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  2. Energy Star says if you raise your thermostat by only two degrees and use a fan, you can lower air conditioning costs by up to 14%. Check and change your air filters every month.

  3. Best temperature setting for thermostats this winter? The ...

    www.aol.com/best-temperature-setting-thermostats...

    The Energy Department has tips on the most efficient temperature range for homes in the winter months.

  4. These Are the Best Smart Thermostats We Tried and Recommend - AOL

    www.aol.com/lifestyle/best-smart-thermostats...

    The thermostat comes with an instructional guide to help install the device, though if you need a C-Wire added to your home, you’ll need an HVAC technician. Shop Now Nest Learning Thermostat ...

  5. Smart thermostat - Wikipedia

    en.wikipedia.org/wiki/Smart_thermostat

    The gas savings for manual thermostat replacements (10% per thermostat) was found to be larger than for programmable thermostat replacements (8% per thermostat). The difference in electricity savings between homes whose prior equipment was a manual thermostat or programmable thermostat was found to be minimal. [1]

  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. HVAC control system - Wikipedia

    en.wikipedia.org/wiki/HVAC_control_system

    HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...

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