The Dyson Purifier Hot + Cool HP07 is a feature packed smart air purifier, that, as the name suggests does double duty as a room heater or a cooler. This is incredibly convenient as it removed the need for multiple devices in a room, and clears up more floor space. It is available in two colours, Black/Nickel and White/Silver and Dyson gave us the latter to check out. The cylindrical base is silver, while there is a loop on top which throws out air using Dyson’s famous Air Multiplier technology that does not have visible fan blades. In the middle of the base is an LCD screen that displays a variety of relevant info. There is also a grey remote, which is slightly curved. There is a very good reason for this curvature, which we will circle back to.
The unit placed next to a chair for size comparison. (Image credit: News9/Aditya Madanapalle)
The Dyson Purifier Hot + Cool HP07 comes in a cardboard box exactly a metre tall. Inside the box is a small user manual, the unit itself, a pair of packaged HEPA filters and a remote. There is no need to even look at the manual to set it all up. There is a sticker with instructions on how to install the filters right on the base or the inlet for the purifier. I was a bit concerned that it would be messy to remove the sticker, but it has a tab for removal, and it peeled of cleanly, without leaving any sticky gunk behind.
Sticker with instructions for the HEPA filters. (Image credit: News9/Aditya Madanapalle)
The sides of the device pop out when a button is pressed. From here the pair of semicircular HEPA filters can be slotted into the casing, or directly to the base, with the casing pushed in later. The casing snaps back into the base, and I suspect that it is possible to remove the filters and use the unit just as a heater or cooler, without the HEPA filters in place. It does not take more than five minutes to unbox, set it up, plug it in and start purifying the air.
The HEPA filter is not as delicate as it looks. (Image credit: News9/Aditya Madanapalle)
There are no complaints with the build quality, with all the parts of the device, including the remote and the power cord being consistently of a high quality. while moving the device around, the device shifted a bit on the base which scared me for a second. It is better to carry the device around by holding it under the base, instead of the sides. Nothing went wrong, but the entire top of the unit can be slightly displaced from the base if handled incorrectly. I did not turn on the device in place, and simply snapped the top back into place. It worked perfectly fine, with nothing going wrong.
The HEPA filters with the casing. (Image credit: News9/Aditya Madanapalle)
Then comes the good bit. Turning on the room heater. There is a powerful gush of warm air which is straight up hot close to the device. The temperature can go all the way up to 36°C. Within less than ten minutes, in a closed bedroom, in the Delhi winter, the device was able to maintain a temperature of 25°C, when the temperature outside was 14°C. This was the first winter I spent in Delhi, so I have a bunch of heaters, a fan based heater and a quartz rod based heater. The Dyson Purifier Hot + Cool HP07 easily outperformed both of them, providing a steady gush of warm air, easily much more powerful than the fan heater. I could feel the room warming up much quicker than the other two options, which I often used in tandem. I used up 843 units of electricity using the two heaters through the night in December, and am looking forward to see how the Dyson performs in comparison.
The magnifier loop with the LCD screen. (Image credit: News9/Aditya Madanapalle)
Now, of course I was not brave enough to test the cooling function just yet, but the temperature can be taken down to 1°C, and the chilled breeze is as powerful as the warm one. Dyson reps told me that the device is not comparable to an air conditioner. I do not like air conditioners anyway, and would like to find out how this device compares to air conditioners in terms of environmental impact and energy consumption. The good thing is that the amplifier loop swivels. The degree of the swivel can be set to 45, 90, 180 and 350.
The LCD indicator is versatile, beyond what the manual shows. Here is is indicating problems with the power socket. (Image credit: News9/Aditya Madanapalle)
Then there is the handy companion app, which is easy enough to set up. You have to first pair the device on Bluetooth, then take the smartphone close to the unit, after which it prompts you to connect to the WiFi. After that, a whole host of smart features open up, which includes scheduling timings and setting up custom voice commands through either Siri or Alexa on an iOS device to make the cooler perform certain functions. The smartphone also has a remote which mirrors the functionality of the IR remote, with the added benefit of not requiring a straight line of sight. Google Assistant is supported on Android devices.
Screenshot of the Dyson Link companion app. (Image credit: News9/Aditya Madanapalle)
Now the really cool thing is that living in Delhi, you always keep wondering what the air quality in your room is, compared to the outside. Food, cosmetics, paint and glue are just some of the things that add to indoor air pollution, and considering a lack of circulation in those train compartment apartments, it is very possible for pollutants to build up indoors. There is also a lot of construction activity in my area. The great thing is that both the LCD and the smartphone app allow you to monitor the temperature, humidity, levels of PM 2.5 and PM 10, nitrogen dioxide and volatile organic compounds. With the exception of an anemometer and a pyranometer, this thing is an entire weather station! What’s more, keep the unit plugged in, and you can keep get a continuous record of all of these parameters within the app. I only wish that the info could be used by third party apps such as Carrot, and that the information can also be made available on smartwatches. The companion app is only available for Android and iOS devices, and unfortunately, there is no version for the PC yet. It is perfectly possible to use the device without the companion app, because the remote has all the functions possible from the unit itself in a few simple and easy to understand buttons.
The buttons on the remote are easy to understand. (Image credit: News9/Aditya Madanapalle)
When thinking about where to stash the remote, it is natural to put it somewhere close to the device. At first I tried to place it inside amplifier loop, from where it slipped off and fell to the ground. Then, I placed it on top of the loop, where it started dancing around. That is when I realised that there is a magnet under the top of the loop, and there was a reason for the slight curvature of the remote. When oriented the right way, it snapped on to the top and stayed there. Like magic. This is incredibly good design.
The remote snaps on to the top of the loop. (Image credit: News9/Aditya Madanapalle)
The device costs Rs 53,900 and is available on Dyson.com. The worrying thing here is actually the air pollution levels, and considering how high they are in Delhi, they are bound to saturate and turn black within a matter of weeks. It might be necessary to replace the filters frequently, but that is something we will have to find out after using the device for a while. Replacement filters are also available on the Dyson website, for Rs 4,990. How frequently they will need to be replaced remains to be seen, but Dyson itself recommends a swap once every 12 months. That works out to a little less than Rs 416 per month, which is not a steep price to pay considering top quality air purification, and peace of mind. Watch out for our detailed review.