Condensation can turn a bathroom into a mold factory that ruins tile and triggers allergies. DewStop's weather-prediction software turns on the bathroom fan when temperature and humidity levels get too high, and it predicts how long the fan should run based on how much water vapor is in the air, so the fan won't waste energy or shut off too quickly. And whereas other detectors require installing a new ventilation system, DewStop easily connects to existing bathroom fans.
~Popular Science Magazine

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No More Mold - Mold can wreak havoc in any home, causing harm to the entire family, but now there is a new automatic fan switch called DewStop to help solve that issue. The DewStop senses steam and moisture and automatically offers ventilation. It turns on and off when needed to stop the spread of mold. The DewStop is simple to install and can be found at Ace Hardware.
~Parent Guide News

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Even if you can't embark on a major remodel, you can still go green in your bath. Reduce the energy used by your bath's existing vent fan with DewStop, an easy-to-install switch that monitors humidity levels and turns the fan on and off as needed.
~Better Homes and Gardens
Kitchen+Bath Makeovers

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Contact Us

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Phone: 1-360-876-2974 (office hours are 8am-4pm PST M-F)
Or you can just use the form to your right.


If you're unhappy with a product for any reason, just call or e-mail us within the first 30 days, we'll refund the purchase price or replace the item. It's as simple as that.



Shipping Policy

UPSFedEx Free ground shipping on all orders shipping to the USA or Canada (for orders placed on DewStop.com). Orders are shipped using either UPS or FedEx (USPS may also be used in some cases, most typically for orders shipped to Alaska). DewStop.com does not ship to destinations outside the USA and Canada; to have an order shipped to a different destination, please check our lists of online retailers located on the "In Stores Now" tabs of each product.