Maintenance Technician 2025 Complete Practice Test

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In terms of HVAC systems, what is the function of a thermostat?

To filter air particles

To regulate temperature

The function of a thermostat in HVAC systems is fundamentally to regulate temperature. It does this by monitoring the temperature of the air in a specific area and making adjustments to the heating or cooling systems based on the desired temperature set by the user. When the temperature rises above or drops below the setpoint, the thermostat signals the HVAC system to activate or deactivate the heating or cooling elements, thus maintaining a consistent and comfortable environment.

This essential role allows for energy efficiency and comfort within a space, ensuring that the interior climate responds appropriately to changes in outdoor temperature or occupant preferences. While other components of an HVAC system may deal with air filtration, humidity measurement, or airflow management, the primary and distinctive role of a thermostat is the regulation of temperature.

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To measure humidity

To maintain airflow

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