The Dyson Purifier Hot+Cool HP1 is a 3-in-1 air purifier, space heater, and fan. It's a simplified, entry-level model in Dyson's lineup of combo appliances, and it uses a basic two-stage filtration system consisting of a HEPA-rated filter with a sheet of activated carbon. It also features an air quality sensor that measures PM2.5 and PM10. Unlike its higher-end siblings, it lacks VOC monitoring, temperature and humidity tracking, and a dedicated formaldehyde sensor. Otherwise, it shares the same functionality as other models in the HP lineup, including automatic fan speed adjustment and Wi-Fi and Bluetooth connectivity. You can control the device with the included remote control, the MyDyson app (which also allows you to monitor your home's air quality), or with your voice via Amazon Alexa, Google Assistant, and Siri integrations.
Our Verdict
The Dyson Purifier Hot+Cool HP1 is a sub-par choice for pet owners. It doesn't circulate enough air within an average sized-room in a reasonable time to effectively trap fine particles like pet dander, leaving your home's air quality poor. As a result, it's really only suited to very small spaces. Moreover, the carbon sheet in its air filter is insufficient to combat odors, such as those from your cat's litter box. The one good point is its low operating noise, particularly at the lowest fan speed; if you have a noise-sensitive pet, they won't be disturbed. Just note that using the heater increases the noise substantially across all fan speeds, so this will be more of a nuisance.
Quiet operation on lowest fan speed.
Noisy operation when using the heater.
Terrible particle filtration performance.
Only suited to very small spaces.
The Dyson Purifier Hot+Cool HP1 is a decent option for bedrooms, particularly small ones. Its quiet operation ensures you won't be disturbed at the lowest fan speed, making it a good choice for light sleepers or for a home office where you take many video calls. That said, using the heater significantly increases the noise at minimum fan speed, and its particle filtration rate is only sufficient for a small room, so don't expect it to be very effective anywhere else in your home.
Quiet operation on lowest fan speed.
Flexible operation via app, voice commands, or remote control.
Noisy operation when using the heater.
Terrible particle filtration performance.
The Dyson Purifier Hot+Cool HP1 delivers poor particle filtration performance. Even at its highest fan speed, it only circulates and cleans enough air to be suitable for a very small room. Unless you need a single device for heating, cooling, and air purifying, there are many better alternatives.
Terrible particle filtration performance.
Only suited to very small spaces.
Terrible particle filtration performance.
Changelog
- Updated Jul 16, 2026: We've updated this review to Test Bench 1.3.1, which adds an additional field to indicate whether an air purifier's filtration system is HEPA-certified. To read more about the changes, see the changelog.
- Updated Jun 18, 2026: We've updated this review to Test Bench 1.3, which adds a new 'Footprint' test that's meant to score an air purifier's dimensions. If you're interested in learning more about why we made this change, read our changelog article.
- Updated May 01, 2026: We've updated this review to version 1.2 of our test bench. This new methodology adds the new Low-Noise Particle Filtration Rate test, which measures particle filtration performance when the device is configured to run at a standard operating volume below 45 dBA. If you're interested in seeing more about the changes made to this test bench, see our changelog.
- Updated Mar 16, 2026: Review published.
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Differences Between Sizes And Variants
We bought and tested the Dyson Purifier Hot+Cool HP1 in white/silver. You can also find this model from Costco as the Dyson Purifier Hot+Cool HP11; this is a retailer-specific SKU but has the same hardware and features. As a result, our review is valid for both model names. You can see a photo of our unit's label here.
See a different variant somewhere? Let us know in a comment, and we'll add it to the review.
Popular Air Purifier Comparisons
The Dyson Purifier Hot+Cool HP1 is the entry-level model in Dyson's 3-in-1 air purifier, space heater, and fan lineup. Unfortunately, despite being a premium device, it offers extremely limited air-purifying functionality. Like with other Dyson HP devices, such as the higher-end Dyson Purifier Hot+Cool HP07 and mid-range Dyson Pure Hot+Cool Link HP02, particle filtration is only sufficient in small rooms, like an extra guest bedroom or quaint home office.
If you're looking for an air purifier for a larger space, check out the Levoit Vital 200S. It's somewhat bulkier but delivers a much higher clean air delivery rate, offers similar automatic fan adjustment and particle monitoring, and operates at a similar noise level to the HP1, so your furry friends won't be bothered by it. Alternatively, if you're in the market for a premium device, the NuWave OxyPure runs circles around the Dyson; just know it's much bulkier, and its boxy design may not blend as seamlessly into your home's decor.
For more options, check out our recommendations for the overall best air purifiers, the best air purifiers for bedrooms, and the best air purifiers for pets.
The Dyson Purifier Cool PC1 edges out the Dyson Purifier Hot+Cool HP1 as an air purifier. It delivers somewhat stronger particle filtration, making it a better choice for improving air quality, though both models are ultimately best suited to smaller rooms. They share many of the same convenience features, including app connectivity, a remote control, and automatic fan speed adjustment. The HP1's main advantage is its built-in heating function, allowing it to double as a space heater, and it also runs a little more quietly during normal air purification.
Test Results
