If you cringe when you open your heating bill every month, it’s time to take the edge off and save money with a smart thermostat. These high-tech HVAC controllers represent a huge advancement over traditional models, able to adapt to temperature changes, set schedules, and more. With many of these units, you can adjust your home’s target temperature from your phone or with your voice, as well as tap into features like service reminders and activity monitoring. They pay for…








