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  2. Attic fan - Wikipedia

    en.wikipedia.org/wiki/Attic_fan

    A powered attic ventilator, or attic fan, is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used. An attic fan can be gable mounted or roof mounted. Additional vents are required to draw in the fresh ...

  3. Whole-house fan - Wikipedia

    en.wikipedia.org/wiki/Whole-house_fan

    Ducted: Remotely mounted away from the ceiling, typically hung from the rafters; can exhaust heat from multiple locations; operation is usually quiet compared to traditional whole-house fans. Window-mounted: Mounted in a window frame. Can also take cool air in from outside. Rooftop-mounted: Suitable for homes with no attic.

  4. Ridge vent - Wikipedia

    en.wikipedia.org/wiki/Ridge_vent

    A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .

  5. Heat recovery ventilation - Wikipedia

    en.wikipedia.org/wiki/Heat_recovery_ventilation

    Ventilation unit with heat pump & ground heat exchanger - cooling. Heat recovery ventilation (HRV), also known as mechanical ventilation heat recovery (MVHR) is a ventilation system that recovers energy by operating between two air sources at different temperatures. It is used to reduce the heating and cooling demands of buildings.

  6. Ventilation (architecture) - Wikipedia

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

    Mechanical ventilation systems may include supply fans (which push outdoor air into a building), exhaust [3] fans (which draw air out of a building and thereby cause equal ventilation flow into a building), or a combination of both (called balanced ventilation if it neither pressurizes nor depressurizes the inside air, [3] or only slightly ...

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