Do bathroom exhaust fans need to be vented outside?

I am having trouble installing the bathroom exhaust fan myself. Do bathroom exhaust fans need to be vented outside?

Question from Nancy Brown - Mon 2021-04-05

Answers 2

  • Yes, bathroom fans need to be vented outside. If they are not, the fan will recirculate moist air and vapor back into the bathroom, which can lead to moisture damage and mold growth.

    Response from Kenneth Clark - Mon 2022-12-12

    Yes, bathroom exhaust fans need to be vented outside. Bathroom exhaust fans remove moisture and pollutants from the air in your bathroom. If these pollutants are not exhausted to the outdoors, they can accumulate in your home and cause health problems.

    Response from William Gonzalez - Mon 2022-12-30

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