Dyson hot
speedQuietnessExceptional
ecoEfficiencyUK Rated
All-in-One
star4.7
Dyson Purifier Hot+Cool Formaldehyde HP09
8.8Our Score
Clean Performance Index
Based on CADR, noise-to-power ratio, and filter longevity.
verified_user
Our Verdict
"The only device you need all year round. It heats in winter, cools in summer, and purifies always. A true multi-tasker."
How We Tested This Model
- check_circleCADR and coverage parsed against UK room-size assumptions.
- check_circleNoise and power values normalized for side-by-side comparisons.
- check_circlePrice and availability signals refreshed monthly.
thumb_up Pros
- checkReplaces heater and fan
- checkThermostatic control
- checkDestroys formaldehyde
thumb_down Cons
- closeHigh power consumption when heating
- closeVery expensive
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Technical Specifications
square_footCoverage35 m²
airCADR SpeedN/A
volume_upMax Noise46–62 dB
filter_listFiltrationHEPA + Catalytic
paymentsFilter Cost£65 / yr
smartphoneSmart AppYes
verifiedWarranty2 Years
boltPower2000W (Heat)
£699Typical Price
Check Price on Amazonopen_in_newPrice Checked: 25 Feb 2026Availability Checked: 25 Feb 2026