Certified Facility Manager (CFM) Practice Exam

What is the primary function of a thermostat?

1. To filter air impurities

2. To sense the temperature and control HVAC operation

3. To circulate air in the room

4. To measure humidity levels

The correct answer is: To sense the temperature and control HVAC operation

The primary function of a thermostat is to sense the temperature and control HVAC operation. This device plays a crucial role in heating, ventilation, and air conditioning systems by continuously monitoring the ambient temperature within a space. When the temperature deviates from the setpoint that the user has programmed, the thermostat signals the HVAC system to either heat or cool the environment accordingly. This process maintains comfort levels while also improving energy efficiency by ensuring that the system only operates when necessary. The ability to sense temperature accurately and make real-time adjustments is key to its role in facility management, allowing for better climate control and resource management within a building. A well-functioning thermostat not only enhances occupant comfort but also contributes to reduced energy consumption and costs.