Dyson
Dyson Purifier Hot+Cool Formaldehyde HP09
Air purifiers
$799List price
Explore this product Your shortlist, side by side
Dyson Purifier Hot+Cool Formaldehyde HP09 vs Coway Airmega AP-1512HH Mighty
Find the differences that matter for your next decision.
Coway
Coway Airmega AP-1512HH Mighty
Air purifiers
$229List price
Explore this product What matters most to you?
Start with all rankable specifications, or focus on a particular use.
Your starting point
Buy the Coway Airmega AP-1512HH Mighty.
- Leads 4 of 5 rankable overall specs; Dyson Purifier Hot+Cool Formaldehyde HP09 takes 1.
- CADR: 233 CFM vs 190 CFM class
How we reached this
We compare the published specifications relevant to your priority. Each rankable specification counts once; your selected requirements can rule a product out. This is a guide to the numbers, not a laboratory performance score.
Noise levels: 24 dB vs 46 dB
It is also $570 cheaper.
The trade-off to know
Check first: the Coway Airmega AP-1512HH Mighty has no Wi-Fi app. Tick them under deal-breakers if that rules it out.
Look at the differences ↓Refine your requirements
What would rule one out?
Side by side
The differences, in detail.
Start with the key specs, then explore as much as you need.
| What you’re comparing | Dyson Purifier Hot+Cool Formaldehyde HP09 | Coway Airmega AP-1512HH Mighty |
|---|---|---|
| CADRPerformance | 190 CFM class (Air Multiplier 77 gallons/sec circulation) | 233 CFM (Smoke), 246 CFM (Dust), 240 CFM (Pollen) |
| Room sizePerformance | Medium to large bedrooms, living rooms up to 500 sq ft | Bedrooms, home offices, medium living rooms |
| Coverage areaPerformance | 500 sq ft room size with 350° oscillation | 361 sq ft (4.8 air changes/hr) / 874 sq ft (2 air changes/hr) |
| Filter typesFilters | 360° Glass HEPA H13 + Activated Carbon + Cryptomic Formaldehyde filter | 4-Stage: Washable Pre-filter + Deodorization Carbon + True HEPA + Vital Ion |
| Filter lifeFilters | 12 months (HEPA/Carbon) / Permanent Formaldehyde catalyst | 12 months (True HEPA) / 6 months (Carbon) |
Showing 5 of 11 specifications. Missing values stay unlisted. About the sources
Both sides of the decision
What you gain. What you give up.
Dyson Purifier Hot+Cool Formaldehyde HP09
Reasons to choose it
- 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
Worth considering
- CADR airflow is lower than dedicated box purifiers
- Expensive upfront purchase price
Coway Airmega AP-1512HH Mighty
Reasons to choose it
- High smoke and particulate filtration efficiency in a compact footprint
- Eco Mode powers off fan automatically after 30 minutes of clean air
- Washable pre-filter extends the life of internal carbon and HEPA filters
Worth considering
- No Wi-Fi connectivity or mobile smartphone app
- Ionizer feature produces trace ozone if left enabled
Beyond the spec sheet
Living with your choice.
Explore the ownership details available for this pair.
What three years could cost
Dyson Purifier Hot+Cool Formaldehyde HP09
3-Year Estimated Total$1,039
Coway Airmega AP-1512HH Mighty
3-Year Estimated Total$319
Room Placement & Bedroom Noise Check
Physical clearance required for airflow, wall placement, and bedroom noise levels.
Wall Clearance Required
Dyson
Cylindrical base: needs 12 in airflow clearance around unit
Coway
Front-intake design: can sit almost flush against walls (leaves floor space open)
Nighttime Sleep Mode Noise
Dyson
28 dB night mode with dimmed LCD
Coway
24.4 dB lowest speed (vital ionizer can be toggled off)
Unit Footprint & Dimensions
Dyson
Bladeless oval loop (30.0 × 8.1 × 8.1 in; 12.6 lb; heats & cools)
Coway
Boxy square unit (16.8 × 18.3 × 9.6 in; 12.3 lb)
Everyday ownership notes
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Dyson: What to watch for
- Hidden Cost
High replacement filter cost (~$80 each).
Coway: What to watch for
- Hardware Quirk
Ionizer ("Vital Ion") produces negligible ozone and should be disabled.
Know what’s behind the comparison
Published specs. Visible sources.
Clinchmark compares manufacturer specifications and other published information. We have not independently lab-tested these products. Editorial assessments and unknown values are identified in the specification details.
Catalog snapshot: September 1, 2026. Prices, availability, and provider terms can change.
Still weighing it up?
Which is cheaper, the Dyson Purifier Hot+Cool Formaldehyde HP09 or the Coway Airmega AP-1512HH Mighty?
Coway Airmega AP-1512HH Mighty costs $570 less at list price.
What is the biggest catch with the Dyson Purifier Hot+Cool Formaldehyde HP09 or Coway Airmega AP-1512HH Mighty?
Coway Airmega AP-1512HH Mighty 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 Coway Airmega AP-1512HH Mighty?
For bedrooms, buy the Coway Airmega AP-1512HH Mighty. Leads 2 of 2 rankable bedrooms specs. Noise levels: 24 dB vs 46 dB
What cannot be compared from spec sheets?
Of the 11 specs tracked here, 6 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.