The operation of electric resistance heaters to heat an area for a long period of time is generally considered to be costly.

An electric resistance heater has a thermal efficiency close to 100%.

Induction coils, ring-wound resistance heaters, or gas flames are common methods.

The private was heating a cup of soup with a resistance heater.

Electrical resistance heaters have been found to work well, but these have potential safety problems.

Some systems use electric resistance heaters instead of a heat transfer media and may employ a single auger in each housing.

Millions of houses use resistance heaters, but they are generally far more expensive to operate than the alternatives: natural gas, heating oil or propane.

Hence, even electric resistance heaters may be used.

When operated in heating mode, a heat pump is typically more efficient than a resistance heater.

To solve this problem you could preheat your car's converter with an electric resistance heater.