Which term describes the general group of using electricity for comfort heating?

The term that describes the general group of using electricity for comfort heating is most appropriately categorized as indirect heating. This method encompasses various systems that do not directly heat the air in a space but rather transfer heat through other mediums, such as surfaces or water, before it warms the air.

In indirect heating, electricity may be used to heat water that circulates through radiators, or it could involve heating a surface that then radiates warmth into the room. This technique can often be more efficient and comfortable as it tends to produce a more even and consistent temperature throughout the space.

While direct heating refers to electric devices like space heaters that generate heat directly in the room, central heating involves a more extensive system that can utilize various fuel sources, not just electricity. Radiant heating specifically focuses on warm surfaces to provide comfort directly, which is a category within indirect heating but does not encompass the broader range of electrically powered options. Thus, indirect heating is the most fitting term for the general use of electricity in this context.