Winix C610 Review
The machine behind the model number people actually search for. ENERGY STAR's own record says the C710 is a derivative of this unit, identical in performance — and this is the one the register measures for ozone.
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A quietly strong mid-price machine with one claim that does not line up. ENERGY STAR certifies the C610 at 248 CFM of smoke CADR across 384 square feet on 235 kWh a year, and Winix publishes both a filter price and an interval — making it one of only three machines here whose whole annual bill can be computed, at about $103. What does not line up: Winix markets PlasmaWave on it, and both registers classify the technology as fan-and-filter with no plasma stage.
This site owns no air purifiers and tests nothing. What follows is the certification record for one machine, read in full, plus the specifications its manufacturer publishes and the ones it leaves blank — and, because it is the reason most people arrive here, a straight answer about the C710.
First, the C710 question
Most of the search traffic for this machine uses the wrong model number, and the certification record explains why better than we could. ENERGY STAR’s entry for the C710 carries a note from the manufacturer:
So the two are the same machine for every purpose this site measures, which the figures bear out: 248 smoke CADR, 384 certified square feet, 235 kWh a year and 1.00 ppb of measured ozone on both.
There is a twist worth knowing. AHAM’s directory lists the C710 and not the C610; ENERGY STAR lists both. Re-checked on 2026-10-24, AHAM holds 341 certified models across 35 brands and the Winix entries among them are the 5300-2, 5500-2, C710, 5510, 5520, 5530, AT40 and AT41. So the variant with the stronger paperwork — two registers rather than one — is the variant that no longer has a live listing, and the one you can buy is certified through the program that also measures ozone. In practice you get the same machine and a different certificate.
The site’s older head-to-head still uses the C710 name for that reason — C710 against the Coway Airmega Mighty — and every figure in it applies to the C610 you would actually order.
The certified record
Read from ENERGY STAR’s certified room air cleaner database on 2026-10-24.
| Machine | Smoke CADR | Certified room | CFM per watt | kWh/yr | Measured ozone | Filter class |
|---|---|---|---|---|---|---|
| Winix C610 | 248 CFM | 384 sq ft | 6.2 | 235 | 1.00 ppb | HEPA-Type |
| Winix AT41 | 265 CFM | 410 sq ft | 5.6 | 272 | 0.00 ppb | HEPA-Type |
| Winix T810 | 270 CFM | 419 sq ft | 6.1 | 259 | 1.35 ppb | HEPA |
| Winix 5510 | 253 CFM | 392 sq ft | 4.6 | 323 | No figure exists | HEPA + carbon |
Two things stand out in that table. The C610 delivers 6.2 CFM per watt, which is 35% better than the 5510 that replaced Winix’s best-seller — $43 a year against $59 for a similar room. And it is the only machine in the range that pairs a mid-table measured ozone figure with a published filter price, which is where the next section goes.
The annual bill, which almost nobody lets you compute
The recurring half of ownership is normally unknowable before purchase, because manufacturers publish a filter price or an interval and rarely both — the full table of who publishes what. Winix publishes both for this machine: the 4-stage Filter Z (1712-0121-00) at $59.99, with the HEPA and carbon layers both dated at 12 months.
| Machine | Electricity | Filters | Total per year |
|---|---|---|---|
| Winix C610 | $43 | $60 (12-month cartridge) | $103 |
| Coway Airmega 400 | $67 | $129 (12-month set) | $196 |
| Honeywell InSight HPA4300 | $34 | Neither published | Not computable |
| Winix 5510 | $59 | Neither published | Not computable |
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.
That makes the C610 the cheapest machine on this site to own outright where the number is actually knowable. It is not the cheapest to run — the Honeywell InSight HPA4300 uses 185 kWh against 235 — but Honeywell publishes no filter price at all, so its total is a blank rather than a lower number.
The claim the registers do not back
The Amazon listing for this machine is titled “Winix C610 4-Stage Air Purifier with WIFI and PlasmaWave Technology”, and Winix’s own product page lists PlasmaWave among its features. Both registers say otherwise:
ENERGY STAR records the C610’s technology as “Fan and Filter”. That field is not a formality — the same register records “Fan and Filter, PlasmaWave” for Winix’s T810, so it distinguishes between the two when a plasma stage is fitted. AHAM classifies the C710 — the derivative Winix itself filed as performance-identical — as “Fan with Filter”.
We are not going to resolve that from the outside, and we are not going to pick the flattering reading. What we can do is point at the number that settles the part a buyer actually cares about. ENERGY STAR measures this machine at 1.00 ppb of ozone. Winix’s own AT40, classified fan-and-filter with no plasma anywhere, measures 0.00. The T810, with PlasmaWave on the record, measures 1.35. The C610 sits between them.
The coverage claim, and the part Winix gets right
Winix’s page says the C610 “also cleans rooms up to 1,844 sq ft in 1 hour”, which is the inflation this category runs on: it is the same machine counted at one air change an hour instead of the 384 square feet it is certified for at 4.8 — why the two figures differ by almost five times.
Credit where it is due, though: the same page prints “AHAM Verifide at 384 sq ft” and states the “Clean Air Changes per Hour” basis of 4.8 right next to it. Most manufacturers print the big number alone. A buyer who reads the spec table on Winix’s own site gets the honest figure, which is more than LEVOIT’s 1,718 square feet or Coway’s 3,285 offer.
In practical terms: 248 certified CFM clears a room of about 372 square feet under AHAM’s two-thirds rule, and about 310 square feet at the 6 air changes this site sizes pet households at. A 1,844 square foot open plan is not in the conversation.
What Winix does not publish
Three blanks, each of which costs the machine something in a comparison.
A noise range. Winix gives 22 dB at minimum and no figure for the setting the certified CADR is measured at — which is the setting that matters, because that is where the 248 CFM comes from. LEVOIT and Coway both publish a full range — why only the low-speed figure decides a bedroom.
A power draw. ENERGY STAR’s 6.2 CFM per watt and 235 kWh a year are certified, so the running cost is solid; the wattage itself is simply not on the page.
Whether PlasmaWave can be switched off. Winix documents the switch for the T810. For this model we could find nothing, which is why the product card below reads “ionizer status unclear” rather than making a choice for you.
Who should buy it
Buy it if you want a certified living-room machine on a budget and you value knowing the whole yearly cost before you commit. At 248 CFM and 384 certified square feet it covers the room most people are shopping for, it runs for about $43 a year, and the filter is a single cartridge at a published price rather than a set of three you have to source separately.
Buy something else if anyone in the house has asthma. The measured 1.00 ppb is harmless by any regulatory standard and still not zero, and the unresolved PlasmaWave question means you cannot be sure what is in the box — the Honeywell InSight HPA4300 and Winix’s own AT41 both measure 0.00 with the registers agreeing on a fan-and-filter classification.
Buy something else too if the room is genuinely large. At about 372 square feet by AHAM’s rule this is a living-room machine, not an open-plan one — what actually covers a large room.
Quick picks
The machine reviewed, the certified unit to cross-shop it against, and the two Winix alternatives — ranked on certified CADR against the room each is certified for.
| # | Product | Best for | Certified CADR | Price |
|---|---|---|---|---|
| 1 | No photo The unit reviewed Winix C610 248 certified CFM across 384 certified sq ft, and a yearly bill you can compute. | Living-room size on a known yearly cost | 248CFM smoke ENERGY STAR verified | |
| 2 |  The certified machine to cross-shop Honeywell InSight HPA4300 229 CFM at 7.4 CFM per watt, filter recorded HEPA, 0.00 ppb measured. | True HEPA on the lowest power draw | 229CFM smoke AHAM VERIFIDE | |
| 3 |  The Winix with PlasmaWave on the record Winix T810 270 CFM, filter recorded HEPA, and the plasma stage documented and switchable. | Large rooms, PlasmaWave line | 270CFM smoke ENERGY STAR verified | |
| 4 |  If a measured zero is non-negotiable Winix AT41 265 certified CFM, classified fan-with-filter, 0.00 ppb on the sibling AT40. | Pet allergies, whole living room | 265CFM smoke AHAM VERIFIDE |
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The machine, and what to weigh it against
Winix C610
Winix · model C610
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One of only three machines here whose whole annual bill can be computed: 248 certified CFM across 384 certified square feet, with a published filter price and interval. Its listing went Currently unavailable on 2026-10-31.
248 smoke / 252 dust / 262 pollen CFM · 250 PM2.5
- Certified room size
- 384 sq ft
- Advertised coverage
- 1,844 sq ft in 1 hour
- Energy / year
- 235 kWh
- Electricity / year
- $43
- Air per watt
- 6.2 CFM/W
- Noise
- 22 dB at minimum
- Measured ozone
- 1 ppb
- Filter class
- HEPA-Type
- AHAM rule, 350 sq ft
- Clears it (234 needed)
Ionizer status unclear
The sources conflict. Winix's own product page lists PlasmaWave on this model, while ENERGY STAR records its technology as 'Fan and Filter' with no plasma stage — and that same register does record 'Fan and Filter, PlasmaWave' for Winix's T810, so it distinguishes when one is fitted. AHAM classifies the C710, which Winix filed as a performance-identical derivative of this model, 'Fan with Filter'. Measured ozone is 1.00 ppb either way, against 0.00 on Winix's AT40. We report all of it rather than pick the flattering reading.
248 certified smoke CADR across 384 certified square feet at 6.2 CFM per watt — $43 a year of electricity, plus a $59.99 cartridge on a 12-month interval, for a knowable $103 total. Wi-Fi and an air-quality-sensor auto mode are on the register entry too.
The honest con: the PlasmaWave question above is unresolved, ozone measures 1.00 ppb rather than zero, the filter is classified HEPA-Type rather than HEPA, and Winix publishes a minimum noise figure only — so the bedroom question cannot be answered before you buy.
Honeywell InSight HPA4300
Honeywell · model HPA4300B
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The efficiency winner among true-HEPA units at living-room size: 229 certified smoke CADR on 31 watts, zero measured ozone, and a filter the register classifies as HEPA rather than HEPA-Type.
229 smoke / 238 dust / 245 pollen CFM · 233 PM2.5
- Certified room size
- 354 sq ft
- Energy / year
- 185 kWh
- Electricity / year
- $34
- Air per watt
- 7.4 CFM/W
- Power draw
- 31 W
- Noise
- Not published
- Measured ozone
- 0 ppb
- Filter class
- HEPA
- AHAM rule, 300 sq ft
- Clears it (200 needed)
No ionizer — filtration only
Both registers classify this unit as fan-and-filter only.
229 certified CFM across 354 certified square feet at 7.4 CFM per watt — the best air per watt on this site — with the filter recorded HEPA, 0.00 ppb measured, no ion stage and listings in both registers. Our full review.
The honest con: it is the opposite trade on the recurring bill — Honeywell publishes no filter price, no interval and no noise figure, so the total cost of ownership is a blank where the Winix gives you a number.
Winix T810
Winix · model T810
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Good certified numbers and a useful worked example of what PlasmaWave costs you: 1.35 ppb of measured ozone against 0.00 on Winix's own non-plasma AT40.
270 smoke / 272 dust / 277 pollen CFM · 271 PM2.5
- Certified room size
- 419 sq ft
- Energy / year
- 259 kWh
- Electricity / year
- $48
- Air per watt
- 6.1 CFM/W
- Noise
- Not published
- Measured ozone
- 1.35 ppb
- Filter class
- HEPA
- AHAM rule, 400 sq ft
- Clears it (267 needed)
PlasmaWave — can be switched off
ENERGY STAR records the technology as 'Fan and Filter, PlasmaWave'. Winix documents PlasmaWave as switchable.
270 certified CFM across 419 certified square feet, and the only Winix we cover whose filter the register classifies HEPA rather than HEPA-Type. Its plasma stage is documented, recorded by ENERGY STAR and switchable, which is exactly the clarity the C610 lacks.
The honest con: that clarity comes with the highest measured ozone figure of any machine on this site at 1.35 ppb, it costs more to run than the C610 at $48 a year, and Winix publishes neither a noise range nor a filter price for it.
Winix AT41
Winix · model AT41
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The best-evidenced pick for a pet household: the highest certified smoke CADR of any mid-price unit here, no ion generator, and a measured zero on ozone.
265 smoke / 259 dust / 244 pollen CFM · 261 PM2.5
- Certified room size
- 410 sq ft
- Energy / year
- 272 kWh
- Electricity / year
- $50
- Air per watt
- 5.6 CFM/W
- Power draw
- 45 W
- Noise
- Not published
- Measured ozone
- 0 ppb
- Filter class
- HEPA-Type
- AHAM rule, 380 sq ft
- Clears it (254 needed)
No ionizer — filtration only
AHAM classifies this model 'Fan with Filter' — no ion generator, unlike Winix's PlasmaWave line.
265 certified smoke CADR across 410 certified square feet, classified by AHAM as Fan with Filter, with 0.00 ppb measured on the sibling AT40 that carries the same certified figures. The most certified air in the Winix range with no ionizing question attached.
The honest con: no listing for this exact model clears our ASIN bar, so the buy link is a tagged Amazon search rather than a product page — the catalog offers the AT40, which is a different certification entry and was not substituted. It also draws 272 kWh a year against the C610’s 235, and Winix publishes no filter price for it either.
Common questions
Is the Winix C610 the same as the C710?
Why can I not buy the Winix C710 anymore?
Does the Winix C610 have PlasmaWave, and can it be switched off?
What does the Winix C610 cost to run for a year?
Is the Winix C610 big enough for my room?
Sources
- ENERGY STAR certified room air cleaners database
- AHAM VERIFIDE directory of certified room air cleaners
- Winix — C610 product specification (coverage, noise, filter, PlasmaWave)
- AHAM — air filtration standards and the two-thirds rule
- EPA — Guide to Air Cleaners in the Home
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 & odorWinix C710 vs Coway Airmega Mighty AP-1512HHThe C710 is AHAM-certified at 248 CFM with a published 235 kWh. The Coway is in no register and draws 77 watts.
- Pet hair & odorWinix vs CowayWinix is AHAM-listed and splits between PlasmaWave and plain models. Coway is ENERGY STAR-only and splits between the certified Airmegas and the unverified best-seller.
- Pet hair & odorWinix 5500-2 vs 5510The discontinued 5500-2 against the successor that replaced it, with both AHAM entries side by side — and why the 5520 and 5530 carry identical figures.
- Pet hair & odorThe Best Air Purifiers for Pet OdorWhy carbon mass decides odor performance, which units have it, and what a purifier cannot fix.
- Pet hair & odorBlueair vs WinixBlueair takes air-per-watt by a distance; Winix documents switchable PlasmaWave and washable pre-filters. Which matters depends on how much your animal sheds.