燃やす
air
appliance
background
black
boil
boiler
burner
circle
climate
comfort
convenience
device
domestic
electric
energy
equipment
furnace
gas
heat
heater
home
hot
house
household
icon
illustration
indicator
industry
installation
isolated
metal
object
pipe
single
stencil
symbol
tank
tankless
temp
temperature
thermal
thermodynamic
thin
water
white