What type of heating system is characterized as 'Central gas-fired forced hot air'?

The term 'central gas-fired forced hot air' specifically refers to a type of heating system that utilizes gas as its fuel source and circulates heated air throughout a building via ductwork. This method involves a furnace that heats the air, which is then distributed through various rooms by a fan or blower.

Forced air heating is designed to rapidly warm spaces, making it a popular choice in many residential and commercial properties. The system’s ability to incorporate air filters and central cooling systems makes it versatile, allowing for year-round climate control.

In contrast, radiant heating involves warming surfaces such as floors or walls directly, electric heating relies on electric resistance to produce heat, and geothermal heating uses the earth's stable underground temperatures for heating and cooling. Each of these systems operates on different principles and mechanisms, which distinguishes them from forced air heating.