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.
AHAM Verifide at 143 cfm smoke and 222 sq ft — figures Levoit reprints exactly — with a washable pre-filter and a choice of four carbon cartridges.
Pros
Cons
Verdict
The Vital 100S-P is the strongest-documented Levoit in this catalogue. AHAM measures it at 143 cfm smoke, 161 dust and 173 pollen, and sizes it at 222 sq ft — and Levoit's own page prints that same 143 and that same 222, which means the headline and the laboratory agree rather than merely coexist. The pre-filter is washable, the Auto Mode runs off an infrared dust sensor rather than a clock, and CARB lists the device Mechanical. The traps are all about names and parts. Vital 100 and Vital 100S are different machines taking different filters. The standard cartridge has three alternative carbon versions, so there are four right answers and three wrong ones when you reorder. And the code to order by, Vital 100S-RF, is not printed on Levoit's own filter page — you will find it in the listing title instead.
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, confirmed three ways. AHAM's directory prints 222 sq ft. AHAM's own rule gives 143 x 1.55 = 221.65. Levoit's specification table prints "1066 ft2 (1 ACH) / 222 ft2 (4.8 ACH)" — the same 222, and its stated 143 CFM is the same number AHAM measured. This is the third Levoit in this catalogue whose published coverage survives the arithmetic, which is worth saying because plenty of brands' figures do not.
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 | 143 cfm, AHAM Verifide and Levoit's own page states the same 143 CFM |
|---|---|
| AHAM suggested room size | 222 sq ft, equivalent to 4.8 air changes per hour |
| CARB | Certified, device type Mechanical, notified 2023-03-09, executive order G-23-052 |
| Noise | 23–52 dB |
| Power | 35 W stated by Levoit AHAM recorded 42.2 operating watts during its smoke test |
| Filter life | "Designed to last 6–12 months" stated on the filter's page and not on the purifier's |
| Replacement filter | Vital 100S Replacement Filter, code Vital 100S-RF plus three alternative carbon versions |
| Dust CADR | 161 cfm, AHAM Verifide |
|---|---|
| Pollen CADR | 173 cfm, AHAM Verifide its strongest measured figure |
| PM2.5 CADR | 152 cfm, AHAM Verifide under the newer PM2.5 measure |
| Manufacturer room size | 1066 sq ft at 1 air change per hour, 222 sq ft at 4.8 Levoit publishes both bases |
| Dimensions | 12.6 x 6.3 x 16.0 in |
| Weight | 8.6 lb |
| Pre-filter | Washable, per Levoit's own stage description |
| Sensor | Infrared Dust Sensor, which is what drives Auto Mode |
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 | 223 ft² |
| 4×/hour | The rate most allergy guidance assumes | 268 ft² |
| 2×/hour | General freshening in a room without a specific problem | 536 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 215 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 it Mechanical. The complete CARB list carries "Levoit | Air Purifier | LAP-V102S-WUS | Mechanical | 2023-03-09 | G-23-052", with the LAP-V102S-AUSR under the same order and the LAP-V102S-KUS under G-23-278 from 2023-11-02.
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 page describes no ionizer, no UV lamp and no ozone-producing stage, and offers no switch for one.
| Capability | What it needs | Status |
|---|---|---|
| Particle filtration | 3-stage cartridge, pre-installed | Included |
| Odour reduction | Activated carbon layer, part of the same cartridge | Included |
| Washable pre-filter | Built into the cartridge assembly; Levoit describes it as washable | Included |
| Auto mode with sensor | Infrared Dust Sensor, built in | Included |
| App and voice control | VeSync app; Alexa or Google Assistant account | Included |
| Replacement cartridge | Vital 100S-RF, sold separately — or one of the three alternative carbon versions | Sold separately |
| Stated filter interval | Not on the purifier's page; 6–12 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 Vital 100S replacement filter
Part Vital 100S-RF / Vital 100S-RF-TX / -SR / -PA / LRF-V102-YUS · "Designed to last 6–12 months", per Levoit's product page for this filter. ⚠️ THE SISTER MODEL IS DIFFERENT, AND THE NUMBERS DO NOT MATCH. Levoit's page for the Vital 100 (no S) cartridge says "every 6-8 months". Same range, adjacent model names, two different windows. If you have been going by a figure you read for a Vital 100, it does not describe this filter. No hours-per-day assumption is published behind either figure, so neither can be scaled arithmetically to your own use. What Levoit does give you here is a washable pre-filter: keeping it clean is the lever that actually moves the interval, and it costs nothing.
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.