Definition

1. Noun:
   • A mechanical ventilation fan installed in the attic of a building, designed to expel hot, stagnant air from the attic space to the outside.

Usage

• An attic fan is a device used for thermal regulation and moisture control in a building's attic. It operates by drawing hot air out, which helps lower the temperature in the attic and, consequently, can reduce cooling costs for the living spaces below.

Examples

• Noun:
  • Installing an attic fan can significantly reduce the heat buildup under your roof during summer.
  • The contractor recommended a solar-powered attic fan for better energy efficiency.
  • Before the heatwave, they made sure the attic fan was in good working order.

Advanced Usage

• "to run the attic fan": to operate or activate the attic fan.
  • We usually run the attic fan in the evening to cool the house down.
• "attic fan installation": the process or act of putting an attic fan in place.
  • Proper attic fan installation is crucial for its effectiveness and safety.

Variants and Related Words

• Whole-house fan (n): A larger fan, often installed in a hallway ceiling, that pulls cool air through the house and exhausts hot air through the attic. It is related but distinct from a standard attic fan, which only ventilates the attic space itself.
• Gable fan (n): A type of attic fan mounted on the gable end (the triangular wall section) of an attic.
• Ridge vent (n): A passive ventilation system installed along the ridge of a roof, often used in conjunction with or as an alternative to an attic fan.

Synonyms

• Attic ventilator: A more general term for any device (fan or vent) that provides ventilation to an attic space.
• Roof fan: A less specific term that could refer to an attic fan or other exhaust fans on a roof.

Related Phrases

• Attic ventilation: The overall process or system of allowing air to flow through an attic, which an attic fan is a part of.
  • Good attic ventilation prevents moisture damage and ice dams.

Noun

1. a fan that blows heated air out of the attic of a building