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2. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   This historic heat pump heated the town hall for 63 years until 2001. Only then was it replaced by a new, more efficient heat pump. [14] 1945 John Sumner, City Electrical Engineer for Norwich, installs an experimental water-source heat pump fed central heating system, using a nearby river to heat new Council administrative buildings. It had a ...

3. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   A hybrid water heater is a water heating system that integrates technology traits from both the tank-type water heaters and the tankless water heaters. [5] It maintains water pressure and consistent supply of hot water across multiple hot water applications, and like its tankless cousins, it is efficient and can supply a continuous flow of hot ...

4. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   Municipal water feed; Fluid from water storage tank to external (passive) heat source; passive heat source can be the ground (soil or groundwater), sun or air via heat pump, district heating or thermodynamic solar panel

5. Storage water heater - Wikipedia

   en.wikipedia.org/wiki/Storage_water_heater

   Solar heat is clean and renewable. This is the most modern system. Increasingly, solar powered water heaters are being used. Their solar thermal collectors are installed outside dwellings, typically on the roof or walls or nearby, and the potable hot water storage tank is typically a pre-existing or new conventional water heater, or a water heater specifically designed for solar thermal.

6. Hybrid heat - Wikipedia

   en.wikipedia.org/wiki/Hybrid_heat

   A heat pump can be used to cool or heat a house. The heat pump transfers heat by transmitting of R-410A refrigerant. [2] Hybrid heat works with gas furnace and electric heat pump systems [3] or using a variable-speed fan. Variable-speed fans use direct-current-electronically commutated motors (ECM). [4] [5]

7. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   A heat pump in combination with heat and cold storage. A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons.