Dyson Purifier Hot+Cool HP1: Specs, Features, Pros & Cons
This review measures the Dyson Purifier Hot+Cool HP1 against the full 22-spec sheet we track for Air Purifiers, comparing it like for like with the 31 other models in our database. It earns a VS Score of 57 out of 100 — the weighted result of every verified specification measured against the class average.
On the spec sheet it is strongest in smart features and weakest in noise & power. None of our retail partners currently lists the Dyson Purifier Hot+Cool HP1, so availability may be limited; a missing price never affects the VS Score. A transparency note: this spec sheet is 64% complete. Anything unverified shows as Unknown and is left out of the score — we never estimate a missing value.
Category strengths
Where the Dyson Purifier Hot+Cool HP1 beats the average
- Has true HEPA filter ?
- Has app control ?
- Has air quality sensor ?
- Has auto mode ?
- Has activated carbon filter ?
- Has timer ?
- Has sleep mode ?
- Has filter replacement indicator ?
Where the Dyson Purifier Hot+Cool HP1 trails the average
- A lower filter life ?12 months vs 16.24 months (avg)
- No washable pre-filter ?
- A higher max noise level ?63 dB vs 51.74 dB (avg)
- A slightly heavier build ?5.31 kg vs 5.29 kg (avg)
Editor’s note
The HP1 is three appliances in one column of metal: a fan, a 1,500-watt-class space heater, and a purifier with a sealed Glass HEPA and carbon filter. It is Dyson's entry point into that 3-in-1 category, and judging it fairly means being clear about which of the three you are actually buying.
As a heater-fan it is genuinely excellent, and this is where the value hides. Air Multiplier projection moves a claimed 76 gallons of air a second across 350 degrees of oscillation, heating a room evenly in winter and cooling in summer – jobs a normal purifier simply cannot do. If you would otherwise buy a decent space heater and a decent fan, the arithmetic starts to make sense.
As a purifier it is competent but under-documented. The fully sealed filter is a real HEPA – Dyson claims 99.97% capture at 0.3 microns – with an activated carbon layer for gases, replaced as one unit roughly yearly. Sensors drive an auto mode, the LCD and MyDyson app report air quality live, and a curved remote parks magnetically on top. But Dyson publishes no CADR and no coverage figure, so like-for-like comparison against dedicated purifiers is impossible by design. The one number it does publish is noise: 63 decibels at maximum, which is honest and audibly a fan at full tilt.
Two practical cautions. Heating draws serious power, as all electric heaters do, so running costs depend heavily on which mode you live in. And a purifier that doubles as a heater ends up placed where heat is wanted, which is not always where air cleaning is needed.
Buy the HP1 as a year-round comfort appliance that also cleans the air. As a pure purifier, dedicated machines at half the price move more air.
Specifications
Quality bars are generated automatically against 31 other air purifiers.
Performance
Clean Air Delivery Rate — how quickly smoke particles are scrubbed from the air.
The room size the purifier is rated to clean effectively.
How many times the air in the rated room is cycled each hour.
The number of filtration layers air passes through.
Filtration
A certified HEPA filter captures 99.97% of 0.3-micron particles.
The HEPA grade of the main filter (e.g. H13).
A carbon layer absorbs odours, smoke and VOCs.
Pellet-based carbon beds absorb more odour than thin coated sheets.
A rinseable pre-filter catches hair and large dust to extend filter life.
How long the main filter lasts before replacement.
Noise & power
The lowest-speed noise output; quieter suits bedrooms.
Noise at full speed; lower is better.
Maximum power draw; lower costs less to run continuously.
A dimmed, near-silent mode for overnight use.
Design
A lighter unit is easier to move between rooms.
The height of the unit.
Smart features
Measures particle levels to show and react to air quality.
Adjusts fan speed automatically based on measured air quality.
Control and monitor it from a phone app.
Works with Alexa and Google Assistant.
Tells you when the filter needs replacing.
Schedule the purifier to switch off automatically.
How the VS Score works — and what it can’t tell you
Every measurable spec is scored against the average of all the Air Purifiers we track: matching the class average scores 50, clearly beating it climbs towards 100, and each spec counts according to an editorial weight that reflects real-world impact — a battery-capacity gap moves the score far more than a colour-options list. The quality bars on the spec cards above show where this model sits inside the full range for its class, and the overall VS Score rolls every weighted result into one number.
Unknown values are never estimated. A spec this product doesn’t report simply drops out of its scoring — it isn’t penalised with a guess — but a thinner spec sheet does mean a score built on fewer data points, which is why completeness is disclosed under About this data.
Most importantly: a spec-sheet lead is not the same as a better product. Megapixels, gigahertz and benchmark points describe capacity, not experience — image processing, software optimisation, thermals, haptics and ergonomics decide how a device actually feels, and no table captures reliability or long-term support quality. Treat the VS Score as a structured summary of what can be measured, not a substitute for your own priorities.
About this data
- Specifications are compiled from each manufacturer’s official spec sheet, cross-checked against trusted specification databases, and normalised into one schema so identical things are compared identically.
- Specifications last verified August 19, 2026.
- Data completeness: 14 of the 22 specs in this category are verified (64%). Anything we could not verify is shown as Unknown — never estimated — and is excluded from the score.
- Prices and availability come from live retailer feeds via our shopping partners and refresh throughout the day; a missing price means no partner currently lists the product, not that it is discontinued.
- Want the full picture? Our editorial guidelines explain how we research products, weight the scores and stay independent.
- Spotted an error in a spec? Tell us and we will correct the sheet.
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The bottom line
The Dyson Purifier Hot+Cool HP1 earns a VS Score of 57, a solid mid-pack result among the 32 air purifiers we compare here.
- Who it’s for
- One room that needs heating in winter, cooling in summer and cleaner air year-round – the 3-in-1 arithmetic is where this machine makes sense.
- Who should look elsewhere
- Anyone buying purely for purification: no CADR or coverage figure is published, and dedicated purifiers at half the price move more documented air.
- The trade-off that matters
- Three appliances' worth of usefulness against one appliance's worth of purifier – and 63 dB at full fan is the loudest published figure in our purifier catalogue.
- The main alternative
- Levoit Core 600S plus a basic space heater costs less combined and cleans a larger documented area, if the single-column form factor is not the point.
The VS Score is generated automatically from the weighted specifications above, measured against all other air purifiers in our database. Treat it as a shortlisting guide — not a substitute for your own priorities.
