What is a furnace blower commonly referred to as?

The term "squirrel cage" refers to the design of a type of fan commonly used in furnace blowers. This design features a cylindrical shape with blades arranged in a manner that resembles a hamster or squirrel running on a wheel, hence the name. Squirrel cage blowers are known for their efficient airflow capabilities and are capable of moving large volumes of air at relatively low pressure, making them ideal for heating and cooling systems.

In the context of a furnace, the blower plays a critical role in circulating warm air throughout a space, ensuring even heat distribution. This is a vital function for maintaining comfortable indoor temperatures during colder months. Understanding the function and design of the blower helps technicians and safety professionals recognize potential issues in furnace operation and maintenance.

Other terms in the options, such as "induction fan" or "combustion exhauster," refer to different types of fans with specific roles in various applications. An air circulator is not typically associated with the specific functionality of a furnace blower, which is focused on delivering heated air from the furnace throughout the living space.