Winix 5510 vs 5520: Odor Filters and Controls Compared

The primary difference between the Winix 5510 and the Winix 5520 is the odor filtration media and the control options, not room coverage. Both units carry the same room size rating of 392 square feet under the Association of Home Appliance Manufacturers (AHAM) Verifide program. The 5510 pairs an activated carbon sheet with Amazon Alexa and Google Home voice assistant compatibility. The 5520 uses an Advanced Odor Control (AOC) carbon pellet filter and lists Wi-Fi control through the Winix Smart App.

Winix supplies the specifications for both models. AirPurifierFirst noise and particle measurements cover the 5510. The two sets of figures come from different sources and test bases.

What Separates the 5510 From the 5520

Carbon filter media and voice connectivity account for the operational split between these models. The 5510 carries a published blended Clean Air Delivery Rate (CADR) of 253 CFM, and both share a 392 square foot AHAM rating. They share a multi-stage layout featuring a washable pre-filter, a True HEPA filter, and PlasmaWave ionization.

The odor stage is the main separation. The 5510 relies on an activated carbon sheet. The 5520 uses an AOC cartridge made of carbon pellets, which Winix states reduces VOCs and household odors. For controls, the 5510 connects to Amazon Alexa and Google Home alongside its app, while the 5520 lists Wi-Fi control through the Winix Smart App.

Room Rating and Ceiling Height Limits on the Shared 392 Square Foot Baseline

Both units carry the same certified 392 square foot AHAM Verifide rating. The AHAM testing methodology calculates room sizing by requiring 4.8 air changes per hour (ACH).

Ceiling height directly alters this coverage calculation. With 8-foot ceilings, a 392 square foot room contains 3,136 cubic feet of air space. In a room with 10-foot ceilings, that same floor plan contains 3,920 cubic feet. Operating a 253 CFM machine in a 10-foot ceiling room reduces its effective coverage to roughly 313 square feet if you want to maintain the full 4.8 air changes per hour. Homeowners evaluating flow rates can review how manufacturers calculate throughput by reading our guide to clean air delivery rate ratings.

Marketing materials for the 5520 introduce an alternative coverage claim of 1,882 square feet in 60 minutes. Winix also breaks this figure down as 941 square feet in 30 minutes, 627 square feet in 20 minutes, and 470 square feet in 15 minutes. Winix presents this as a longer-time claim, not the AHAM rating basis. Size your room according to the 392 square foot standard baseline rather than the 60-minute marketing figure.

Four-Stage Filtration Compares Activated Carbon Sheets Against AOC Pellets

The physical design of the carbon stage is the main mechanical difference between the Winix 5510 and 5520. Both units begin air intake with a washable pre-filter.

Behind the pre-filter sits the carbon media. The 5510 uses an activated carbon sheet. In contrast, the 5520 features an Advanced Odor Control (AOC) cartridge packed with individual carbon pellets. Winix states that this carbon pellet stage reduces VOCs and household odors.

Both purifiers follow carbon with a True HEPA filter to capture fine particulate matter. As explained in our breakdown of HEPA air purifiers, a dense filter media must sit tightly within the chassis because bypassing air will take the path of least resistance around unsealed frames. Testing by AirPurifierFirst noted that the 5510 uses a combined filter cartridge measuring 12.6 inches high by 11 inches wide. This cartridge is noticeably smaller than the 16.3-inch by 11-inch filter found in the older Winix 5500-2, reducing total available pleated surface area.

PlasmaWave Ionization on Both Models

Both models include Winix PlasmaWave technology as a final air treatment stage.

The 5510 provides a console button that switches off PlasmaWave. AirPurifierFirst verified that pressing this button switches ionization off. The 5510 also holds California Air Resources Board (CARB) compliance. For how ionizers work and why some units emit ozone, see ionizing air purifiers.

The 5520 also incorporates PlasmaWave, and Winix states that the technology works without producing harmful ozone. The 5520 carries Underwriters Laboratories (UL) certification alongside its AHAM rating.

Sound Output and Power Draw Across Fan Speeds

Noise production and electrical consumption vary across fan settings, but published figures for the two units cannot be compared head to head. Independent laboratory testing by AirPurifierFirst evaluated the 5510 across all five operational speeds in A-weighted decibels (dBA). Their acoustic instruments recorded 40.2 dBA in Sleep Mode, 41.5 dBA on Speed 1, 43.2 dBA on Speed 2, 52.7 dBA on Speed 3, and 65.7 dBA on Speed 4 (Turbo).

On electrical consumption, AirPurifierFirst measured the 5510 drawing 53.4 watts at its maximum Turbo speed. The unit also carries ENERGY STAR certification.

Winix states that the 5520 runs nearly silent at 23.5 decibels (dB) on its lowest fan setting. No lab-measured noise figures for the 5520 are in hand; Winix's own 23.5 dB is the only 5520 figure here. Because the figures come from different sources and test bases, they cannot be benchmarked against AirPurifierFirst's 40.2 dBA Sleep Mode measurement on the 5510.

Smart App Connectivity and Onboard Sensor Controls

Both models offer automated operation through onboard air monitoring sensors, but their wireless integrations serve different user preferences. The 5510 features an integrated particle sensor that monitors ambient particulate levels. When set to Auto Mode, the internal controller automatically increases fan speed when it detects dust or cooking smoke, then reduces airflow back to baseline when particle levels drop.

The 5510 expands remote management by integrating with Amazon Alexa and Google Home ecosystems alongside its standard mobile application. This allows voice control through Amazon Alexa or Google Home alongside its app. Its combined filter cartridge is rated up to 12 months under typical daily use.

The 5520 uses the Winix Smart App over Wi-Fi. The machine includes an integrated air quality sensor with Auto Mode and an LED air quality indicator. It also features a light-automated Sleep Mode and an LED filter replacement indicator.

AirPurifierFirst's PM2.5 Clearance Result for the 5510

In a closed 320 square foot chamber, AirPurifierFirst recorded PM2.5 falling from 104.9 to 4.7 micrograms per cubic meter in 60 minutes with the 5510, a 96 percent reduction.

No equivalent clearance figure for the 5520 is in hand.

Who Should Choose Which Model and When to Look Elsewhere

Choose the Winix 5510 if your daily routine relies on Amazon Alexa or Google Home voice control, or if you insist on a verified physical switch to shut off electronic ionization. The 5510 offers documented particle reduction data and AirPurifierFirst's decibel measurements across all fan speeds. For detailed specs on this specific model, see the Winix 5510 specifications.

Choose the Winix 5520 if you prefer an AOC carbon pellet filter, which Winix states reduces VOCs and household odors. For complete hardware specifications, see our dedicated Winix 5520 guide.

Neither purifier suits rooms larger than 392 square feet with standard ceilings. For an open floor plan or higher ceilings, consider a unit with a higher stated CADR, such as the Winix T810, whose published smoke CADR is 272 CFM. Buyers can also see Coway vs Winix or the best air purifiers. Verify your room square footage before choosing an air purifier.