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2. 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 through processes.

3. Automatic bleeding valve - Wikipedia

   en.wikipedia.org/wiki/Automatic_bleeding_valve

   Instead they are placed at some local high point, such as the highest point within a utility cupboard or boiler room, even though this is in a basement. European domestic gas boilers often include such a valve within the boiler casing itself. [1] An air release valve on an elevated section of a large diameter lavender-colored pipe

4. Heating, ventilation, and air conditioning - Wikipedia

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

   Heaters are appliances whose purpose is to generate heat (i.e. warmth) for the building. This can be done via central heating. Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building.

5. Heating system - Wikipedia

   en.wikipedia.org/wiki/Heating_system

   The use of sustainable energy sources and energy-efficient systems is encouraged to reduce greenhouse gas emissions. The main source of harmful greenhouse gas emissions is the type of heating systems being used. For example; central heating systems depending on what they use to burn/electricity consumed to heat the system.

6. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   The heating and DHW demands usually differ, and since installers will select a boiler to meet the larger demand (which is usually DHW in most homes), it will be oversized for the smaller demand; an oversized boiler will operate less efficiently due to problems such as short cycling and having increased return water temperatures that reduce ...

7. Hydronics - Wikipedia

   en.wikipedia.org/wiki/Hydronics

   In general, valves nearest to the boiler should vent the slowest, and valves furthest from the boiler should vent the fastest. [ citation needed ] Ideally, steam should reach each valve and close each and every valve at the same time, so that the system can work at maximal efficiency; this condition is known as a "balanced" system.