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  2. 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 ...

  3. These Small Room Air Purifiers Will Have You Breathing Easy - AOL

    www.aol.com/small-room-air-purifiers-breathing...

    Air purifiers for small rooms are a game changer to get rid of dander, pollen, and other allergens. These are Cosmopolitan editors' faves. These Small Room Air Purifiers Will Have You Breathing Easy

  4. Air purifier - Wikipedia

    en.wikipedia.org/wiki/Air_purifier

    An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .

  5. Doctors Say This Is How You Can Loosen and Clear Mucus From ...

    www.aol.com/doctors-loosen-clear-mucus-chest...

    Use a humidifier and/or air purifier Environmental adjustments can make a significant difference too, says Dr. Mercola. Try using a humidifier to “maintain humidity levels between 35-45% in your ...

  6. List of Dyson products - Wikipedia

    en.wikipedia.org/wiki/List_of_Dyson_products

    Around 2020, Dyson discontinued its basic cooling fans in favour of an extended range of combination fan air purifiers, some with optional heating. High-end models feature automatic monitoring of indoor air quality for particulates and volatile organic compound (VOC) contamination, and reporting over Bluetooth or WiFi to a smartphone app. [ 47 ]

  7. Thermal expansion valve - Wikipedia

    en.wikipedia.org/wiki/Thermal_expansion_valve

    A thermal expansion valve is a key element to a heat pump; this is the cycle that makes air conditioning, or air cooling, possible. A basic refrigeration cycle consists of four major elements: a compressor, a condenser, a metering device and an evaporator. As a refrigerant passes through a circuit containing these four elements, air ...