Purchased the Dyson Hot + Cool Air Purifier a month ago and I’m extremely impressed with the functionality and ease of use. As of this writing, we are in the dog days of summer and I have been able to cool my den effectively. Also since my wife likes to keep the house cold enough to hang meat, I’m able to offset the chilly temperature by using the heat feature on the device and not have to walk around with a hoodie. I read some reviews before purchasing the device and some people took exception to the fact the Dyson app does not support the heat option. To be honest, it was not a deal breaker. The only criticism I have is the remote control. It may be worth it to have raised and or illuminated keys, because in subdued lighting it is diffcult to see the buttons. All in all, I’m happy with the purchase and recommend it to anyone looking for a heater + fan + air purifier in one device.