A HVAC thermostat is a device that is used to control the temperature of a home or business. It works by sensing the temperature of the air in the space and then adjusting the heating or cooling system accordingly. This allows for a comfortable environment that is tailored to the needs of the occupants. The thermostat can be set to a specific temperature, or it can be programmed to automatically adjust the temperature at certain times of the day. This makes it easy to maintain a comfortable temperature without having to manually adjust the settings. HVAC thermostats are an essential part of any home or business, as they provide the necessary control over the temperature of the space. They are an important part of any energy-efficient home or business, as they help to reduce energy costs by ensuring that the temperature is not too high or too low.