What is the purpose of a blower?

What is the purpose of a blower depends on context, as blower is a general term for a device that moves air or gas. In HVAC systems, a blower or blower fan in a furnace, air handler, or air conditioner circulates conditioned air through ductwork to rooms, providing heating, cooling, and ventilation, without it air would not move and house would have no comfort. In industrial settings, blowers provide combustion air for furnaces, move materials, or provide ventilation. In home construction diagnostics, a blower door blower is used to pressurize or depressurize a house to measure airtightness and locate air leaks. In automotive, a blower moves air for cabin heating and cooling. In landscaping, a leaf blower moves air to clear debris. In all cases, the purpose is to create airflow to move air, gas, or particles from one place to another for heating, cooling, ventilation, drying, cleaning, or diagnostic testing. For HVAC specifically, the blower motor with fan wheel is essential to distribute conditioned air, maintain proper airflow across heat exchanger and evaporator coil for efficiency, and provide air filtration and humidity control throughout the building.