
hand
home
hot
house
indoor
installation
installing
job
maintenance
man
professional
purifier
remove
repair
repairing
replace
replacement
service
system
technician
temperature
unhealthy
ventilator
wash
washing
work
worker
working