Ebay offers Refurbished Dyson HP4A Pure Hot+Cool Purifier / Fan / Heater for $210 (reg $600) with free shipping.

Product Description:
The Dyson Pure Hot + Cool is the only purifying heater + fan to clean a whole room properly. To simultaneously purify and heat a whole room properly, the Dyson Pure Hot+Cool™ purifying heater + fan goes beyond standard tests by automatically sensing pollution, capturing ultrafine pollutants, and projecting purified and heater air using Air Multiplier™ technology. It is the only purifying heater + fan designed and tested to do this.