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Head to head

Dyson Purifier Hot+Cool Formaldehyde HP09 vs Winix 5500-2 Air Purifier

They split the 4 rankable specs evenly, so cost decides it: Winix 5500-2 Air Purifier costs $640 less.

Catalog as of September 1, 2026

Why, in numbers

  • CADR: Dyson Purifier Hot+Cool Formaldehyde HP09 lists 190 CFM class (Air Multiplier 77 gallons/sec circulation) (Dyson sheet, 2026-09-02); Winix 5500-2 Air Purifier lists 232 CFM (Smoke), 243 CFM (Dust), 246 CFM (Pollen) (Winix sheet, 2026-09-02).
  • Coverage area: Dyson Purifier Hot+Cool Formaldehyde HP09 lists 500 sq ft room size with 350° oscillation (Dyson sheet, 2026-09-02); Winix 5500-2 Air Purifier lists 360 sq ft (5 air changes/hr) / 880 sq ft (2 air changes/hr) (Winix sheet, 2026-09-02).
  • Room size: Dyson Purifier Hot+Cool Formaldehyde HP09 lists Medium to large bedrooms, living rooms up to 500 sq ft (Dyson sheet, 2026-09-02); Winix 5500-2 Air Purifier lists Bedrooms, nurseries, home offices up to 360 sq ft (Winix sheet, 2026-09-02).
  • Filter types: Dyson Purifier Hot+Cool Formaldehyde HP09 lists 360° Glass HEPA H13 + Activated Carbon + Cryptomic Formaldehyde filter (Dyson sheet, 2026-09-02); Winix 5500-2 Air Purifier lists Fine Mesh Pre-Filter + Washable AOC Carbon + True HEPA (99.97%) (Winix sheet, 2026-09-02).
  • Filter life: Dyson Purifier Hot+Cool Formaldehyde HP09 lists 12 months (HEPA/Carbon) / Permanent Formaldehyde catalyst (Dyson sheet, 2026-09-02); Winix 5500-2 Air Purifier lists 12 months (HEPA) / Washable carbon filter (Winix sheet, 2026-09-02).

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Dyson Purifier Hot+Cool Formaldehyde HP09
$7992 spec wins
Swap

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Winix 5500-2 Air Purifier
$1592 spec wins
Swap

Compare a different air purifier

Levoit Core 300S Smart True HEPA Air Purifier$149Levoit Core 400S$219Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Honeywell HPA300 HEPA Air Purifier$249Levoit Core 600S Smart True HEPA$299Blueair Blue Pure 211+ Auto$339Coway Airmega 250$399Coway Airmega 400$549Blueair Protect 7470i$649Alen BreatheSmart 75i Large Room Air Purifier$749

Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your air purifier.

Straight answer

Overall: 2 to 2

Tied overall. Winix 5500-2 Air Purifier is cheaper.

  • The 4 rankable overall specs split 2 to 2.
  • Saves $640 at list price.

Check first: the Winix 5500-2 Air Purifier has no Wi-Fi app.

2 Dyson Purifier Hot+Cool Formaldehyde HP094 rankable of 11 specsWinix 5500-2 Air Purifier 2

Deal-breakers

tick what would make you walk away

  • row

    No schedules or remote control from your phone.

    Clear:Dyson Purifier Hot+Cool Formaldehyde HP09 · MyDyson App, voice control via Alexa, G…Trips:Winix 5500-2 Air Purifier · Auto Mode + Sleep Mode with Smart Light…
  • row

    Louder than normal conversation at full speed.

    Trips:Dyson Purifier Hot+Cool Formaldehyde HP09 · 46 dB (Low) – 62 dB (Max)Clear:Winix 5500-2 Air Purifier · 27.8 dB
  • row

    Undersized for an open-plan living area.

    Trips:Dyson Purifier Hot+Cool Formaldehyde HP09 · 500 sq ft room size with 350° oscillati…Trips:Winix 5500-2 Air Purifier · 360 sq ft

At a glance

The handful of numbers that decide most purchases in this category.

2 of 2 differ

CADR

Dyson

190 CFM class (Air Multiplier 77 gallons/sec circulation)

Winix

232 CFM (Smoke), 243 CFM (Dust), 246 CFM (Pollen)

Coverage area

Dyson

500 sq ft room size with 350° oscillation

Winix

360 sq ft (5 air changes/hr) / 880 sq ft (2 air changes/hr)

True 3-Year Cost of Ownership (TCO)

Upfront price + 3 years of consumables, fees & essential add-ons

Dyson Purifier Hot+Cool Formaldehyde HP09

Upfront list price$799
3-Yr 360° Combi Glass HEPA + Carbon (Every 12 months (~$80/yr))+$240
3-Year Estimated Total$1,039

Winix 5500-2 Air Purifier

Upfront list price$159
3-Yr Washable AOC + True HEPA (Every 12 months (~$45/yr))+$135
3-Year Estimated Total$294

Room Placement & Bedroom Noise Check

Physical clearance required for airflow, wall placement, and bedroom noise levels.

Ergonomic & Spatial Check

Wall Clearance Required

Cylindrical 360° filters cannot sit flush against walls without choking intake.

Dyson

Cylindrical base: needs 12 in airflow clearance around unit

Winix

Requires 12 in perimeter airflow space

Nighttime Sleep Mode Noise

Levels below 25 dB are virtually silent for light sleepers.

Dyson

28 dB night mode with dimmed LCD

Winix

Standard sleep speed

Unit Footprint & Dimensions

Dyson

Bladeless oval loop (30.0 × 8.1 × 8.1 in; 12.6 lb; heats & cools)

Winix

Standard room purifier footprint

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

Dyson: What to watch for

  • Hidden Cost

    High replacement filter cost (~$80 each).

    The catalytic formaldehyde combo filter is significantly more expensive than standard box purifiers from Levoit or Coway.

Winix: What to watch for

  • Maintenance

    Requires periodic filter replacements to maintain airflow and odor capture.

    Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Dyson Purifier Hot+Cool Formaldehyde HP09$7992 wins
Winix 5500-2 Air Purifier$1592 wins

Performance

3 differences
Performance specifications. Middle column is Dyson Purifier Hot+Cool Formaldehyde HP09, right column is Winix 5500-2 Air Purifier.
CADR190 CFM class (Air Multiplier 77 gallons/sec circulation)232 CFM (Smoke), 243 CFM (Dust), 246 CFM (Pollen) (wins this row: higher)
Room sizeMedium to large bedrooms, living rooms up to 500 sq ftBedrooms, nurseries, home offices up to 360 sq ft
Coverage area500 sq ft room size with 350° oscillation (wins this row: higher)360 sq ft (5 air changes/hr) / 880 sq ft (2 air changes/hr)

Filters

2 differences
Filters specifications. Middle column is Dyson Purifier Hot+Cool Formaldehyde HP09, right column is Winix 5500-2 Air Purifier.
Filter types360° Glass HEPA H13 + Activated Carbon + Cryptomic Formaldehyde filterFine Mesh Pre-Filter + Washable AOC Carbon + True HEPA (99.97%)
Filter life12 months (HEPA/Carbon) / Permanent Formaldehyde catalyst12 months (HEPA) / Washable carbon filter

Usability & Smart

leads 1-0
Usability & Smart specifications. Middle column is Dyson Purifier Hot+Cool Formaldehyde HP09, right column is Winix 5500-2 Air Purifier.
Noise levels46 dB (Low) – 62 dB (Max)27.8 dB (Silent) – 54.8 dB (Turbo) (wins this row: lower)
Energy consumption40 W (Purifier mode) / 1,575 W (Heating mode)70 W max (Energy Star)
Smart featuresMyDyson App, voice control via Alexa, Google Assistant, Siri ShortcutsAuto Mode + Sleep Mode with Smart Light Sensor (No Wi-Fi)
Air quality sensorsSolid-state formaldehyde sensor, PM2.5, PM10, VOC, NO2, Temperature, HumiditySmart Optical Air Quality Sensor (3-color LED indicator)

Design & Ownership

leads 1-0
Design & Ownership specifications. Middle column is Dyson Purifier Hot+Cool Formaldehyde HP09, right column is Winix 5500-2 Air Purifier.
Weight12.6 lb (5.7 kg) (wins this row: lower)14.7 lb (6.7 kg)
Warranty2 years2 years
Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.
Dyson Purifier Hot+Cool Formaldehyde HP09 source (opens in a new tab)Winix 5500-2 Air Purifier source (opens in a new tab)

Which one should you buy

Pick this one if

Dyson Purifier Hot+Cool Formaldehyde HP09

3-in-1 purifier, ceramic space heater, and cooling fan with solid-state catalytic formaldehyde sensor.

  • Combines HEPA H13 purification, fast ceramic heating, and cooling fan in one
  • Destroys formaldehyde continuously without filter replacement
  • Fully sealed whole-machine HEPA H13 standard prevents bypass

What you give up

  • CADR airflow is lower than dedicated box purifiers
  • Expensive upfront purchase price
Full Dyson Purifier Hot+Cool Formaldehyde HP09 specs →

Pick this one if

Winix 5500-2 Air Purifier

Budget favorite with PlasmaWave technology, Washable AOC Carbon Filter, and True HEPA filtration.

  • Washable Advanced Odor Control (AOC) carbon filter with real carbon pellets
  • PlasmaWave technology breaks down pollutants at molecular level
  • Unbeatable performance per dollar in medium rooms

What you give up

  • No mobile app connectivity or smart home controls
  • Aesthetics and plastic chassis are dated
Full Winix 5500-2 Air Purifier specs →

Best for each use

Bedrooms

Quiet nights: low-speed noise, sleep mode, schedules from your phone

Tied on bedrooms. Winix 5500-2 Air Purifier is cheaper.

  • The 2 rankable bedrooms specs split 1 to 1.
  • Saves $640 at list price.

Big rooms & allergies

Open-plan rooms or allergies: CADR, coverage, filter grade

Tied on big rooms & allergies. Winix 5500-2 Air Purifier is cheaper.

  • The 2 rankable big rooms & allergies specs split 1 to 1.
  • Saves $640 at list price.

Low running cost

Cheap to own: filter life, power draw, warranty

Too close to call on low running cost from the spec sheets.

  • Filter life: 12 months vs 12 months
  • Energy consumption: 40 W vs 70 W max

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

Dyson Purifier Hot+Cool Formaldehyde HP09 spec sheetWinix 5500-2 Air Purifier spec sheet

Manufacturer pages: Dyson Purifier Hot+Cool Formaldehyde HP09 ↗ · Winix 5500-2 Air Purifier ↗

Common questions

Which is cheaper, the Dyson Purifier Hot+Cool Formaldehyde HP09 or the Winix 5500-2 Air Purifier?

Winix 5500-2 Air Purifier costs $640 less at list price.

What is the biggest catch with the Dyson Purifier Hot+Cool Formaldehyde HP09 or Winix 5500-2 Air Purifier?

Winix 5500-2 Air Purifier has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.

Which is better for bedrooms, the Dyson Purifier Hot+Cool Formaldehyde HP09 or the Winix 5500-2 Air Purifier?

Tied on bedrooms. Winix 5500-2 Air Purifier is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $640 at list price.

What cannot be compared from spec sheets?

Of the 11 specs tracked here, 7 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.

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