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  2. This silent U-shaped air conditioner fits perfectly in ... - AOL

    www.aol.com/article/lifestyle/2020/03/26/this...

    Midea Group unveiled their newest product, the Midea U-Shaped A/C. It's easier to install and uses less energy than the typical window unit. This silent U-shaped air conditioner fits perfectly in ...

  3. Friedrich Air Conditioning - Wikipedia

    en.wikipedia.org/wiki/Friedrich_Air_Conditioning

    It was once the most high-efficiency room air conditioner made by Friedrich. [10] QuietMaster: Professional grade room air conditioners manufactured from the 1976 until 2010, when it was replaced by the S/M/L chassis Kühl models. They were manufactured in standard (3-speed analog), "Deluxe" (Deluxe was later called 4-Speed), "Programmable ...

  4. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air conditioner equipment power in the U.S. is often described in terms of "tons of refrigeration", with each approximately equal to the cooling power of one short ton (2,000 pounds (910 kg) of ice melting in a 24-hour period. The value is equal to 12,000 BTU IT per hour, or 3,517 watts. [60]

  5. Lennox Merit Series air conditioner - Wikipedia

    en.wikipedia.org/wiki/Lennox_Merit_Series_air...

    Lennox has three different series of air conditioners, Elite, Dave Lennox Signature Collection and Merit series. [1] The Merit series is the lowest cost Lennox air conditioner, and there are 4 models of Single-stage with a 13, 14, 15 or 16 Seasonal energy efficiency ratio (SEER) rating. [2]

  6. Expert shopping: The quietest air purifiers - AOL

    www.aol.com/news/expert-shopping-quietest-air...

    The quietest air purifiers include options from Blueair, Dyson and Philips. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...

  7. Internally grooved copper tube - Wikipedia

    en.wikipedia.org/wiki/Internally_grooved_copper_tube

    To use smaller tubes instead of conventional-sized tubes in air conditioners, heat exchangers must be redesigned including the fin and tube circuits. [12] Design optimization requires the use of computational fluid dynamics to analyze airflow around the tubes and fins, as well as computer simulations of refrigerant flow and temperatures inside the tubes.