A digital HVAC thermostat is a device that is used to control the temperature in a home or business. It is connected to the heating, ventilation, and air conditioning (HVAC) system and allows the user to set the desired temperature. The thermostat will then monitor the temperature and adjust the system accordingly to maintain the desired temperature. Digital HVAC thermostats are typically programmable, meaning that the user can set the temperature for different times of the day and days of the week. This allows for greater energy efficiency as the system will not be running when it is not needed. Digital HVAC thermostats are also equipped with features such as energy saving modes, vacation settings, and the ability to control multiple zones. With the help of a digital HVAC thermostat, homeowners and businesses can maintain a comfortable temperature while also saving money on energy costs.