The QuietlyGuide collection
Compare room coverage, everyday controls and the filter care each option needs.
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Worth knowing Limited airflow for larger rooms
Room coverage uses high airflow, not sleep mode.
Check price at Levoit Read the detailsWorth knowing High speed is more audible
Check price at Coway Read the detailsWorth knowing Full speed was loud in the linked test
Manufacturer and reviewer dimensions differ; check before buying.
Check price at Winix Read the detailsWorth knowing Electrostatic filtration cannot be switched off separately
Best Buy listed model 110829; Blueair direct showed a restock notice.
Check price at Best Buy Read the detailsThe details, together
Coverage below uses manufacturers’ stated 4.8-ACH figures. These are not quiet-mode coverage ratings. CADR particle types and sound-test methods differ; a filter-efficiency percentage alone does not establish room-cleaning speed.
Comparing all 4 products. “Not listed” means the guide does not provide that specification.
Scroll across to compare products
| What matters to you | LevoitCore 300S-P | CowayAirmega Mighty AP-1512HH | Winix5510 | BlueairBlue Pure 311i Max |
|---|---|---|---|---|
| Who it suits | Consider for a compact purifier for a smaller room | Consider for physical controls without an app | Consider for a medium room with app control | Consider for a lighter purifier with app scheduling |
| A useful strength | Compact body | Automatic and eco modes without an app | App control and automatic mode | 7.8 lb body, according to Blueair |
| A trade-off to consider | Limited airflow for larger rooms | High speed is more audible | Full speed was loud in the linked test | Electrostatic filtration cannot be switched off separately |
| Specifications | ||||
| Published room size at 4.8 ACH | 219 sq ft | 361 sq ft | 392 sq ft | 439 sq ft, current manufacturer technical table |
| Published CADR | 141 cfm; particle type not stated on listing | 233 cfm smoke; 246 dust; 240 pollen | 253 cfm smoke; 252 dust; 247 pollen | 283 cfm smoke; 314 dust; 365 pollen |
| Controls | On-device, VeSync app and auto mode | On-device, auto and eco modes; no app | On-device, Winix app and auto mode | On-device, Blueair app and auto mode |
| Dimensions (W × D × H) | 8.7 × 8.7 × 14.2 in | 16.8 × 9.6 × 18.3 in | 13.59 × 8.27 × 22.17 in | 12.5 × 12.5 × 19 in |
| Replacement filter | Core 300 Series Original Filter | AP-1512HH / Mighty compatible filter set | Winix Filter Q, SKU 1712-0123-00 | Blueair F3MAX particle + carbon; verify 311i Max label |
| Noise context | 22–50 dB claimed by maker; not paired with CADR | 24–53 dB(A) claimed by maker; test conditions differ | HouseFresh found high speed loud; do not equate sleep mode with rated coverage | 23–50 dB claimed by maker; independent results differ |
| Retail package checked | Not listed | Not listed | Not listed | Best Buy 110829, White/Seabed; no subscription implied |
| Evidence and availability | ||||
| Evidence | 2 linked sources; limitations noted below | 2 linked sources | 3 linked sources; limitations noted below | 5 linked sources; limitations noted below |
| Customer opinion | None yet | None yet | None yet | None yet |
| Can you still buy it | Listed by maker, checked 4 October 2026 | Listed by maker, checked 4 October 2026 | Listed by maker, checked 4 October 2026 | At a retailer, checked 4 October 2026 |
Specifications come from the sources listed under each product. Check the retailer for the exact model, package and current details.
Checked 4 October 2026 against Levoit US product page. Product page has a purchase option. Confirm selected package and delivery availability at the shop.
About the evidence: Room size is the manufacturer’s high-airflow figure. Sleep mode does not provide the same cleaning rate. Current product naming includes -P; the manufacturer identifies the underlying model as Core 300S.
Start with the room you actually want to clean. This is the smallest body and lowest published airflow in this shortlist, which can suit a smaller room but offers less capacity for a large living area.
RTINGS describes the Core 300S as compact and convenient, while noting slower particle removal at quieter speeds. Levoit markets this offer as Core 300S-P and lists Core 300S as its model. App scheduling and a small footprint are its main reasons to consider it.
Sources: Levoit — product specifications and package · RTINGS — Core 300S test
| Published room size at 4.8 ACH | 219 sq ft |
|---|---|
| Published CADR | 141 cfm; particle type not stated on listing |
| Controls | On-device, VeSync app and auto mode |
| Dimensions (W × D × H) | 8.7 × 8.7 × 14.2 in |
| Replacement filter | Core 300 Series Original Filter |
| Noise context | 22–50 dB claimed by maker; not paired with CADR |
Source: https://levoit.com/products/core-300s-p-smart-air-purifier
We have not added customer-review summaries or recorded price history for this product. The summary above is based on the linked sources. Visit the retailer for current prices and customer reviews.
Checked 4 October 2026 against Coway US product page. Product page has a purchase option. Confirm selected package and delivery availability at the shop.
Consider the original Mighty if you prefer to set the purifier on the unit itself. Its automatic mode offers some convenience without a phone, while filter changes and pre-filter cleaning remain part of ownership.
RTINGS found useful particle removal and automatic control, but more noise at high fan speed. Coway lists 361 square feet at 4.8 air changes per hour. The original Mighty has no companion app and includes an ionizer that can be switched off.
Sources: Coway — product specifications and package · RTINGS — original AP-1512HH test
| Published room size at 4.8 ACH | 361 sq ft |
|---|---|
| Published CADR | 233 cfm smoke; 246 dust; 240 pollen |
| Controls | On-device, auto and eco modes; no app |
| Dimensions (W × D × H) | 16.8 × 9.6 × 18.3 in |
| Replacement filter | AP-1512HH / Mighty compatible filter set |
| Noise context | 24–53 dB(A) claimed by maker; test conditions differ |
Source: https://cowaymega.com/products/mighty-ap-1512hh
We have not added customer-review summaries or recorded price history for this product. The summary above is based on the linked sources. Visit the retailer for current prices and customer reviews.
Checked 4 October 2026 against Winix US product page. Product page has a purchase option. Confirm selected package and delivery availability at the shop.
About the evidence: Physical dimensions here follow Winix; the linked review lists different dimensions. Measure against the manufacturer’s exact model specification before buying.
Consider 5510 if you want remote controls and more published airflow than the compact Levoit. Choose around the fan speed you will tolerate for hours, rather than assuming the highest-speed room rating also applies overnight.
HouseFresh bought and tested the 5510, finding useful particle removal at full speed but a substantial drop when run quietly. Winix lists a 392-square-foot AHAM room rating, app control and replaceable filters. The test concerns 5510, not the older 5500-2.
Sources: Winix — product specifications and package · HouseFresh — purchased 5510 test · Winix — Filter Q compatibility
| Published room size at 4.8 ACH | 392 sq ft |
|---|---|
| Published CADR | 253 cfm smoke; 252 dust; 247 pollen |
| Controls | On-device, Winix app and auto mode |
| Dimensions (W × D × H) | 13.59 × 8.27 × 22.17 in |
| Replacement filter | Winix Filter Q, SKU 1712-0123-00 |
| Noise context | HouseFresh found high speed loud; do not equate sleep mode with rated coverage |
Source: https://www.winixamerica.com/product/5510/
We have not added customer-review summaries or recorded price history for this product. The summary above is based on the linked sources. Visit the retailer for current prices and customer reviews.
Checked 4 October 2026 against Best Buy SKU 6553253, model 110829. Best Buy listed the White/Seabed 311i Max with an Add to cart action. Blueair showed a restock notice for its own listing. Seller availability varies by location and can change.
About the evidence: Room size uses Blueair’s 4.8-ACH technical figure, which differs from its headline. Blueair support identifies F3MAX for the 311i Max; the maker’s own filter FAQ has conflicting 311i+ wording. Match the model label before ordering parts. The shopping link goes to Best Buy model 110829 because Blueair direct showed a restock notice.
Consider the 311i Max if you prefer a lighter body and app controls. Best Buy listed the White/Seabed model 110829 at the check; Blueair’s own shop showed a restock notice. Confirm current availability and avoid an unwanted filter subscription.
HouseFresh found useful particle removal and modest energy use in its tested sample, with reduced cleaning at quiet speeds. Blueair combines mechanical and electrostatic filtration; that electrostatic stage is not independently switchable. The technical table lists 439 square feet at 4.8 air changes per hour.
Sources: Blueair — product specifications and package · HouseFresh — Blue Pure 311i Max test · Blueair — 311i Max filter listing and compatibility notes · Best Buy — model 110829 retail listing · Blueair Support on Target — F3MAX for 311i Max
| Published room size at 4.8 ACH | 439 sq ft, current manufacturer technical table |
|---|---|
| Published CADR | 283 cfm smoke; 314 dust; 365 pollen |
| Controls | On-device, Blueair app and auto mode |
| Dimensions (W × D × H) | 12.5 × 12.5 × 19 in |
| Replacement filter | Blueair F3MAX particle + carbon; verify 311i Max label |
| Noise context | 23–50 dB claimed by maker; independent results differ |
| Retail package checked | Best Buy 110829, White/Seabed; no subscription implied |
Source: https://www.blueair.com/products/blue-pure-311i-max
We have not added customer-review summaries or recorded price history for this product. The summary above is based on the linked sources. Visit the retailer for current prices and customer reviews.
Prices change constantly; check the shop before buying. Summaries are written in our own words from the sources linked on each product. We do not test products in a lab.
