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A programmable thermostat allows users to view the current indoor temperature and customize a schedule for future temperatures. With programmable thermostats, users can set up a heating and cooling schedule to use different amounts of energy at different times, such as when the demand for air-conditioned space might be much lower or higher. Programmable thermostats also display information such as outside temperature, humidity, and any malfunctions, more readily than other types.
If users take advantage of the ability to customize a schedule for heating and cooling, programmable thermostats can deliver a large energy savings by delivering less heat and air conditioning during times when they are not needed. Programmable thermostats will also alert users to system malfunctions more quickly, so any damage or discomfort that results can be solved quickly or avoided altogether.