Dyson Purifier Hot+Cool HP1 review: My new year-round comfort machine

Summer’s officially over, and with the colder mornings creeping in, I’ve already started my annual game of “how long can I hold out before turning the heating on?” This year, though, I might actually win. Dyson’s new Purifier Hot+Cool HP1 Purifying Fan Heater promises to heat, cool, and purify your air all in one sleek, bladeless unit.

I’ve been testing the device for a little while now, and not once have I cranked up — or dialled down — the heating. My home has stayed a comfortable temp through chilly mornings, humid nights, and the odd smoky cooking disaster.

This time of year, the weather is all over the place, and the versatile Dyson really comes into its own. For a gadget thats so minimalist in appearance, it’s surprisingly powerful and potentially a serious replacement for your radiator, fan, and air purifier combined.

Dyson Purifier Hot+Cool HP1 in short:

• Stylish 3-in-1 fan heater that heats, cools, and purifies the air
• Simple setup and intuitive app with smart scheduling
• Heats rooms quickly and evenly using Dyson’s Air Multiplier tech
• Not the quietest option, so don't buy it expecting it to be silent
• Premium price, but premium performance

Sleek, simple, and compact

Like most Dyson products, the HP1 arrives looking like it belongs in a high-end design showroom rather than next to your sofa. The white and silver colourway is understated yet elegant, blending neatly into my flat without screaming tech gadget. It’s also compact enough to tuck into corners without cluttering the space, a welcome change from some of Dyson’s chunkier models.

Weighing in at 5.26kg, so 50% lighter than my Boston Terrier, the HP1 is easy to carry from room to room. The handle cutouts on the box and the lightweight frame make portability a non-issue, which is handy if, like me, you’re constantly migrating between a cold office and a warm living room or you’re carrying it from your office in central London to the Essex coastline.

The signature bladeless loop design isn’t just for looks; it ensures smooth, uninterrupted airflow while keeping curious pets (a la a Boston Terrier) and small fingers safe. The magnetic remote control, which snaps neatly onto the top, is another small but classy touch. It’s the kind of design detail that makes you wonder why every brand doesn’t do it, and means I always know where the remote is.

Moments away from comfort

Setting up the Dyson HP1 is refreshingly simple. You don’t need tools, and you don’t need patience; just plug it in, satisfyingly peel off the tape, and scan the serial number in the MyDyson app.

Once it’s up and running, everything about the interface feels effortless. The app lets you fine-tune temperature, oscillation, fan speed, and purification levels with a couple of taps. You can even create custom schedules for different days or link it to Alexa, Google Home, or Siri for voice control.

One of my favourite features was scheduling it to preheat the office before I woke up. There’s nothing like stepping out of bed and trotting to a comfortable space, preheated to your needs.

For those who prefer simplicity, or can't be bothered with the hassle of downloading a fresh app with every purchase, the remote control handles all the basics, too.

Fast, fierce, and full coverage

This is where the HP1 truly earns its keep. Using Dyson’s Air Multiplier technology, it projects over 290 litres of airflow per second. In layman's terms, that means my frosty office went from 15°C to 23°C in a quarter of an hour. That’s faster than cranking up the heating and means my electric blanket has officially been benched.

The 350° oscillation is key here, spreading warmth (or cool air) throughout the entire room rather than creating hot spots. Even sitting across the room, I could feel a steady, comfortable stream of heat — not that aggressive blast you often associate with a heater that quickly becomes overwhelming.

Cooling performance is equally impressive. I’ve not had to use it much, thanks to the time of year, but on the odd occasion where things have gotten oddly toasty after a chilly morning, the cooling side of the coin has done exactly what was expected: made things cooler, quickly.

Not quite a whisper

No point sugar-coating it: the HP1 isn’t whisper-quiet. However, the sound it produces is more of a consistent “whoosh” than a mechanical, jarring whir. It’s closer to white noise than annoyance, and I found it easy enough to tune out once I popped the telly on. You may need to have the TV volume up a touch higher, but it’s by no means excessive or egregious. Compared to other fan heaters that rattle and hum, Dyson’s smooth, bladeless design keeps things tolerable.

If absolute silence is your goal, this won’t be your dream machine. But for most people, it’s a fair trade-off for the performance on offer and considerably quieter than most fans and heaters you’ll buy.

Dyson's Purifier Hot+Cool HP1 is a literal breath of fresh air when it comes to air purifying performance. It makes use of a fully sealed 360-degree Glass HEPA and activated carbon filter system, which is engineered to capture 99.97% of ultrafine particles as small as 0.3 microns. That's all the nasty stuff that sets allergies on high alert, including allergens, bacteria, dust, and common household odours and gases. Think the stank left behind after an oily cooking session, for instance.

Once it's cleaned the air, it's able to distribute it too — Dyson's Air Multiplier technology powerfully circulates up to 200 litres of purified air per second, ensuring even reasonably large rooms are cleaned up relatively quickly. Built-in sensors can be set to automatically monitor and react to airborne pollutants like PM2.5 and PM10 to maintain continuous air quality control, so you'll be able to rest assured that you're coming home to a lung-friendly home at all times. Just note that, for the air purifier to work effectively, you'll need to keep doors and windows closed — so it's not going to counteract outdoor pollutants all that well in the summer when you're letting a breeze in. Handy then that it doubles as a fan too, eh?

With the app in hand, you can then check your air quality graphs, temperature trends, and PM2.5/PM10 particle levels at a glance, along with the option to schedule and automate air cleaning routines. For those living near polluting roads, or with allergies to contend with, it offers good peace of mind.

Smart but temperamental

Dyson’s MyDyson app is stacked with features, and with the HP1, it’s intuitive, attractive, and loaded with useful data.

There were a few moments when the app briefly lost connection, but reconnecting was seamless. When it’s working properly, the experience feels premium, especially with voice assistant integration and real-time environmental updates. For those that have fully kitted out their smart homes with disembodied voice assistants, it's certainly a nice to have the Dyson easily controllable that way for anyone who's adopted that way of life.

The app is also where you’ll find filter life tracking and replacement reminders, which means you won’t need to be some kind of mechanical genius to figure out if it needs replacing.

Premium price, premium payoff

At £549.99, this isn’t a budget buy, and the replacement filters at £75 a pop don’t exactly scream “cheap to run.” But when you consider that the HP1 replaces a heater, fan, and air purifier in one, the price begins to make more sense.

Maintenance is blissfully low-effort; the occasional wipe-down and an annual filter change are all that’s needed. It’s also worth noting how energy-efficient the machine feels in practice: by heating the room I’m in rather than the whole house, I’ve avoided switching on the heating entirely and being able to relocate the fan when I do makes working from home even better.

If you want one appliance that can handle all seasons with minimal fuss and maximum style, this is a worthy investment.

Final verdict: A year-round star

The Dyson Purifier Hot+Cool HP1 has genuinely changed how I heat and cool my home. It’s quick, powerful, beautifully designed, and, most importantly, it works. Whether it’s warming my cold office in the morning or getting the bedroom to the perfect temperature before bed. Though I don't personally suffer from allergies, it's fascinating to see all the gunk it's able to pull out of the air, and is reassuring to know it's helping make my home a healthier place to live in.

It’s not whisper-quiet, and it’s not cheap, but it’s incredibly efficient and surprisingly easy to use. The sleek aesthetics, smart features, and reliable performance make it one of the most versatile appliances around and something definitely worth considering.

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