electric heater

US /ɪˈlɛktrɪk ˈhiːtər/
UK /ɪˈlɛktrɪk ˈhiːtər/
"electric heater" picture
1.

a device that converts electric current into heat, used for heating rooms or water

:
We bought an electric heater for the chilly evenings.
The old electric heater was not very efficient.