What is the primary purpose of a gas furnace?

The primary purpose of a gas furnace is to provide heating for residential and commercial spaces. Gas furnaces are specifically designed to burn natural gas or propane to produce heat, which is then distributed throughout a building to maintain a comfortable temperature, particularly during colder months. They facilitate efficient heating through a system of ducts, radiators, or hot water systems, making them essential for maintaining thermal comfort in living and work environments.

Given this, choices related to cooling, ventilation, or electricity generation do not align with the fundamental function of a gas furnace. Cooling systems, such as air conditioners, are responsible for cooling spaces, while ventilation systems focus on air circulation and quality without necessarily providing heating. Generating electricity is unrelated to the specific operation of a gas furnace, as that function is typically performed by other types of equipment such as generators or solar panels.