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2. What to set your thermostat to this winter: U.S. Department ...

   www.aol.com/set-thermostat-winter-u-department...

   The Department of Energy suggests dropping the temperature of your thermostat 7 to 10 degrees while you're out of the house. As heating systems generally don't work any harder to warm your home ...

3. What should you set your heat to in the winter? Avoid ... - AOL

   www.aol.com/set-heat-winter-avoid-thermostat...

   The Energy Department says that even turning thermostats back 7 to 10 degrees from their normal settings for eight hours a day can save as much as 10% a year on homeowners' heating and cooling ...

4. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   A drawback is the installation cost, which can be slightly higher than traditional HVAC systems. Energy efficiency can be improved even more in central heating systems by introducing zoned heating. This allows a more granular application of heat, similar to non-central heating systems. Zones are controlled by multiple thermostats.

5. What Temperature Should You Set Your Thermostat When ... - AOL

   www.aol.com/temperature-set-thermostat-youre...

   According to the U.S. Department of Energy, you can save 10 percent on your heating bill when you change your thermostat by 7-10 degrees for just eight hours a day.

6. Programmable thermostat - Wikipedia

   en.wikipedia.org/wiki/Programmable_thermostat

   Honeywell electronic thermostat in a store. Heating and cooling losses from a building (or any other container) become greater as the difference in temperature increases. A programmable thermostat allows reduction of these losses by allowing the temperature difference to be reduced at times when the reduced amount of heating or cooling would not be objectionable.

7. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   The thermostat controls the fan speed and/or the flow of water or refrigerant to the heat exchanger using a control valve. Due to their simplicity, flexibility, and easy maintenance, fan coil units can be more economical to install than ducted 100% fresh air systems (VAV) or central heating systems with air handling units or chilled beams. FCUs ...