Furnace

Definition

A furnace is a unit that draws in cool air from an occupied space, passes the air through a heating chamber (combustion or electric), and then returns the heated air to the occupied space. It is a heating system that uses air as the distribution fluid.

Purpose

The purpose of a furnace is to provide a controlled source of heat for residential or commercial buildings, ensuring comfort by maintaining a warm indoor temperature.

Examples of Use

• Residential homes commonly use gas or electric furnaces to heat living spaces during cold weather.
• Commercial buildings may use large-scale furnaces connected to ductwork to distribute warm air throughout the facility.

Related Terms

• Boiler: A heating system that uses water or steam to distribute heat.
• Heat Pump: A device that transfers heat from a cooler space to a warmer space, the opposite of a furnace.
• HVAC (Heating, Ventilation, and Air Conditioning): Systems that provide heating, cooling, and air quality control.

Notes

Regular maintenance of furnaces, including filter changes and inspections, is essential for efficient operation and safety. Proper installation and ventilation are also crucial to prevent hazards such as carbon monoxide leaks.