Thank you for your question. The 682NT will not cause moisture or mildew. The 682NT is a recirculating fan designed to eliminate odors. It was not designed to ventilate/exhaust air to the outside of your home. To prevent moisture and mildew, you will need to install a unit that is adequate for your space and vented to the outside of the home. For further assistance, contact Technical Support at 888-336-6151.
Date published: 2018-04-12