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2. Tested and Approved: The Best Air Conditioners for Staving ...

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

   The test’s biggest air conditioner was this LG, a hefty slab of an appliance that uses a multi-speed compressor to control cooling. That compressor doesn’t simply run at a constant speed then ...

3. Expert shopping: The quietest air purifiers - AOL

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   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 ...

4. Corsi–Rosenthal Box - Wikipedia

   en.wikipedia.org/wiki/Corsi–Rosenthal_Box

   Corsi–Rosenthal Boxes have been used in schools to reduce risk of COVID-19 transmission, [29] [30] [31] sometimes also functioning as a STEM lesson with students learning about the science of air filtration and constructing the boxes themselves. [32] At the university level, engineering students are also running tests on the units. [33]

5. 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 ...

6. Lennox Merit Series air conditioner - Wikipedia

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

   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] The units are also available with ratings from 1.4 tons to 5 tons. [ 1 ]

7. 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 ...