“Smart Thermostats” are technologically superior, modern, internet connected thermostats which can save energy like no other thermostat. A smart thermostat can save energy in the range of 10% to a max of 23% (under ideal conditions) annually. Apart from energy savings, smart thermostats are built with high end features like control from anywhere using smartphones, self-learning (auto-scheduling and auto programming), voice control, geo fencing (turning your boiler ON/OFF based on homeowner’s location). Let’s see the best smart boiler thermostats available.