Nate Core Practice Test

Question: 1 / 400

What is the primary function of a variable speed blower?

To provide a constant airflow

To adjust airflow based on heating or cooling needs

The primary function of a variable speed blower is to adjust airflow based on heating or cooling needs. This type of blower is designed to change its speed according to the demands of the environment, which allows for more efficient temperature regulation. By matching the airflow to the specific requirements of the space, a variable speed blower enhances energy efficiency, improves comfort levels, and reduces wear and tear on the HVAC system. This ability to modulate airflow also leads to a more consistent temperature throughout the building and can contribute to lower energy bills by reducing unnecessary energy use.

In contrast, options that imply constant airflow or limiting air circulation are not true of variable speed blowers, as their main benefit lies in their adaptability and efficiency in responding to varying heating or cooling demands.

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To limit air circulation in a room

To increase the noise level of the system

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