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2. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   Sealed systems offer an alternative to open-vent systems, in which steam can escape from the system, and gets replaced from the building's water supply via a feed and central storage system. Heating systems in the United Kingdom and in other parts of Europe commonly combine the needs of space heating with domestic hot-water heating.

3. Is It Cheaper To Run Space Heaters Or Central Heat? - AOL

   www.aol.com/cheaper-run-space-heaters-central...

   Heating costs for central units also vary depending on variables such as the size and age of the house (older homes tend to be less insulated) and the type of heat. The home’s condition also ...

4. Heating system - Wikipedia

   en.wikipedia.org/wiki/Heating_system

   For example; central heating systems depending on what they use to burn/electricity consumed to heat the system. Another environmental impact is during winter months heating systems depend heavily more on fossil fuel based energy production. [11] The use of coal, natural gas, and oil to power heating systems is a direct link to greenhouse based ...

5. Heating, ventilation, and air conditioning - Wikipedia

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

   Central heating unit. Heaters exist for various types of fuel, including solid fuels, liquids, and gases. Another type of heat source is electricity, normally heating ribbons composed of high resistance wire (see Nichrome). This principle is also used for baseboard heaters and portable heaters. Electrical heaters are often used as backup or ...

6. Furnace (central heating) - Wikipedia

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

   Air convection heating systems have been in use for over a century. Older systems rely on a passive air circulation system where the greater density of cooler air causes it to sink into the furnace area below, through air return registers in the floor, and the lesser density of warmed air causes it to rise in the ductwork; the two forces acting ...

7. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   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 seasonal efficiency ratio of 3.42, average thermal delivery of 147 kW, and peak output of 234 kW.