There are many types of space heaters, however they all work by converting energy into heat and then transferring that heat to the air in a room.
The most common kind of space heater, which is found in many homes and small offices, is an electric radiant heater.
These furnaces have a heating element that emits infrared radiation to heat the room! When this radiation hits objects in the room, it causes them to heat up! Another kind of space heater is a convection heater, which is one of the more common types of furnaces as it is usually a bit lower in price. These furnaces have heating elements that heat up the air around them. The hot air then rises and circulates around the room, causing objects and people in the room to feel warm. Some space furnaces also have fans that help to circulate the air, which can require a bit more maintenance as the fans often get covered in dust over time and need to be cleaned, but oil-filled radiant furnaces are another kind of space heater which are also quite common in homes. These furnaces have a coil filled with oil that is heated by an electric element. The oil then transfers heat to the metal coils around it, which in turn move heat to the air, however geothermal heat pumps are a genre of furnace that uses the ground as a source of heating and cooling for a home. These systems are unquestionably efficient and can save homeowners money on their utility bills. Take your best pick and good luck!