I compared the Winix T810 and Blueair 311i Max to determine which one offers better performance and which is the better buying option overall.
These are two cylindrical air purifiers with similar specifications, plenty of smart features, and high CADRs.
The Winix T810 has a CADR of 270 CFM (459 m³/h) and covers rooms of up to 419 sq. ft. (39 m²), while the Blueair 311i Max has a CADR of 250 CFM (425 m³/h) and is suitable for rooms up to 387 sq. ft. (36 m²).
Both have an air quality sensor, auto mode, smart app support, and voice control.
However, there are some important differences in filtration, noise, and power consumption that ultimately helped me decide which one I would choose.
Our Verdict
After comparing all the specifications and test results, I would pick the Winix T810 as the winner of this comparison.
The difference between these two air purifiers isn’t huge. The Blueair 311i Max actually achieved a slightly better result in our standard particle removal test and is significantly quieter at maximum speed when looking strictly at measured dBA values. It also uses less power.
However, the Winix has a higher CADR, uses a True HEPA filter, and its replacement filter lasts longer. In our PM1-to-Zero test, both needed just 27 minutes to bring PM1 down to zero at maximum speed.
Another thing that affected my decision is the sound they produce. The Winix is louder at maximum speed, but I find its sound more natural and easier to tolerate. The Blueair produces a noticeable buzzing sound at its highest speed, which can be quite irritating even though the measured noise level is lower. The same buzzing characteristic was also something that stood out in my individual Blueair 311i Max review.
Overall, I think the Winix T810 offers a slightly better package and is the air purifier I would choose.
If you have any questions about these two air purifiers, feel free to leave a comment in the comment section below.
Specs: Winix T810 Vs Blueair 311i Max
| Product Image |  30% off |  26% off |
| Manufacturer | Winix | Blueair |
| Model | T810 | 311i Max |
| Dimensions (inches / cm) | 11.3 × 20.4 × 11.3 inches (28.7 × 51.8 × 28.7 cm) | 19 x 12.5 x 12.5 inches (48 x 32 x 32 cm) |
| Weight (pounds / kg) | 10.2 lbs (4.6 kg) | 7.8 lb (3.56 kg) |
| Clean Air Delivery Rate (CADR) | 270 CFM (459 m³/h) | 250 CFM (425 m³/h) |
| Coverage (4.8 ACH)
Room Coverage Explanation: ACH is a measurement used in indoor air quality management to indicate how many times the air within a defined space is changed/moved through the filter media.
For more details, visit our ACH calculator tool. | 419 sq. ft. (39 m²) | 387 sq. ft. (36 m²) |
| Performance Ratings Performance Ratings Score Summary: 8.3 - Average Score (102 products) 9.9 - Best Score (1 products) 1 - Worst Score (1 products) We use the Temtop LKC-1000S laser particle meter to test the particle removal efficiency of every air purifier. It measures PM2.5 (µg/m3), PM10 (µg/m3), Particles (per/L), and HCHO (mg/m3) in the air, and also calculates the AQI. You can read more about our testing methodology here. | ||
| Filtration Technology | Pre-filter, True HEPA Filter, Carbon Filter, and PlasmaWave | Washable Pre-filter, Particle Filter, Activated Carbon Filter, and HEPASilent |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | up to 12 months | 6-9 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 102 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 45W | 30W |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 8.8 - Average Score (102 products) 10 - Best Score (2 products) 1.7 - Worst Score (1 products) We measure the power usage at all speeds using an energy meter, after which we calculate how much it would cost to use the device at a particular fan speed for one month. For reference, we use an energy price of $0.12 per kWh. You can read more about our testing methodology here. | ||
| Number of Fan Speeds | 5 - Sleep Mode, Speed 1, Speed 2, Speed 3, and Speed 4 | 4 - Sleep Mode, Speed 1, Speed 2, and Speed 3 |
| Air Quality Sensor Air Quality Sensor Summary: Out of 102 air purifiers tested, only 51 have the air quality sensor. | Yes | Yes |
| Air Quality Indicator | Yes | Yes |
| Auto Mode Auto Mode Summary: Out of 102 air purifiers tested, only 52 have auto mode functionality. | Yes | Yes |
| Smart App Smart App Summary: Out of 102 air purifiers tested, only 30 have smart app functionality. | Yes | Yes |
| Voice Control Voice Control Summary: Out of 102 air purifiers tested, only 29 have voice control functionality. | Yes | Yes |
| Other Features | PlasmaWave | Washable Pre-filter |
| Noise Level (low – high) | 40.1 – 66.7 dBA | 40.2 – 59.5 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.2 - Average Score (102 products) 10 - Best Score (1 products) 7.6 - Worst Score (1 products) We use a special noise measurement tool to test the noise level of the air purifier at all speeds. We measured the noise level on the dBA scale. You can read more about our testing methodology here. | ||
| Best Suited For | Living Rooms Allergies Pets Large Spaces Dust Smart Home Integration | Living Rooms Offices Low Energy Cost Large Spaces Dust Quiet Operation |
| Warranty | 2-year | 3-year |
| In-Depth Review | Winix T810 | Blueair 311i Max |
| Price |
Performance Test – Comparison
When it comes to room coverage and CADR, the Winix T810 has a slight advantage.
It has a CADR of 270 CFM (459 m³/h), making it suitable for rooms of up to 419 sq. ft. (39 m²). The Blueair 311i Max has a slightly lower CADR of 250 CFM (425 m³/h) and covers rooms up to 387 sq. ft. (36 m²).
We tested both air purifiers in a 320 sq. ft. (30 m²) room using the Temtop laser particle meter.
After running for 60 minutes at maximum speed, the Winix T810 improved air quality by approximately 95%, reducing PM2.5 from 103.1 to 5.6 µg/m³.
The Blueair 311i Max was slightly more efficient in this particular test, improving air quality by 96% and reducing PM2.5 from 109.1 to 4.7 µg/m³.
Particle Removal Tests - Comparison
We placed the Winix T810 Vs Blueair 311i Max in two separate tests and measured their performance using the Temtop laser particle meter.
So, if we look only at this test, the Blueair has a tiny advantage.
However, we also performed the PM1-to-Zero test, where we use the AirGradient ONE air quality monitor and measure how long it takes an air purifier to reduce PM1 from approximately 190–200 µg/m³ all the way down to zero in a 1,377 ft³ (39 m³) room. This test gives us another useful way to evaluate real cleaning speed.
At maximum speed, both air purifiers needed exactly 27 minutes to bring PM1 down to zero.
What I also like about the Winix is that we tested it at every fan speed. It needed 63 minutes at Speed 1, 48 minutes at Speed 2, 37 minutes at Speed 3, and just 27 minutes at Speed 4.
Considering the PM1 result, its higher CADR, and the overall performance it delivers, I would say the Winix T810 has a slight advantage in raw cleaning capacity, even though the Blueair achieved a 1% better result in our standard 60-minute particle removal test.
Overall, both are among the strongest performers in this class.
Noise Level Test – Comparison
This is probably the most interesting part of this comparison.
On paper, the Blueair 311i Max is clearly better optimized for noise. It produces 40.2 dBA in Sleep Mode and 59.5 dBA at maximum speed.
The Winix T810 produces 40.1 dBA in Sleep Mode, but it reaches as much as 66.7 dBA at maximum speed.
Noise Levels - Comparison
Comparison of noise levels at all fan speeds between the Winix T810 and Blueair 311i Max air purifiers.
What the numbers don’t show, though, is the type of sound these two air purifiers produce.
Even though the Winix is noticeably louder at maximum speed, its motor produces what I would describe as a more natural airflow sound.
The Blueair is quieter according to our noise meter, but at maximum speed it produces a noticeable buzzing sound. Personally, I find this buzz more irritating than the louder but cleaner sound produced by the Winix.
| Fan Speed | Winix T810 (dBA) | Blueair 311i Max (dBA) |
|---|---|---|
| Sleep Mode | 40.1 dBA | 40.2 dBA |
| Speed 1 (Low) | 41.6 dBA | 42.5 dBA |
| Speed 2 (Medium) | 48.5 dBA | 48.9 dBA |
| Speed 3 (High) | 54.3 dBA | 59.5 dBA |
| Speed 4 (Turbo) | 66.7 dBA | - |
This is one of those situations where I wouldn’t judge an air purifier only by its dBA measurement.
Technically, the Blueair is better optimized for noise, which is also reflected in its slightly higher noise rating. But from a subjective standpoint, I prefer the sound profile of the Winix T810.
Operating Costs – Comparison
When it comes to power use, the Blueair 311i Max has the advantage.
It uses a 30W motor, while the Winix T810 uses a 45W motor. More importantly, our actual measurements showed that the Blueair draws just 27.6W at maximum speed, compared with 42.8W for the Winix.
If you were to run both air purifiers at maximum speed, 24 hours a day for one month, at an electricity price of $0.12 per kWh, the Blueair would increase your electricity bill by approximately $2.42, while the Winix would cost about $3.75.
Monthly Power Consumption Cost - Comparison
Comparison of monthly power consumption costs for the Winix T810 and Blueair 311i Max air purifiers at all fan speeds.
There is another important difference, and that is filter longevity.
The Winix filter typically lasts up to 12 months, while the Blueair filter needs replacement approximately every 6 to 9 months.
| Fan Speed | Winix T810 (W + $/month) | Blueair 311i Max (W + $/month) |
|---|---|---|
| Standby | 0.8W ($0.07) | 0.4W ($0.04) |
| Sleep Mode | 1.7W ($0.15) | 3.3W ($0.29) |
| Speed 1 (Low) | 2.7W ($0.24) | 4.8W ($0.42) |
| Speed 2 (Medium) | 9.3W ($0.82) | 12.7W ($1.11) |
| Speed 3 (High) | 14.2W ($1.24) | 27.6W ($2.42) |
| Speed 4 (Turbo) | 42.8W ($3.75) | - |
So, while the Blueair is clearly more efficient when it comes to electricity use, its filters need to be replaced more frequently.
All in all, I would give the Blueair a slight advantage in operating costs, especially because of its very low power consumption.
Filtration Technology
There are some important differences in filtration technology.
The Winix T810 uses a pre-filter, True HEPA filter, carbon filter, and PlasmaWave, while the Blueair 311i Max uses a washable pre-filter, particle filter, activated carbon filter, and HEPASilent technology.
Neither device uses a particularly impressive carbon filter. Both rely on a fibrous filter coated with activated carbon rather than a pellet-based carbon filter, so I wouldn’t choose either of these as my first option specifically for heavy odors or VOCs.
The important difference is the main particle filtration stage.
The Winix uses a True HEPA filter, while the Blueair uses its particle filter together with HEPASilent electrostatic filtration.
Personally, I prefer the True HEPA approach used by the Winix.
The Winix also uses PlasmaWave technology, but it can easily be turned off if you don’t want to use it. Blueair’s HEPASilent system combines mechanical and electrostatic filtration and produces a small amount of ozone as a byproduct, although the device is CARB-certified and stays within permitted limits.
One advantage of the Blueair is its washable fabric pre-filter, which is extremely easy to maintain.
However, taking everything into account, I prefer the filtration setup on the Winix T810, primarily because it uses a True HEPA filter.
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