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  2. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    For economy, these systems are designed for average low winter temperatures and use supplemental heating for extreme low temperature conditions. The advantage of the heat pump is that it reduces the purchased energy required for building heating; often geothermal source systems also supply domestic hot water.

  3. Economizer - Wikipedia

    en.wikipedia.org/wiki/Economizer

    Low temperature systems such as freezers move less fluid in same volumes. That means the compressor's pumping is less efficient on low temperature systems. This phenomenon is notorious when taking in account that the evaporation temperature for a walk-in freezer at −20 °F (−29 °C) may be around −35 °F (−37 °C).

  4. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    For older houses where the water heater is part of the space heating boiler, and plumbing codes allow, some plumbers install an automatic gas shutoff (such as the "Watts 210") in addition to a TPR valve. When the device senses that the temperature reaches 99 °C (210 °F), it shuts off the gas supply and prevents further heating.

  5. The free and easy trick to save more than £300 on your energy ...

    www.aol.com/free-easy-trick-save-more-110021076.html

    Two small changes to the way your boiler works could save up to 18%.

  6. Hydronics - Wikipedia

    en.wikipedia.org/wiki/Hydronics

    The two-pipe reverse return configuration which is sometimes called 'the three-pipe system' is different from the two-pipe system in the way that water returns to the boiler. In a two-pipe system, once the water has left the first radiator, it returns to the boiler to be reheated, and so with the second and third etc.

  7. Heating system - Wikipedia

    en.wikipedia.org/wiki/Heating_system

    A heating system is a mechanism for maintaining temperatures at an acceptable level; by using thermal energy within a home, office, or other dwelling. Typically, these systems are a crucial part of an HVAC (Heating, Ventilation, and Air Conditioning) system.

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