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  2. Split-system air conditioner - Wikipedia

    en.wikipedia.org/?title=Split-system_air...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Split-system_air_conditioner&oldid=752199363"

  3. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    split system A split system is the combination of an outdoor unit and an indoor unit. This is the most common type of system. superheat The number of degrees a vapor is above its boiling point at a specific pressure. subcooling

  4. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    For example, DN20 is the size for copper pipe with an outside diameter of 19.05 mm or 3 ⁄ 4 inch. While pipe sizes in Australia are inch-based, they are classified by outside rather than inside diameter (e.g., a nominal 3 ⁄ 4 inch copper pipe in Australia has measured diameters of 0.750 inches outside and 0.638 inches inside, whereas a ...

  5. 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 ]

  6. The best air purifiers of 2025 - AOL

    www.aol.com/lifestyle/best-air-purifiers...

    One of tallest (nearly 24 inches) and heaviest (17.5 pounds) air purifiers tested, the Winix 5500-2 Air Purifier is ideal for small-to-medium rooms (up to 360 square feet), with a True HEPA filter ...

  7. Heating, ventilation, and air conditioning - Wikipedia

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

    Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality.

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