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  2. What should you set your thermostats to during below freezing ...

    www.aol.com/set-thermostats-during-below...

    Changing the temperature by 7 to 10 degrees for eight hours a day, in winter and summer, can save about 10% a year on heating and cooling, the department said. This step to save money and energy ...

  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. Condensing boiler - Wikipedia

    en.wikipedia.org/wiki/Condensing_boiler

    The lower the return temperature to the boiler the more likely it will be in condensing mode. If the return temperature is kept below approximately 55 °C (131 °F), the boiler should still be in condensing mode making low temperature applications such as radiant floors and even old cast iron radiators a good match for the technology.

  5. OpenTherm - Wikipedia

    en.wikipedia.org/wiki/OpenTherm

    An application example is a room temperature controller connected to a heat recovery unit, which is connected to a boiler. The heat recovery unit is then functioning as gateway. In another possible configuration, a thermostat or room controller is connected to a sequencer with further Opentherm interfaces connected to more than one boiler.

  6. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    The fourth category of furnace is the high-efficiency condensing gas furnace. High efficiency condensing gas furnaces typically achieve between 90% and 98% AFUE. [3] A condensing gas furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. The primary gain in efficiency for a condensing gas furnace, as ...

  7. This Is the Best Temperature to Set a Thermostat in Summer - AOL

    www.aol.com/lifestyle/best-temperature-set...

    When summer is in full swing and it’s time to switch on the air conditioning, you may find yourself in one of two camps: Complaining the thermostat setting is too cold, or uncomfortably warm ...

  8. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    A condensing boiler Hot water central heating unit, using wood as fuel. A central heating system provides warmth to a number of spaces within a building from one main source of heat. A central heating system has a furnace that converts fuel or electricity to heat.

  9. Boiler (water heating) - Wikipedia

    en.wikipedia.org/wiki/Boiler_(water_heating)

    The boiler heats water to a temperature controlled by a thermostat. The water then flows (either by natural circulation or by a pump) to radiators in the rooms which are to be heated. Water also flows through a coil in the hot water tank to heat a separate mass of water for bathing, etc.