Bathroom exhaust fan ventilation tips…mold and mildew made the air quality bad in this bathroom. Healthy indoor air quality is important to everyone, especially those with small kids and pets. According to the EPA, poor indoor air quality can cause respiratory and heart issues. The solution is to remove the problem and properly ventilate the space. I used insulated ductwork and connected it to the Panasonic Whisper Cozy’s adaptor using a clamp and foil tape. In addition, the fan should be ventil