Since they are electronic, programmable thermostats are more accurate and efficient than thermostats that contain mercury. With programmable thermostats you can control the temperature in your home at different times of day without ever touching your thermostat. Because everything is automatic, you will never forget to change the setting on your own.
Wilson's replaced my old unit that was costing me a fortune! My new Bryant Evolution Extreme is fabulous! It is so quiet I don't even notice it anymore and it is saving me over $200 every month! I couldn't be more pleased.