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2. Heating system - Wikipedia

   en.wikipedia.org/wiki/Heating_system

   Heating systems are classified into two main types; central heating and distributed heating. Central heating systems generate heat (electrically or by burning gas/coal) in a single location and distribute the heat through ducts pipes or radiators. Distributed heating systems involve localized heat sources, such as space heaters or electric ...

3. Split-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Split-phase_electric_power

   The line to neutral voltage is half the line-to-line voltage. Lighting and small appliances may be connected between a line wire and the neutral. Higher-power appliances, such as cooking equipment, space heating, water heaters, clothes dryers, air conditioners and electric vehicle charging equipment, are connected to the two line conductors.

4. Air conditioning - Wikipedia

   en.wikipedia.org/wiki/Air_conditioning

   The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.

5. Space heater - Wikipedia

   en.wikipedia.org/wiki/Space_heater

   Electric infrared space heater A space heater is a device used to heat a single, small- to medium-sized area. [ 1 ] This type of heater can be contrasted with central heating , which distributes heat to multiple areas.

6. Heating, ventilation, and air conditioning - Wikipedia

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

   Split systems are preferred and widely used worldwide except in North America. In North America, split systems are most often seen in residential applications, but they are gaining popularity in small commercial buildings. Split systems are used where ductwork is not feasible or where the space conditioning efficiency is of prime concern. [33]

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