I have been researching in the heating and cooling field. I want to energy efficient and save some money. Thermostats assist in zone control heating and cooling. Zone control heating and cooling systems save money easily. Most people have central heating and cooling systems. They have furnaces and air conditioners. They could also have boilers in their home. They are not efficient on your finances. What these systems have is one thermostat. The systems are set to one temperature. The heating and cooling systems try to heat or cool your home to this one temperature. This is just not possible. Your whole house cannot be heated or cooled. So your system stays on all day. Your systems staying on costs money. You are constantly paying for the heated and cooled air. Also your systems do not get to turn off. It is hard to clean a system while it is running. Also your system can overheat if it is on all the time. Your system is more likely to break down. Also your systems are more prone to small and large repairs. Zone control heating and cooling solves all these issues. If you install thermostats in your rooms you can decide what temperature you want each room. The zone control heating and cooling will be more affective. Have your living room warm, your bedroom moderate temperature and your kitchen cool. You decide what is the ideal temperature. Also with thermostats in your zone control heating and cooling systems you can let your systems turn off. Have your thermostats set to turn your systems off when you are not even home.