Winix C710 vs Coway Airmega Mighty AP-1512HH
Two mid-size machines that a pet household will find on every shortlist. Only one of them has numbers produced by somebody other than the company selling it.
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The Winix C710 is the better-evidenced buy: AHAM certifies it at 248 smoke CADR across 384 square feet, with a certified 235 kWh a year and no ion generator. The Coway AP-1512HH claims 233 CFM, appears in no certification register, publishes no certified energy figure and draws 77 watts — but it does document a washable pre-filter and a filter interval.
These two land on the same shortlist constantly, and the usual separation is price or looks. There is a sharper one available, and it is the same one that runs through this whole site.
The numbers, side by side
| Winix C710 | Coway AP-1512HH | |
|---|---|---|
| Smoke CADR | 248 CFM | 233 CFM |
| Dust CADR | 252 CFM | 246 CFM |
| Pollen CADR | 262 CFM | 240 CFM |
| Verified by | AHAM VERIFIDE | Nobody — manufacturer only |
| Certified room size | 384 sq ft | 361 sq ft (Coway's own) |
| Advertised coverage | Not published as a 1 ACH figure | 1,748 sq ft in 60 minutes |
| Power draw | 45 W | 77 W |
| Annual energy (certified) | 235 kWh | Not published |
| Electricity per year | $43 | Not published |
| Measured ozone | 1 ppb | Not published |
| Ionizer | None | Bipolar device |
| Filter class (register) | HEPA-Type | Not classified |
| Washable pre-filter | Not documented | Yes |
| Published filter interval | Not published | 12 months HEPA, 6 months deodorization |
Electricity costs on this page use 18.34¢ per kWh, the U.S. average residential price for June 2026 from the U.S. Energy Information Administration, Electric Power Monthly, Table 5.3. Your rate is on your bill and is probably not this one; multiply the kWh figure by your own rate and you have your number.
On output they are effectively tied
248 against 233 smoke CADR is a 6% difference, and 384 against 361 square feet is the same 6% expressed as room size. In a real room, in a real household, that is not a distinction you will perceive. Anybody telling you one of these clears a room noticeably faster than the other is inventing a difference.
On the pollen figure the C710 leads more clearly — 262 against 240 — which matters if seasonal allergy is part of why you are buying. The pollen roundup ranks on that column specifically.
On power they are not close
77 watts against 45 is the largest measurable gap between these machines. Coway publishes the figure openly, to its credit. For a purifier that runs continuously — which is what a shedding household needs — that is most of a 70% difference in electricity for the same air.
AHAM certifies the C710 at 235 kWh a year, which is $43 at the U.S. average residential rate. Coway publishes no certified annual figure for the Mighty, and we are not going to derive one from wattage and present it as equivalent — the certified number contains a duty-cycle assumption that a back-of-envelope multiplication does not.
On verification they are not comparable
The C710 is in AHAM’s directory of certified room air cleaners, which means an independent laboratory verified its ratings against ANSI/AHAM AC-1. It is also in the ENERGY STAR database, which publishes its measured ozone emission — 1 ppb — and its certified annual energy use.
The AP-1512HH is in neither. Coway’s figures may be entirely accurate; the company is reputable and its numbers are internally consistent with AHAM’s own room-size formula. But that model also ships a bipolar ionizing stage with no published ozone measurement from anyone, which is the part that would concern us in a bedroom.
Where the Coway genuinely wins
Two things, and both matter specifically in a pet household.
A documented washable pre-filter. Shed hair and coarse dander load a HEPA cartridge fast, and a rinsable mesh in front of it is the difference between a twelve-month filter and a nine-month one. Coway documents one on the Mighty. Winix documents one on the 5500-2 rather than the C710.
Published filter intervals. Coway publishes 12 months for the HEPA filter and 6 for the deodorization filter. Winix publishes no interval for the C710 that we could source, and an unpriced, unscheduled filter is the half of the running cost nobody budgets for — what filters cost over three years.
Quick picks
Both machines, plus the one we would actually buy for a pet household at this size.
| # | Product | Best for | Certified CADR | Price |
|---|---|---|---|---|
| 1 | No photo What we would actually buy Honeywell HPA6000 257 certified CFM on 34.9 watts, classified HEPA, 0.00 ppb ozone. | Large living rooms, true HEPA | 257CFM smoke AHAM VERIFIDE | |
| 2 |  Better evidenced of the two Winix C710 248 certified CFM, AHAM listed, 235 certified kWh, no ion generator. | Lowest running cost at living-room size | 248CFM smoke AHAM VERIFIDE | |
| 3 | No photo Better documented consumables Coway Airmega Mighty AP-1512HH Washable pre-filter and published intervals — but in no register. | The popular default, unverified | 233CFM smoke Manufacturer-claimed |
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The picks
Winix C710
Winix · model C710
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Nearly the same air movement as the AT41 for a third less electricity a year. If you can find it, it is the cheapest certified 380-plus square-foot unit to run.
248 smoke / 252 dust / 262 pollen CFM · 250 PM2.5
- Certified room size
- 384 sq ft
- Energy / year
- 235 kWh
- Electricity / year
- $43
- Air per watt
- 6.2 CFM/W
- Power draw
- 45 W
- Noise
- Not published
- Measured ozone
- 1 ppb
- Filter class
- HEPA-Type
- AHAM rule, 350 sq ft
- Clears it (234 needed)
No ionizer — filtration only
AHAM classifies this model 'Fan with Filter'.
248 certified smoke CADR across 384 certified square feet, no ion generator, and 235 certified kWh a year — $43. AHAM records the filter set with a carbon stage, which is the part that addresses pet odor rather than dander.
The honest con: ENERGY STAR classifies the filter HEPA-Type rather than HEPA, it measures 1 ppb of ozone rather than zero, and Winix publishes neither a washable pre-filter nor a filter interval for it. In a heavy-shedding house that last omission is a real gap.
Coway Airmega Mighty AP-1512HH
Coway · model Airmega Mighty AP-1512HH
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The most-recommended air purifier in this category, and the one with no third-party CADR to check. Coway's own figures are good; at 77 watts it is also the thirstiest machine here for its output.
233 smoke / 246 dust / 240 pollen CFM
- Certified room size
- 361 sq ft
- Advertised coverage
- 1,748 sq ft in 60 minutes
- Power draw
- 77 W
- Noise
- 24-53 dB(A)
- AHAM rule, 350 sq ft
- Short (234 needed)
Bipolar device — fitted
Coway lists a 'Bipolar Device' as the fourth filtration stage. Because this model is in neither register, there is no independent ozone measurement for it — and Coway does not publish one.
A capable machine on the manufacturer’s own numbers — 233 CFM across 361 square feet — with the two things the Winix lacks: a documented washable pre-filter and published filter intervals for both stages.
The honest con: it is in no certification register, so every figure above is Coway’s. It draws 77 watts, the highest for its output of anything we cover. And it carries a bipolar ionizing stage with no published ozone measurement from any source, which in a bedroom is the argument against it.
Honeywell HPA6000
Honeywell · model HPA6000B
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More certified air movement than the HPA4300 for four more watts, and the same zero on ozone. The sensible step up if your room is nearer 400 square feet.
257 smoke / 262 dust / 285 pollen CFM · 259 PM2.5
- Certified room size
- 398 sq ft
- Energy / year
- 207 kWh
- Electricity / year
- $38
- Air per watt
- 7.3 CFM/W
- Power draw
- 34.9 W
- Noise
- Not published
- Measured ozone
- 0 ppb
- Filter class
- HEPA
- AHAM rule, 350 sq ft
- Clears it (234 needed)
Buyer-first: at this room size neither of the machines above is the best answer. The HPA6000 posts 257 certified smoke CADR — more than either — across 398 certified square feet, on 34.9 watts. That is $38 a year against the C710’s $43, with 0.00 ppb measured ozone, no ion stage, and a filter the register classifies HEPA rather than HEPA-Type.
The honest con: no washable pre-filter and no published noise figure, so in a heavy-shedding household you will be changing a full cartridge more often than a Coway owner changes a rinsable mesh.
Common questions
Is the Winix C710 better than the Coway Mighty?
Does the Coway AP-1512HH have an ionizer?
Which is better for pet hair specifically?
Is the Coway Mighty still sold?
Sources
- AHAM VERIFIDE directory of certified room air cleaners
- ENERGY STAR certified room air cleaners database
- Coway Airmega Mighty AP-1512HH specification
- Winix replacement filter and product listings
Figures were read on the dates shown against each source. If one has changed, or if we have got something wrong, tell us and we will correct the page.
Read next
- Pet hair & odorThe Best Air Purifiers for Pet HairWhy the washable pre-filter decides this category, and the certified units that have one.
- Pet allergiesLEVOIT Core 400S vs Coway Airmega Mighty AP-1512HHThe Core 400S is ENERGY STAR verified at 358 sq ft and 38 W. The Coway is in no register and draws 77 W.
- CADR & costWhat CADR actually meansThe cornerstone explainer: what CADR measures, why it resists gaming, and certified versus claimed.