What Is It? | Plastic Fan with Coils

Ask This Old House host Kevin O’Connor shows a large, plastic fan with interior coils, but what is it? Click here to SUBSCRIBE to the official This Old House YouTube channel: http://www.youtube.com/subscription_center?add_user=thisoldhouse Resources: The Solar Infra Systems Solar Air Heater (http://ift.tt/1DrgCWT) is available online. Follow This Old House and Ask This Old House: Facebook: http://ift.tt/1psm4fC Twitter: https://twitter.com/thisoldhouse https://twitter.com/asktoh Pinterest: http://ift.tt/1psm4fE G+: http://ift.tt/1CtsNjJ Instagram: http://ift.tt/1psm1QZ Tumblr: http://ift.tt/1CtsLbH