There's a nice magnetic remote control included, with some handy quality of life features that have been added since the last time I used a Dyson fan. You can, for example, focus the air to blow firmly in a straight line or soften and diffuse out a bit. There's also a welcome "night mode" button, which dials the force down to a quiet level and turns off the super-bright display so it doesn't light up your bedroom. You can set it to oscillate or sit still with the remote, but if you want to angle the fan up or down you need to do it manually.

The "cooling" function is the least impressive part of the package, moving air around but not really bringing the temperature of the room down. It'll take the edge off if it's blowing on you, but this is certainly no air conditioner replacement. Heating on the other hand is very competent, and thermostatically controlled. Just set it to the temperature you want.

The Wi-Fi connectivity expands the usefulness of the fan quite a bit, letting you see the weather conditions outside your house compared to the indoor temperature. You can use the app as a remote regardless of whether or not you're home, meaning you can get your room nice and fresh or nice and toasty before you've even unlocked the door. But where it really gets interesting is when it comes to air purifying.

Even though it was initially hard to quantify the impact the fan had on my lounge room air quality (I wasn't exactly stunned by a sudden lack of irritants like pet dander or pollen, but nor was I bothered by an abundance of the same), the app did a good job of convincing me the purifier was minimising harmful particles in the air.

As with temperature, the app pulls in air quality index data to give you an idea of the severity of the allergens outside your house, and also monitors the air quality inside the room. Looking at the data I can see that using the fan generally resulted in immediate improvement to air quality, although in some instances the quality steadily got worse even when the fan was on, presumably because of an open window. I also notice that anytime we vacuumed nearby the app freaked about how poor the air quality was, so at the very least it knows when there's a bunch of dust being kicked up.