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  2. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air conditioning can be achieved using a mechanical 'air conditioner' or by other methods, including passive cooling and ventilative cooling. [2] [3] Air conditioning is a member of a family of systems and techniques that provide heating, ventilation, and air conditioning (HVAC). [4]

  3. Comfort Systems USA - Wikipedia

    en.wikipedia.org/wiki/Comfort_Systems_USA

    Comfort Systems USA is a company that provides heating, ventilation and air conditioning (HVAC) installation, maintenance, repair and replacement services within the mechanical services industry. The company has 38 operating units in 72 cities and 86 locations throughout the United States .

  4. Goodman Global - Wikipedia

    en.wikipedia.org/wiki/Goodman_Global

    Goodman Manufacturing is an American company operating as an independent subsidiary [1] [2] of Daikin Group, the world's largest manufacturer of heating, ventilation and air conditioning products and systems. The company, founded in 1975 and based in Waller, Texas, manufactures residential heating and cooling systems. [3]

  5. Home inspection checklist for buyers: What to know - AOL

    www.aol.com/finance/home-inspection-checklist...

    HVAC (heating, ventilation and air conditioning), including thermostats, vents, distribution systems, access panels, insulation and vapor retarders ... check out an inspector’s reviews online to ...

  6. Furnace (central heating) - Wikipedia

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

    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 together to drive air circulation in a system termed 'gravity-fed'.

  7. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    A central heating system provides warmth to a number of spaces within a building from one main source of heat. It is a component of heating, ventilation, and air conditioning (short: HVAC) systems, which can both cool and warm interior spaces. A central heating system has a furnace that converts fuel or electricity to heat.

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