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2. Thermostat - Wikipedia

   en.wikipedia.org/wiki/Thermostat

   A thermostat exerts control by switching heating or cooling devices on or off, or by regulating the flow of a heat transfer fluid as needed, to maintain the correct temperature. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control to automotive coolant control.

3. Thermostatic radiator valve - Wikipedia

   en.wikipedia.org/wiki/Thermostatic_radiator_valve

   The replacement of a manual heating control with a conventional wax motor TRV has been estimated to save at least 280 kilograms (620 lb) of CO 2 per year (in 2011 for a British semi-detached house with 3 bedrooms and gas heating [1]). They are also considerably cost-efficient, using heat only when needed, and can reduce heating bills by up to ...

4. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   An electric heater is an electrical device that converts an electric current into heat. [1] The heating element inside every electric heater is an electrical resistor , and works on the principle of Joule heating : an electric current passing through a resistor will convert that electrical energy into heat energy.

5. Hot water storage tank - Wikipedia

   en.wikipedia.org/wiki/Hot_water_storage_tank

   Hot water tanks may have a built-in gas or oil burner system, electric immersion heaters. Some types use an external heat exchanger such as a central heating system, or heated water from another energy source. The most typical, in the domestic context, is a fossil-fuel burner, electric immersion elements, or a district heating scheme. [2]

6. Photos show dramatic before and after scenes of the ...

   www.aol.com/photos-california-wildfires...

   Before and after photos of the deadly wildfires in the Los Angeles area have sent tens of thousands scrambling for safety and decimated neighborhoods.

7. Cardiorespiratory Fitness Preserves Brain Health As You Age ...

   www.aol.com/cardiorespiratory-fitness-preserves...

   Executive function/attention control: The domain associated with decision making and planning. Visuospatial function: The ability to perceive and interpret spatial relationships, used for ...

8. The Cuban punk rockers who injected themselves with HIV: 'Los ...

   www.aol.com/news/cuban-punk-rockers...

   The movie, premiering this month, is based on real events in the early 1990s, when a group of young people in Cuba were looking for freedom from government repression.

9. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   Electric point-of-use (POU) tankless water heater, wall-mounted under a sink (Germany) Tankless water heaters can be further divided into two categories according to their heating capability: "full on/full off" versus "modulated". Full on/full off units do not have a variable power output level; the unit is either fully on or completely off ...