A 24Vac thermostat is a type of thermostat that uses 24 volts of alternating current (AC) to regulate the temperature of a space. This type of thermostat is often used in heating and cooling systems, such as furnaces, air conditioners, and heat pumps. It works by sending a signal to the heating or cooling system to turn on or off when the desired temperature is reached. The 24Vac thermostat is an efficient and reliable way to maintain a comfortable temperature in your home or office. It is also a great way to save energy and money, as it will only turn on the heating or cooling system when necessary. The 24Vac thermostat is easy to install and can be used with a variety of different systems. It is also very affordable, making it a great choice for anyone looking to save money on their energy bills.