機器
adjusting
appliance
boiler
button
central
cold
control
costs
dial
display
domestic
economizing
economy
efficiency
electrical
electronic
energy
finger
fire
gas
hand
handle
heat
heating
home
hot
house
indoor
industry
measurement
panel
pressure
price
pump
reducing
regulator
room
save
season
smart
system
technology
temperature
thermal
thermostat
turn
turn on
warm
water