A:AnswerThere is one sold in white and blue that does the heat and cooling but the cooling is just like a regular air purifier. Last I checked they sell other models without the heat and cooling
A:AnswerHello Min,
This is Dan with Dyson. The Dyson Pure Hot + Cool comes with a single 360° glass HEPA filter out of the box. The filter is engineered to last for a year, based on 12 hours of use every day. This is the equivalent of 6 months of continuous use.
In regard to the wattage, this machine operates on 1,200 watts on the heater mode and 26 watts on the fan mode. You are correct in saying the machine only cools with the cooling fan portion. Cooling is a result of airflow produced my the machine as opposed to utilizing Freon as a household air conditioner would.
Best wishes,
Dan