The Benefits of an Exhaust Fan When installing an exhaust fan, be sure to follow the manufacturer's guidelines. Most of them are vented to the exterior. In the 1970s, most were vented into the attic, but modern designs use an operable window. This way, you can be sure your fan is vented properly. A properly vented exhaust system will eliminate the potential for moisture and mold. Moreover, it will save you money. But make...
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