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  2. Topf and Sons - Wikipedia

    en.wikipedia.org/wiki/Topf_and_Sons

    In early 1943, the Topf & Söhne fitter Heinrich Messing installed exhaust fans in the Auschwitz II crematoria and also in the gas chambers. [15] Initially, the process of gassing prisoners and then letting fresh air into the gas chambers lasted several hours, but after the exhaust fans were installed this was reduced to about an hour, thus ...

  3. These Top-Rated Exhaust Fans Are Just What Your Musty ... - AOL

    www.aol.com/exhaust-fans-help-control-humidity...

    Exhaust fans keep fresh air circulating in your home. Say goodbye to steamy bathrooms, stuffy garages, or smoky kitchens with the best exhaust fans.

  4. Home inspection checklist for buyers: What to know - AOL

    www.aol.com/finance/home-inspection-checklist...

    Exhaust fan Toilet. Doors and windows Garage doors and operators Installed kitchen appliances Walls, floors and ceilings Ductwork Cabinets and countertops Foundation Fuel burning fireplaces and stoves

  5. Kitchen hood - Wikipedia

    en.wikipedia.org/wiki/Kitchen_hood

    A kitchen hood, exhaust hood, hood fan, extractor hood, or range hood is a device containing a mechanical fan that hangs above the stove or cooktop in the kitchen. It removes airborne grease, combustion products, fumes, smoke, heat, and steam from the air by evacuation of the air and filtration. [ 1 ]

  6. B. F. Sturtevant Company - Wikipedia

    en.wikipedia.org/wiki/B._F._Sturtevant_Company

    A Sturtevant Company ventilation system installed at a Montreal lumber planing mill, c. 1920. Sturtevant died in 1890 and his son-in-law, Eugene Foss, took over the business. After a 1901 fire, the plant was moved to Hyde Park, Massachusetts in 1903, into a new ten-building, 20-acre (8.1 ha) facility designed by Lockwood, Greene & Co.

  7. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    The fan enclosure is directly behind the board, and the filters can be seen at the top. The safety interlock switch is at the bottom left. In the lower middle is the capacitor. Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of

  8. Big Ass Fans - Wikipedia

    en.wikipedia.org/wiki/Big_Ass_Fans

    Big Ass Fans is an American company that manufactures fans, evaporative coolers, and controls for industrial, agricultural, commercial and residential use. The company's headquarters is in Lexington, Kentucky , with additional offices in Australia, Malaysia, Singapore and Canada.

  9. Ventilation (architecture) - Wikipedia

    en.wikipedia.org/wiki/Ventilation_(architecture)

    An axial belt-drive exhaust fan serving an underground car park. This exhaust fan's operation is interlocked with the concentration of contaminants emitted by internal combustion engines. Mechanical ventilation of buildings and structures can be achieved by the use of the following techniques: Whole-house ventilation; Mixing ventilation