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  2. 4 DIY Air Conditioners That Actually Work - AOL

    www.aol.com/4-diy-air-conditioners-actually...

    Solar-Powered Air Conditioner. This air conditioner is extra sturdy since it's made from a plastic cooler, and the fan can be powered by a 12 volt battery or a 15-watt (1 amp) solar panel. This ...

  3. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.

  4. Inverter compressor - Wikipedia

    en.wikipedia.org/wiki/Inverter_compressor

    This is a very common unit type. The rising cost of energy means that air conditioning manufacturers must develop a new generation of high-efficiency, cost-effective air conditioners for commercial buildings that meet or exceed a part-load efficiency standard of typically 18 IEER. The aim is to reduce energy use by 30% over current equipment.

  5. Amazon Is Slashing Prices on Air Conditioners Right Now - AOL

    www.aol.com/lifestyle/amazon-slashing-prices-air...

    Shop this week's Amazon sale on air conditioner units before the summer heat arrives. Some of our top expert-tested air conditioners are up to 25% off.

  6. Corsi–Rosenthal Box - Wikipedia

    en.wikipedia.org/wiki/Corsi–Rosenthal_Box

    An example of a homemade unit. The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [1] or five [2] [3] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.

  7. After two stamp hikes, the USPS lost nearly $10 billion in 2024

    www.aol.com/two-stamp-hikes-usps-lost-225646450.html

    The USPS has raised postage rates twice in 2024, with a two-cent per stamp increase in January and a second boost in July, which raised the cost of a Forever stamp to 73 cents. Fewer deliveries

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