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VPNs for ad-blocking All of this is to say why I was so ready to fall in love with the Dyson Pure Hot+Cool. Measuring in at 24 cm wide and 76 cm tall, this medium-sized air treatment device is a heater, a fan and an air purifier, all in one. It sounded right up my alley. But unfortunately, the Dyson Pure Hot+Cool falls short of the dream. It’s a powerful heater and purifier, but it just doesn’t cool with the same kind of oomph. Unless you want to spend your summer sitting directly in front of it, you’re going to need another, better fan. And if you’re going to need extra devices anyway, why not just spend your money on two or three really good machines, rather than $899 on a three-in-one that only delivers two-and-a-half? As a heater, it’s also pretty powerful, warming up my living room of 15.8 metres square quickly and efficiently so that no matter where I sat in the space, I felt pleasantly toasty. The Dyson is so powerful a heater that I would advise not using it in too small a space. Because it’s responsive, when you first switch it on it starts to pump out hot air at a fierce rate - to bring the room up to your desired temperature. That can feel way, way too hot if you’re sitting too close. The responsive nature of the device is also key for air purification. The Pure Hot+Cool monitors the air quality of your room, which means that as long as it’s in “auto mode”, it can respond only as needed, rather than constantly cycling air through its filter regardless of whether or not it’s toxin and dust-ridden or fresh as a mountain breeze. Purifying in this manner extends the life of the filter inside the device, which is something worth doing, considering a filter costs $99 to be replaced. Dyson says the Pure Hot+Cool filter needs to be replaced every 4,300 hours, or less if you’re in a dirty environment. That’s about 180 days of constant use, or about once a year if you’re using it for about 12 hours per day. In my case, what I learned from the device was that the air quality in my apartment is fine. I had ratings that were in the green “good” category pretty much all of the time. So to check the machine was working I walked around the room spraying Mortein. The Dyson picked up on the presence of chemicals within a few seconds when I sprayed up close, and within about twenty seconds when I sprayed further away. And it brought the air quality in the room back from the red zone and into the green within a few short minutes. As well as setting the temperature and fan speed, with the remote, you can choose from several oscillation patterns from 90 degrees through to 350 degrees, and also set the machine into “diffused mode” if you want to keep purifying your air but don’t need the heater or fan function operating. With the app, you can also set a timer on the machine and even a schedule to switch it on and off at specific times of day on specific days of the week. If you’re using it at night, there’s a “night mode” that dims the screen and limits the fan speed to a max of four (out of ten possible settings) to keep noise to a minimum.it brought the air quality in the room back from the red zone and into the green within a few short minutes. To put that in context, last summer I bought a Mistral pedestal fan from Bunnings for about $100. The Mistral can cool me from four metres away no problem. Its highest speed setting, if anything, is too powerful (as my partner has complained about on more than one occasion). The gentle breeze effect from the Dyson is nice, but in the height of an Australian summer, I know which fan I would want to keep my living room cool. And frankly paying $899 for a fan you have to sit right next to for a proper cooling effect seems pretty unsatisfactory to me. Adjusting the fan speed immediately switches auto mode off. Which means that your machine will apply the same amount of power to purifying your air whether it’s super fresh or toxic. The result is your filter wears out faster, and you’re finding yourself shelling out $99 to replace it more frequently. That’s not ideal. It also means you’re not getting the same energy efficiency benefits in summer as you are in winter when the Dyson controls its energy use in response to room temperature. On top of all that, in the two most powerful fan settings - 9 and 10 - the Dyson Pure Hot+Cool tends to whistle. Not all the time. But again, for $899, that’s just not good enough.
