Blueair
Blue Pure 211+ Auto
AHAM Verifide at 353 cfm smoke CADR for a 550 sq ft room, and Blueair publishes exactly those numbers rather than a flattering pair — which almost nothing else in this catalogue does. It draws 4 W on its lowest speed.
An AHAM Verifide smoke CADR of 90 cfm and a 140 sq ft room size — and unusually, Levoit's own specification table prints exactly the same 140 sq ft the certifying body does.
Pros
Cons
Verdict
The Core 200S-P is the rare small purifier whose numbers reconcile. AHAM measures it at 90 cfm smoke and sizes it at 140 sq ft; Levoit's own specification table prints that same 140 sq ft at 4.8 air changes, and AHAM's published formula independently produces 139.5. Manufacturer, certifier and arithmetic agree, and the full specification set — noise, wattage, dimensions, weight — is published rather than left blank. CARB lists it Mechanical, so there is no electronic stage to think about. Two things to know before buying. Levoit publishes no replacement interval on this page, and the same UPC appears on two different Levoit filter pages, so order the consumable by name or by listing and not by barcode. And 140 sq ft is genuinely small: the 672 sq ft you will see quoted is the one-air-change figure.
Price, seller and package contents change. Check the variant on Amazon before you buy.
Who it's for
Who should skip it
How this coverage figure is stated
4.8 air changes per hour, and this figure survives three separate checks. AHAM's directory prints 140 sq ft for this model. AHAM's own published rule is room size = smoke CADR x 1.55, and 90 x 1.55 = 139.5. Levoit's specification table prints "Ideal Room Size: 672 ft2 (1 ACH) / 140 ft2 (4.8 ACH)" — the same 140. A manufacturer and a certifying body agreeing to the square foot is rarer than it ought to be.
Always compare two purifiers at the same air-change rate; manufacturers pick different ones and the headline square footage is not otherwise comparable.
| Smoke CADR | 90 cfm, AHAM Verifide and Levoit's own page states the same 90 CFM |
|---|---|
| AHAM suggested room size | 140 sq ft, equivalent to 4.8 air changes per hour |
| CARB | Certified, device type Mechanical, notified 2020-09-28, executive order G-20-216 |
| Noise | 27–48 dB |
| Power | 37 W stated by Levoit AHAM recorded 44.3 operating watts during its smoke test |
| Filter life | Not stated on the purifier's page. Levoit states 6–8 months on the filter's own page |
| Replacement filter | Core 200S-RF order it by that code or by the listing, not by its UPC |
| Dust CADR | 101 cfm, AHAM Verifide |
|---|---|
| Pollen CADR | 119 cfm, AHAM Verifide its strongest measured figure |
| PM2.5 CADR | 95 cfm, AHAM Verifide under the newer PM2.5 measure |
| Manufacturer room size | 672 sq ft at 1 air change per hour, 140 sq ft at 4.8 Levoit publishes both bases |
| Dimensions | 8.1 x 8.1 x 12.6 in |
| Weight | 6.6 lb |
Our calculation, not the manufacturer’s
| Air changes | When you want this rate | Room it suits |
|---|---|---|
| 4.8×/hour | Wildfire smoke, allergy season, a room you are sensitive in | 141 ft² |
| 4×/hour | The rate most allergy guidance assumes | 169 ft² |
| 2×/hour | General freshening in a room without a specific problem | 338 ft² |
Worked from the CDC/NIOSH relation
air changes = (CADR × 60) ÷ (area × ceiling height),
assuming an 8 ft ceiling. Change the ceiling height and these
numbers change. AHAM’s own consumer rule — a smoke CADR of at
least two-thirds of the room’s area — puts the ceiling for this
unit at about 135 ft², which is the same arithmetic
at roughly five air changes an hour.
You can check this at home. In a closed room of the size in the first row, PM2.5 should halve about every nine minutes at top speed once its source stops. A monitor shows whether this unit manages that in your home. How to run the test
Ionizer and ozone
CARB lists this model as Mechanical, which is the classification you want if you would rather the machine simply filtered air. CARB's complete list carries "Levoit | Smart True HEPA Air Purifier | Core 200S | Mechanical | 2020-09-28 | G-20-216", with separate rows for the LAP-C201S variants.
Mechanical means California's certifier identified no ozone-generating component, so the unit was not subject to the ozone emission test that Electronic devices must pass. Levoit's product page describes no ionizer, no UV lamp and no ozone-producing stage, and offers no switch for one. There is nothing here to manage or turn off.
| Capability | What it needs | Status |
|---|---|---|
| Particle filtration | 3-stage cartridge, pre-installed | Included |
| Odour reduction | Activated carbon layer, part of the same cartridge | Included |
| App and voice control | VeSync app; Alexa or Google Assistant account | Included |
| Night light | Built in | Included |
| Replacement cartridge | Core 200S-RF, sold separately | Sold separately |
| Washable pre-filter | Levoit does not state that any stage is washable | Not verified |
| Stated filter interval | Not on the purifier's page; 6–8 months on the filter's page | Not verified |
Package contents vary by variant and seller. Check what is in the box on the Amazon listing before you buy. “Not verified” means the manufacturer does not document it either way — not that it is missing. “Not offered” is the other thing: the manufacturer does document it, and the answer is that this model does not have it.
Levoit Core 200S replacement filter
Part Core 200S-RF / ⚠️ DO NOT ORDER THIS ONE BY UPC. Levoit's page gives UPC 810043372893 · "It is recommended to replace filters for every 6-8 months", per Levoit's product page for this filter. ⚠️ That is a THIRD different window from the same manufacturer. Levoit states 6-12 months for the Vital 100S-P, 6-8 for the Vital 100, 6-8 here, nothing at all on the Core 400S and Core Mini pages, and its maintenance article gives 6-12 for particle stages and 3-6 for carbon. None of those figures carries an hours-per-day assumption, so none of them can be scaled to your own use or compared with another. The practical reading: treat any Levoit interval as a reminder rather than a measurement, and watch airflow at a speed you actually use.
Checked against the AHAM Verifide directory, CARB's certified air-cleaner list and the manufacturer's own pages. We did not test this unit. Nothing here is a measurement of ours: every figure is either documented by the manufacturer or published by an independent standards or testing body, and where the two disagree this page says so.
Blueair
AHAM Verifide at 353 cfm smoke CADR for a 550 sq ft room, and Blueair publishes exactly those numbers rather than a flattering pair — which almost nothing else in this catalogue does. It draws 4 W on its lowest speed.
Blueair
AHAM Verifide at 283 cfm smoke for a 439 sq ft room, and the rare case where the electrostatic question has an actual number attached: ENERGY STAR measured its ozone emission at 2 ppb.
Blueair
A compact tower with an AHAM Verifide smoke CADR of 123 cfm and a 190 sq ft AHAM room size. CARB classifies it Electronic, which is a consequence of how Blueair's HEPASilent works rather than a fault.