NATE Air Conditioning and Heat Pumps Practice Exam 2026 – All-in-One Guide to Master Your Certification!

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What is the function of an air handler in a heat pump system?

To heat water for the system

To circulate conditioned air using a blower fan

In a heat pump system, the air handler's primary function is to circulate conditioned air throughout the living space using a blower fan. This essential component receives the heated or cooled air that has been conditioned by the heat pump and distributes it through the ductwork, ensuring that the desired temperature is maintained in the indoor environment.

The air handler often contains a filter to help remove particulates from the air, but its main role focuses on air circulation. By efficiently moving air, the air handler enhances the overall comfort level in the building and contributes to the system's effectiveness in heating or cooling spaces as needed, depending on the season.

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To control the entire refrigeration cycle

To filter air before distribution

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