Every time the weather got cold outside, other residents in the complex cranked their heaters up and then he had to adjust his own thermostat.
On electric railways the trains are heated by electric heaters.
Modern heaters may also be fitted with safety devices, for instance a tip over - cut out switch.
There are also auxiliary electric wall heaters in every room.
Cooking ranges, heaters, and charcoal grills also produce carbon monoxide.
