The short version: the Winix 5510 and 5520 are functionally the same air purifier. Same 4-stage filtration, same True HEPA + carbon Filter Q, same 253 CFM AHAM-verified CADR, same 392 sq ft room rating, same Wi-Fi app. The only confirmed difference is the front panel design — the 5510 has vertical stripes, the 5520 has a square waffle pattern — plus which retailers carry each. Buy whichever is cheaper when you shop; independent testing gives the 5510 a small edge on running costs.
By Sarah Bright · Published October 18, 2026
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The Direct Answer: Winix 5510 vs 5520
There is no performance winner here, because there is no performance difference to find. Winix sells the same purifier under two model numbers with two different front panels. Every specification that matters — CADR, room coverage, filtration stages, filter type, smart features, noise — is identical between the 5510 and the 5520 across every reputable source we checked.
So the buying decision is simple:
- Buy the Winix 5510 if it is cheaper (it usually is) or you prefer the vertical-stripe front design. Independent testing also found it slightly cheaper to run.
- Buy the Winix 5520 if it is on sale below the 5510's price, or you prefer the square waffle front design.
- Consider the Winix 5530 if you want the same machine in white — it is the 2026 colorway of this exact platform.
- Consider the Winix 5500-2 only if you find it significantly cheaper — it is the discontinued predecessor with no Wi-Fi.
The rest of this comparison documents exactly what is shared, what differs, and the traps to avoid — including retailer listings that invent differences that do not exist.
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Winix 5510 vs 5520: Head-to-Head Comparison Table
| Specification | Winix 5510 | Winix 5520 | Verdict |
|---|---|---|---|
| Filtration stages | 4-stage: washable pre-filter, AOC activated carbon, True HEPA, PlasmaWave | 4-stage: washable pre-filter, AOC activated carbon, True HEPA, PlasmaWave | Identical |
| Replacement filter | Filter Q (SKU 1712-0123-00) | Filter Q (SKU 1712-0123-00) | Identical — filters interchangeable |
| CADR (AHAM-verified) | Smoke 253 / Dust 252 / Pollen 247 CFM | Smoke 253 / Dust 252 / Pollen 247 CFM | Identical |
| Room size (AHAM) | Up to 392 sq ft | Up to 392 sq ft | Identical |
| Air changes | Up to 4.8 per hour in 392 sq ft | Up to 4.8 per hour in 392 sq ft | Identical |
| Smart features | Wi-Fi, Winix Smart app, smart sensors, auto mode, LED air-quality indicator | Wi-Fi, Winix Smart app, smart sensors, auto mode, LED air-quality indicator | Identical |
| PlasmaWave | Yes (on/off via app) | Yes (on/off via app) | Identical |
| Power | 65 W rated; 120 V / 60 Hz | 65 W rated; 120 V / 60 Hz | Identical on spec sheet |
| Noise | ~35–67 dBA across fan speeds (independent measurement) | ~35–67 dBA class (same platform) | Effectively identical |
| Dimensions | 15.9 × 11 × 25.2 in | 15.9 × 11 × 25.2 in (same platform) | Identical |
| Weight | ~13.3 lbs | ~13.3 lbs (same platform) | Identical |
| Warranty | 2 years (register on Winix's site to activate) | 2 years (register on Winix's site to activate) | Identical |
| Energy Star | Certified | Certified | Identical |
| Front panel design | Vertical stripes ("wave") | Square waffle pattern | The one real difference |
| Retailer availability | Carried by some retailers | Carried by other retailers | Differs by retailer, not by merit |
One independent review publication (HouseFresh) measured the 5520 drawing slightly more power than the 5510 in its own testing and found the 5510 delivered slightly better particle removal at quiet fan speeds — a small real-world edge for the 5510, not a spec-sheet difference.
| Product | Key Specs | Best Use Case | Standout Feature | Amazon Link |
|---|---|---|---|---|
| Winix 5510 Best for most buyers |
CADR 253/252/247 CFM · Filter Q · 392 sq ft · Wi-Fi app | Bedrooms and living rooms up to ~392 sq ft | Vertical-stripe front panel; slightly lower running costs than the 5520 in independent testing | Check Price |
| Winix 5520 Best if you prefer the look |
CADR 253/252/247 CFM · Filter Q · 392 sq ft · Wi-Fi app | Bedrooms and living rooms up to ~392 sq ft | Square-waffle front panel — the one real difference from the 5510 | Check Price |
Winix 5510: Detailed Profile
coming soon
Winix 5510
The 5510 is Winix's smart mid-range purifier and the official successor to the discontinued 5500-2. It pairs a 4-stage filtration system with Wi-Fi app control and an AHAM-verified 253 CFM smoke CADR — strong numbers for rooms up to 392 sq ft.
- 4-stage filtration: washable pre-filter, AOC activated carbon, True HEPA and PlasmaWave
- AHAM-verified CADR — smoke 253 / dust 252 / pollen 247 CFM, for rooms up to 392 sq ft
- Wi-Fi with the Winix Smart app, smart sensors, auto mode and LED air-quality indicator
Important limitation: The Filter Q combines HEPA and carbon into one replacement, so ongoing filter costs are fixed; smart control is app-only, with no Alexa or Google Home voice control, and at 25 inches tall it is furniture-sized, not discreet.
- CADR (AHAM-verified): Smoke 253 / dust 252 / pollen 247 CFM
- Replacement filter: Filter Q (SKU 1712-0123-00)
- Power / noise: 65 W · ~35–67 dBA (independent measurement)
Best for: Anyone purifying a bedroom, living room or open-plan space up to ~390 sq ft who wants app control and strong particle removal without paying for a flagship.
Overview: The 5510 is Winix's smart mid-range purifier and the official successor to the discontinued 5500-2. It pairs a 4-stage filtration system with Wi-Fi app control and an AHAM-verified 253 CFM smoke CADR — strong numbers for rooms up to 392 sq ft.
Key specifications: 4-stage filtration (washable pre-filter + AOC activated carbon + True HEPA + PlasmaWave) · Filter Q replacement (SKU 1712-0123-00), ~12-month life · AHAM CADR: smoke 253, dust 252, pollen 247 CFM · Room size up to 392 sq ft (4.8 air changes/hour) · Wi-Fi with Winix Smart app (scheduling, remote control, filter-life tracking) · Smart sensors with auto mode and LED air-quality indicator · Noise ~35–67 dBA from sleep to turbo (independent measurement at 3 ft) · 65 W rated power, 120 V · 15.9 × 11 × 25.2 in; ~13.3 lbs · 2-year warranty (registration on Winix's site required to activate, per reviewer documentation) · Energy Star certified · Made in South Korea.
Who should buy it: Anyone purifying a bedroom, living room, or open-plan space up to ~390 sq ft who wants app control and strong particle removal without paying for a flagship. Allergy and pet-dander sufferers are the core audience — the True HEPA + carbon combination with high air changes is exactly what that use case needs.
Limitations: The Filter Q combines HEPA and carbon into one replacement — unlike the old 5500-2, there is no separate washable carbon filter, so filter costs are what they are. The Winix Smart app is the only smart-home integration; there is no Alexa or Google Home voice control. PlasmaWave can only be toggled from the app, not the physical panel, on some firmware. At 25 inches tall it is not a discreet little unit — it is furniture.
Winix 5520: Detailed Profile
coming soon
Winix 5520
The 5520 is the same purifier as the 5510 with a different front panel — a square waffle pattern instead of vertical stripes. Everything inside the cabinet is shared: the same Filter Q, the same fan, the same sensors, the same Wi-Fi board.
- Identical 4-stage filtration and Filter Q replacement as the 5510 — filters are interchangeable
- Same AHAM-verified CADR — smoke 253 / dust 252 / pollen 247 CFM, rooms up to 392 sq ft
- Same Wi-Fi app control, smart sensors, auto mode and PlasmaWave as the 5510
Important limitation: Same platform limits as the 5510, plus one practical note: independent testing (HouseFresh) measured the 5520 drawing slightly more power and delivering slightly less particle removal at quiet fan speeds — buy it when it is cheaper, or for its design.
- CADR (AHAM-verified): Smoke 253 / dust 252 / pollen 247 CFM
- Replacement filter: Filter Q (SKU 1712-0123-00)
- Power / noise: 65 W · ~35–67 dBA class (same platform)
Best for: Buyers who prefer the waffle-pattern front, or who find the 5520 listed cheaper than the 5510 on the day — price and appearance are the only rational decision criteria.
Overview: The 5520 is the same purifier as the 5510 with a different front panel — a square waffle pattern instead of vertical stripes. Everything inside the cabinet is shared: the same Filter Q, the same fan, the same sensors, the same Wi-Fi board.
Key specifications: Identical to the 5510 in every published specification — 4-stage filtration, Filter Q, 253/252/247 CFM AHAM CADR, 392 sq ft room rating, Wi-Fi + app, smart sensors, PlasmaWave, 65 W, 2-year warranty, Energy Star. The only documented physical difference is the front cover design.
Who should buy it: Buyers who prefer the waffle-pattern front, or — more commonly — buyers who find the 5520 listed cheaper than the 5510 on a given day. Since the machines are identical, price and appearance are the only rational decision criteria.
Limitations: Same as the 5510 (shared platform), plus one practical note from independent testing: HouseFresh's measurements showed the 5520 drawing slightly more power than the 5510 and delivering slightly less particle removal at quiet fan speeds. The difference is small, but it means the 5520 is almost never the better buy at equal prices — only buy it when it is cheaper or you prefer the design.
Buying Guide: How to Choose Between Them (and Whether Either Fits Your Room)
1. Size the purifier to the room first
The 5510/5520 platform is AHAM-verified for rooms up to 392 sq ft. That rating assumes standard 8-foot ceilings. Practical guidance from independent reviewers: it is ideal for rooms of roughly 250–390 sq ft at a healthy air-change rate. For rooms much above 400 sq ft, or open-plan spaces with high ceilings, step up to a higher-CADR unit rather than running this one on turbo all day — turbo is loud (~67 dBA) and no one lives on turbo.
2. Understand what CADR actually tells you
CADR (Clean Air Delivery Rate) is the AHAM-verified measure of how fast a purifier removes smoke, dust, and pollen. The 5510/5520's 253 CFM smoke CADR is strong for the price class — it compares well against the Levoit Vital 200S-P (250 CFM) and beats the Coway Mighty (233 CFM smoke). Higher CADR = faster cleaning = lower fan speeds for the same result = less noise. This is why CADR-per-dollar is the single most useful comparison metric in air purifiers.
3. Budget for filters, not just the unit
Both models use Filter Q (SKU 1712-0123-00) with a ~12-month replacement life. The filter combines HEPA and carbon, so there is one purchase, once a year — simpler than multi-filter systems, but you cannot extend carbon life separately the way the old 5500-2's washable carbon filter allowed. Check the current Filter Q price before buying; it is the real long-term cost of ownership.
4. PlasmaWave: what it is and is not
PlasmaWave is Winix's bipolar ionization feature — it breaks down odors, chemical vapors, and some pollutants at a molecular level, working alongside the HEPA and carbon filters. Winix states it does not produce harmful ozone, and the technology is CARB-certified. If ionization concerns you anyway, it can be switched off (via the app). It is a supplement to filtration, not a substitute — the HEPA filter does the heavy particle-removal work.
5. The app is useful; the voice control is absent
The Winix Smart app covers scheduling, remote on/off, fan control, and filter-life tracking — the features that actually matter day to day. What you do not get is Alexa/Google Home integration. If voice control is a requirement, look at the Levoit Core 400S-P or Vital 200S-P instead.
6. Noise reality
Sleep mode measures around 35 dBA — genuinely bedroom-quiet. Speeds 1–2 stay under ~41 dBA, fine for living rooms. Speed 3 (~52 dBA) is noticeable; turbo (~67 dBA) is loud. The auto mode with the air-quality sensor is the practical answer: it ramps up when the air is dirty and settles back down, so you rarely hear the top speeds.
7. What each filtration stage actually does
It helps to know what you are paying for inside the cabinet:
- Washable pre-filter: catches large particles — pet hair, lint, coarse dust — before they reach the expensive filters. Rinse or vacuum it every couple of weeks; this is the maintenance step that extends everything else.
- AOC activated carbon filter: adsorbs odors and gases — cooking smells, pet odors, VOCs. Carbon is consumed as it works, which is why it is bundled into the annual Filter Q replacement rather than lasting indefinitely.
- True HEPA filter: captures 99.97% of particles at 0.3 microns — pollen, dust mite debris, mold spores, fine dust. This is the stage that matters most for allergies.
- PlasmaWave: bipolar ionization that breaks down some odors and chemical vapors at a molecular level. A supplement to the three physical stages, not a replacement for any of them.
8. How the smart features work in practice
The air-quality sensor samples the room and drives two things: the auto fan mode and the LED indicator (blue for good, amber/orange for moderate, red for poor — the standard Winix color scheme). In practice, owners report the unit sitting quietly on low most of the day and ramping up during cooking or when a dusty window opens — which is exactly the behavior you want. The app adds scheduling (run high while you are at work, quiet overnight), remote control, and filter-life tracking with replacement reminders. Set a schedule once and largely forget the unit exists.
9. Verify the listing before you buy
Because the 5510/5520 split is partly about retailer distribution, listings are where confusion happens. Before ordering: confirm the model number in the listing title matches the box you expect (5510 = vertical stripes, 5520 = waffle), check that the included filter is Filter Q (SKU 1712-0123-00), and confirm the seller is reputable — third-party marketplace sellers occasionally list the wrong front-panel variant. And remember the standing advice of this entire comparison: open both listings, compare the live prices, and buy the cheaper one.
Who Should Not Buy Either Model
- Rooms over ~400 sq ft or with high ceilings: you need more CADR. Look at the Winix T810 or a higher-CADR competitor rather than running this platform on turbo.
- Voice-control households: no Alexa or Google Home support — the app is the only smart interface.
- Buyers who want separate washable carbon: the old 5500-2 had it; Filter Q does not. If low long-term filter cost is your top priority, the Coway Mighty's cheaper filters may win the five-year math.
- Anyone expecting silent turbo: 67 dBA is objectively loud. Every purifier is loud on its highest setting; size correctly so you never need it.
The Winix Lineup: Where the 5510 and 5520 Sit
| Model | Position | Key differences from 5510/5520 |
|---|---|---|
| Winix 5500-2 | Discontinued predecessor | 232 CFM CADR, 360 sq ft, physical remote instead of Wi-Fi, washable carbon filter, Filter H (not interchangeable) |
| Winix 5510 | The smart mid-range pick | — (this comparison) |
| Winix 5520 | 5510 with waffle front panel | Front design only; different retailer distribution |
| Winix 5530 | 2026 white colorway of the 5510 | Same 253 CFM, Filter Q, 65 W, Wi-Fi — white finish |
| Winix T810 | Larger-room step-up | Higher CADR for bigger spaces |
| Winix C545 | Compact alternative | Smaller coverage, no app-based particle sensor of the 5510 class |
The 5500-2 question: the old 5500-2 was a legend — huge value, washable carbon filter, 232 CFM CADR across 360 sq ft. The 5510 is its official successor: slightly higher CADR (253 vs 232 CFM), Wi-Fi and app instead of a physical remote, and a smaller, more modern footprint. The trade-offs: Filter Q instead of Filter H (not interchangeable — do not buy the wrong filter), and no separate washable carbon stage, since the carbon is now bundled into the annual Filter Q cartridge. If you find remaining 5500-2 stock at a meaningful discount and do not care about app control, it remains a fine purifier. At near-equal prices, the 5510 is the better machine — and going forward, Filter Q is the filter Winix is manufacturing.
The 5530 question: per reviewer documentation, the 5530 is the white 2026 version of the 5510 — same 253 CFM AHAM rating, same Filter Q, same 65 W, same Wi-Fi app. If you want white and it is priced near the 5510, it is the same buy.
Comparisons
Winix 5510/5520 vs Levoit Vital 200S-P
The Vital 200S-P is the closest competitor: 250 CFM smoke CADR, ~388 sq ft, washable pre-filter, app control, and a laser particle sensor the Winix lacks — plus Alexa/Google compatibility. Choose the Winix for the carbon odor-filtration emphasis (AOC carbon + PlasmaWave) and the typically lower price; choose the Levoit for the sensor, voice control, and washable pre-filter.
Winix 5510/5520 vs Coway Airmega Mighty (AP-1512HH)
The Mighty is the long-running value champion: 233 CFM smoke CADR, 360 sq ft, and famously low filter costs. The Winix gives you more CADR (253 vs 233), Wi-Fi app control the Mighty lacks, and a larger room rating. The Coway counters with cheaper long-term filter costs and a longer track record. For raw value over five years, the Coway is hard to beat; for features and coverage per dollar today, the Winix 5510 edges it.
Do not compare the 5510 against the 5520 on "power"
Some retailer listings and thin affiliate pages imply the 5520 is the "more powerful" model. It is not — the published specifications are identical, and the only measured difference (HouseFresh) slightly favors the 5510. Treat any listing that ranks the 5520 above the 5510 on performance as unreliable.
6 Mistakes Buyers Make
- Paying more for the 5520 thinking it is an upgrade. It is not a step up — it is a design variant. Check both listings and buy the cheaper one.
- Buying for a room that is too big. 392 sq ft is the AHAM rating, not a suggestion to stretch. Above ~400 sq ft, buy a bigger purifier instead of running this one on turbo.
- Forgetting the filter math. Filter Q is a once-a-year purchase, but it is the real cost of ownership. Price it before you buy the unit.
- Assuming "True HEPA" means the same everywhere. It is a meaningful standard (99.97% of 0.3-micron particles), but CADR and room sizing matter more than the label — a high-CADR "True HEPA" in the right room beats a low-CADR one every time.
- Running PlasmaWave anxiously. It is CARB-certified and Winix states it produces no harmful ozone; if it still bothers you, turn it off in the app. Do not avoid an otherwise right purifier over it — and do not buy the purifier for it either.
- Trusting retailer-exclusive model numbers as different machines. The 5510/5520 split exists partly because different retailers carry different variants. The model number tells you where it was sold, not what is inside.
SERP Danger Rebuttal: Bad Advice We Keep Seeing
"The 5520 covers up to 1,882 sq ft." Seen on a thin affiliate page. Nonsense — the AHAM-verified rating for both models is 392 sq ft. Any coverage figure several multiples above the AHAM rating is invented; ignore the page.
"The 5520 is the more powerful / premium model." Seen on retailer-adjacent content. False — every published specification is identical, and independent testing found no performance advantage for the 5520. The model number reflects retailer distribution and front-panel design, not a performance tier.
Price claims in reviews. Several review pages quote specific prices ("$189.99", "$130–$180") that change constantly. We state no prices in this comparison for exactly that reason — check both listings live and buy the cheaper one.
"Washable HEPA filter." The washable part is the pre-filter, not the HEPA filter. The True HEPA + carbon Filter Q is a replace-only cartridge (~12 months). Anyone telling you to wash the HEPA filter is giving advice that will destroy it.
Frequently Asked Questions
Note: the workbook assigns only the primary keyword to FA3173 — no question keywords. These FAQs are drawn from the real buyer questions this comparison must answer (PAA-style), labeled provisional.
No performance difference. Multiple review publications (AirPurifierFirst, AirPurifiersHub) confirm the only difference is the front panel design — vertical stripes on the 5510, a square waffle pattern on the 5520 — plus which retailers stock each. CADR, filtration, filters, smart features, and room coverage are identical. (Provisional — researcher-compiled from cited review sources, not a workbook question keyword.)
Yes. Both use Filter Q (Winix SKU 1712-0123-00), a combined True HEPA + activated carbon cartridge with a ~12-month life, behind a washable pre-filter. Filters are fully interchangeable between the two models. (Provisional.)
Effectively the same — they share the fan and cabinet platform. Independent measurements of the 5510 show ~35 dBA on sleep rising to ~67 dBA on turbo. One publication's testing found the 5510 slightly better at quiet fan speeds, but the difference is small. (Provisional — HouseFresh measurements for the 5510.)
Up to 392 sq ft per the AHAM-verified rating (4.8 air changes per hour), and independent reviewers consider ~250–390 sq ft the practical sweet spot. Above ~400 sq ft or with high ceilings, buy a higher-CADR unit. (Verified against AHAM figures via Sylvane/retailer spec listings; room-guidance provisional.)
Only at a meaningful discount. The 5500-2 is the discontinued predecessor: 232 CFM CADR, 360 sq ft, no Wi-Fi (physical remote), and a different filter (Filter H — not interchangeable with Filter Q). The 5510 is the better machine at near-equal prices. (Provisional.)
The Filter Q cartridge lasts ~12 months; the pre-filter is washable and reusable. PlasmaWave can be switched off in the Winix Smart app if you prefer to run filtration only. (Per reviewer documentation of the manual and app; provisional.)
No. The 5510/5520 use Filter Q (SKU 1712-0123-00); the 5500-2 uses Filter H. They are different sizes and not interchangeable. This is the one compatibility trap in the Winix lineup — double-check the filter SKU against your model number before ordering replacements. (Provisional — per reviewer documentation.)
Winix states PlasmaWave does not produce harmful ozone, and the technology is CARB-certified (California's air-cleaner ozone standard). If ionization still concerns you, it can be switched off in the app and the unit runs as a conventional HEPA + carbon purifier. We make no medical claims either way — this is a filtration appliance, not a health device. (Manufacturer claim attributed; provisional.)
Deliberately Excluded Claims (log)
- No prices, discounts, or availability figures — prices for both models fluctuate constantly; the advice is "buy whichever is cheaper," which requires no price.
- No claim that the 5520 is more or less powerful than the 5510 beyond the one documented independent finding (HouseFresh: slightly higher power draw, slightly lower quiet-speed performance for the 5520) — presented as one source's measurement, not a spec difference.
- No dimensions/weight stated independently for the 5520 — stated as "same platform" rather than inventing a separate spec table row from a single source.
- No voice-assistant support claimed for either model — the Winix Smart app is app-only per reviewer documentation.
- No CADR figures beyond the AHAM-verified 253/252/247 CFM — HouseFresh's independent PM1/PM2.5 measurements are noted as independent, not presented as official specs.
- No 5530 recommendation beyond the documented "white 2026 version of the 5510" (single reviewer source — attributed, not asserted as manufacturer-confirmed).
- No medical or health-outcome claims — "helps with allergies" framed as particle/allergen removal, not treatment.
Final Verdict
The Winix 5510 vs 5520 question has a boring answer, and boring is good news: you cannot buy the wrong one. They are the same purifier — same 253 CFM AHAM-verified CADR, same 4-stage filtration with Filter Q, same 392 sq ft room rating, same Wi-Fi app — wearing two different front panels for two different sets of retailers.
Buy the Winix 5510 if it is cheaper (it usually is), which also gets you the small measured edge in running costs. Buy the Winix 5520 if it is on sale below the 5510 or you prefer the waffle front. Consider the Winix 5530 if you want white. And whatever you do, ignore any listing that tells you one of them is more powerful — that listing is inventing differences to earn your click.
Final Recommendations
Best for most buyers: Winix 5510 — the same purifier as the 5520 for usually less money, with a small running-cost edge in independent testing
Best if you prefer the look: Winix 5520 — identical internals to the 5510 behind a waffle-pattern front; the buy when it is the cheaper listing
Related Guides
- Winix Air Purifier Guide — the Winix brand lineup in depth
- Winix 5500-2 Guide — the discontinued predecessor: specs, filters, and whether old stock is worth it
- Winix Air Purifier Review — full review coverage of the Winix range
- Best Air Purifier for Allergies — how the 5510/5520 compare for allergy sufferers
- Best Air Purifier for Dust — CADR-per-dollar rankings for dust removal
- Winix T810 Guide — the larger-room step-up in the Winix line
