Furnaces are the top type of heating system in the country. The majority of furnaces use natural gas to create heat, although they draw on electricity to power the blower fan and the ignition system. (Which means that, sorry, your gas furnace won’t work during a power outage.)
Since not all homes are connected to a gas main, the second most common type of furnace is the electric furnace. Because electricity costs more than natural gas, electric furnaces are more expensive to run. This is somewhat offset by their lower initial installation costs, longer lifespans, and fewer repair needs.
The fireplace is the oldest type of heating system that’s still in use. Fireplaces developed in the Middle Ages inside drafty castles because they allowed for the better direction of heat than the large central fires that buildings once used. The fireplace also created radiant heat of the bricks and stones around them, adding further warmth to a space.
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