機器
3d illustration
adjusting
appliance
appliances
automatic
boiler
button
central
cold
combi
control
controller
device
dial
digital
display
domestic
efficiency
electric
electricity
electronic
energy
equipment
gas
heat
heater
heating
heating boiler
home
hot
house
household
industrial
industry
natural gas
panel
pipe
system
technology
temperature
thermal
thermostat
warm
water
white