Furnace

A furnace is responsible for heating the air that is circulated throughout a building. In addition to providing warmth, modern furnaces often include features for improved energy efficiency and air filtration, enhancing overall indoor air quality.

How it works: It works by burning fuel (such as natural gas, oil, or propane) or using electricity to produce heat. The heated air is then distributed via ducts to maintain a comfortable indoor temperature during colder months.