Navigation for Fans Overview How To & DIY Video Ideas & InspirationWhat Is It? | Plastic Fan with CoilsAsk This Old House host Kevin O’Connor shows a large, plastic fan with interior coils, but what is it? by Kevin O'Connor, Host Resources:The Solar Infra Systems Solar Air Heater is available online.Next Up In Fans How to Replace a Ceiling Fan How To Install a Ceiling Fan Different Types of Fans for the Home How to Size and Install a Ceiling Fan How To Clean Ceiling Fans All About Ceiling Fans