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Levoit Vital 100S Smart Air Purifier — Review and Specs

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Tested by PurifierBeast Last tested: — 30+ hours of hands-on review

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Levoit Vital 100S vs Core 300S — Which to Choose

The Vital 100S and Core 300S are both entry-level smart Levoit purifiers with VeSync app integration, but they serve different room sizes. Here is the factual comparison to help you choose.

Coverage and CADR
Levoit Vital 100S: CADR approximately 100–110 (AHAM-verified), 183 sq ft at 4.8 ACH.
Levoit Core 300S: CADR 141 (AHAM-verified), 219 sq ft at 4.8 ACH.
The Core 300S delivers 36 more square feet of verified coverage at the same ACH rate. For rooms between 150–219 sq ft, the Core 300S is the better-sized unit. For rooms under 150 sq ft (a small bedroom corner, desk use, or closet-converted office), the Vital 100S is appropriately sized and $20–30 less expensive.

Price
Vital 100S: $60–90.
Core 300S: $90–120.
The $20–30 price difference between the two models is modest. For most buyers choosing between them, the Core 300S's additional coverage range is worth the modest premium unless the room is genuinely under 150 sq ft.

Filtration
Both use 3-stage True HEPA filtration: pre-filter, True HEPA (99.97% at 0.3 microns), activated carbon. The filtration architecture is identical. The difference is entirely in the fan capacity and coverage range — the Core 300S moves more air per minute for a larger room.

Smart Features
Both the Vital 100S and Core 300S include: VeSync app control (iOS/Android), Alexa and Google Home voice compatibility, Auto Mode via built-in particle sensor, scheduling, sleep mode. The smart feature set is functionally identical. If smart features are the primary reason you are choosing between the two, the feature parity makes room size the deciding factor.

Noise Level
Vital 100S: under 24 dB in sleep mode.
Core 300S: approximately 24 dB in sleep mode.
Both are quiet enough for undisturbed bedroom use at sleep mode fan speeds. At maximum fan speed, both produce more noise (approximately 48–52 dB) — auto mode and sleep mode are the appropriate bedroom settings for both.

Verdict — Who Should Buy Each
Buy the Vital 100S if: your room is under 150 sq ft (small bedroom, desk nook, dorm room, home office corner) and budget is a priority. Buy the Core 300S if: your room is 150–300 sq ft, or you want more coverage headroom in a small room at slightly higher fan efficiency. For most buyers who are uncertain between the two, the Core 300S is the better default choice at a modest price premium.

Vital 100S Filter Replacement and Maintenance

The Levoit Vital 100S uses a combined 3-stage filter — pre-filter mesh, True HEPA layer, and activated carbon layer in one replaceable unit. Here is the full maintenance schedule and cost breakdown.

Filter Type and Replacement Interval
The Vital 100S uses a single combined replacement filter (all three stages in one unit). Levoit recommends replacement every 6–8 months under standard use. Under heavier use — continuous operation in high-dust, high-pet, or high-smoke environments — expect a 4–6 month replacement cycle. The VeSync app tracks filter usage and sends a replacement reminder based on accumulated operating hours.

No Washable Components
Unlike some purifiers that include a washable pre-filter, the Vital 100S has no washable components — the entire filter assembly is replaced as one unit. Do not wash the Vital 100S filter; water damages the HEPA fiber matrix and permanently degrades filtration efficiency. When the filter replacement reminder triggers, replace the full assembly.

Filter Cost
OEM Levoit Vital 100S replacement filters: $15–20 per filter on Amazon and the Levoit website. Annual filter cost at 6-month cycles: $30–40/year. Annual filter cost at 8-month cycles: approximately $22–27/year. For the Vital 100S's price point ($60–90), the filter cost is proportionally reasonable. See our Levoit filter reset guide for the reset procedure after filter replacement.

Filter Reset After Replacement
After inserting a new filter, press and hold the Filter Reset button on the Vital 100S control panel for 3 seconds until the indicator light turns off. Alternatively, reset through the VeSync app under device settings → filter status → reset. The VeSync app reset is the simpler method if the unit is already connected to the app.

OEM vs Third-Party Filters
Levoit OEM filters for the Vital 100S are available on Amazon and levoit.com. Third-party compatible filters for the Vital 100S are available at lower price points ($10–15) — quality varies. For the HEPA layer to meet the 99.97% at 0.3 microns standard, purchase OEM Levoit filters or third-party filters that explicitly state "True HEPA" certification, not "HEPA-type."

Sources & References

Frequently Asked Questions

What is the CADR of the Levoit Vital 100S?
The Levoit Vital 100S has a CADR of approximately 100–110 (AHAM-verified), covering 183 sq ft at 4.8 ACH under AHAM standard conditions (8-foot ceilings, standard room). This positions it as an entry-level small-room purifier. For comparison, the Levoit Core 300S has CADR 141 and covers 219 sq ft. For rooms under 150 sq ft (desk use, dorm room, small bedroom), the Vital 100S provides adequate air changes per hour. For rooms 150 sq ft and larger, the Core 300S or Core 400S is better-matched.
How does the Levoit Vital 100S compare to the Core 300?
The Levoit Core 300 (non-smart version) has CADR 141 and covers 219 sq ft at 4.8 ACH — significantly more coverage than the Vital 100S's 183 sq ft. Both use True HEPA 3-stage filtration. The Core 300 costs $10–20 more than the Vital 100S and does not include the VeSync smart features (the Core 300S adds smart; the base Core 300 is manual-only). For most buyers choosing between the 100S and Core 300: if your room is over 150 sq ft, the Core 300's higher CADR makes it the better choice for the modest price difference. The Vital 100S is the right size only for genuinely small spaces under 150 sq ft.
Does the Levoit Vital 100S work with Alexa?
Yes — the Levoit Vital 100S connects to the VeSync app (iOS and Android) and supports Alexa and Google Home voice commands. You can control power on/off, fan speed adjustment, and mode switching via voice commands once the unit is linked through the VeSync app. VeSync also supports scheduling and Auto Mode management through the app. Setup requires a 2.4 GHz Wi-Fi network (the Vital 100S does not support 5 GHz networks).

How we pick: our scoring methodology uses AHAM-verified CADR data and the Beast Score system.