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2. Window fan - Wikipedia

   en.wikipedia.org/wiki/Window_fan

   Window fan. A small twin window fan with thermostat. A large single whole-house window fan with three-speed control and intake/exhaust switch. The same fan, in operation. A window fan is a fan designed to be placed inside the frame of a window. Window fans have been used for many decades to maintain comfortable temperatures and ventilation ...

3. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   Fans are used to force air into low- and high-bypass jet engines, seen here on a Boeing 777. A fan is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor ...

4. Fan death - Wikipedia

   en.wikipedia.org/wiki/Fan_death

   Fan death is a misconception that people have died as a result of running an electric fan in a closed room with no open windows. While the supposed mechanics of fan death are impossible given how electric fans operate, belief in fan death persisted to the mid-2000s in South Korea , [ 1 ] [ 2 ] [ 3 ] and also to a lesser extent in Japan .

5. Window fans to stay cool this summer

   www.aol.com/window-fans-stay-cool-summer...

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6. Corsi–Rosenthal Box - Wikipedia

   en.wikipedia.org/wiki/Corsi–Rosenthal_Box

   Corsi–Rosenthal Box. An example of a homemade unit. The Corsi–Rosenthal Box, also known as a Comparetto Cube, [ 1] is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [ 2] or five [ 3][ 4] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.

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