The average cost of a smart thermostat is $150. You may be surprised that the price of a smart thermostat is so high. Smart thermostats can save you a lot of money and energy. If you have a smart thermostat installed in your house, you will be able to cut your energy bills by more than half. That's the reason why smart thermostats are getting very popular. You will be able to save about $300 a year if you install a smart thermostat. For those who want to save a lot of money on their heating and cooling bills, it would be a good idea to install a smart thermostat in their house. Energy savings can help you to save about $1,000 a year.