Many different types of fans are used throughout the home to assist with household ventilation.

Range Hoods

Kitchen exhaust fans are an important part of your home╩╝s ventilation system. Range hoods remove odours from your house, improve indoor air quality and help to reduce airborne moisture caused by cooking. The reduction of airborne moisture is important in preventing the spread of mould throughout the home. Some kitchen range hood fans are interconnected with the operation of the furnace fan while others operate independently. Range hood filters should be kept clean to provide quiet and efficient operation. Refer to the manufacturers╩╝ manual for instructions when replacing range hood filters.

Kitchen or Bath Fans

Kitchen and bath ventilation fans are indirectly open to outside air and contain a damper to limit the back-flow of cold air. The damper is balanced to allow exhaust air to escape freely when the fan is turned on and falls back into the closed position when the fan is turned off. By design they are not completely effective at eliminating cold air infiltration. Over time, these exhaust fans will accumulate dust and air borne debris that can impair fan efficiency, obstruct the damper and create excess noise. The fan is connected to ductwork that ends with a screen at an outside hood. The fan and the screen at the hood end of the vent should be checked regularly and cleaned of debris to ensure proper operation.


Ensure the electrical breaker that supplies power to the circuit for the fan is turned off before removing the trim.

Ceiling Fans

Ceiling fans are effective for helping move air throughout the home and can be useful when heating or cooling the home. Ceiling fans should be installed so that they operate smoothly. If they are vibrating or shaking, check for these potential issues:

  • Ensure the blades have not come loose from the body of the fan. If they have, tighten the connection between the blades and the fan body.
  • Ensure the blades are not bent or cracked. If a blade is bent or damaged, contact the manufacturer for a replacement.
  • Ceiling fan blades that accumulate debris may become unbalanced over time. Keep the blades clean and free of dust and debris.
  • If the fan is not securely anchored in place, it may begin to wobble and vibrate. Ensure the screws that secure the ceiling fan box to the ceiling are snug. To do this you, may have to remove the trim around the ceiling fan box.