Levoit · Budget bedroom
Levoit Core 300
A compact, simple HEPA purifier for a bedroom or study, with a carbon layer for smells and a sleep mode quiet enough to leave on overnight.
- HEPA filter with a carbon layer
- Buttons only: nothing to set up
$89.99at levoit.com · sale price, was $99.99 · Nov 2026
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- smoke CADR: clean air it moves each minute
- 143 cfm
- room size it suits, every day
- 21 m²
- 222 ft²
- room size on smoggy days
- 13 m²
- 143 ft²
Levoit Core 300 at a glance
- Smoke CADR
- 143 cfm (AHAM)
- Filter
- Pre-filter, HEPA and activated carbon in one cylinder
- Replacement filter
- Core 300-RF (Levoit suggests every 6–8 months)
- Controls
- Buttons only: no app and no air-quality sensor
- Sold as
- Core300-P, the current version of the Core 300
Which rooms it suits
Everyday: AHAM's room size. Smog: AHAM's advice for smoke, a CADR at least equal to the floor area in ft².
| Room | Everyday | Smog days |
|---|---|---|
| Bedroom · 15 m² (161 ft²) | ||
| Living room · 30 m² (323 ft²) | ||
| Large room · 50 m² (538 ft²) |
Our take
The Core 300 does one job and does it simply: a cylinder of pre-filter, HEPA and carbon, a fan, and a handful of buttons. Its smoke CADR of 143 cfm suits a room of about 21 m², which covers most bedrooms and studies.
What it lacks is a sensor. It won't speed up when the air gets worse, so on a smoggy day you set it to high yourself. If you'd rather it reacted on its own, the Core 300S adds a sensor, auto mode and Wi-Fi around the same filter.
What's good
- Low price and low filter cost
- 143 cfm, verified by AHAM, for about 21 m²
- Same filter as the Core 300S, changed every 6–8 months
What's not
- No sensor or auto mode
- No app or schedules
- Too small for a living room
Its filter: Levoit Core 300 & 300S Replacement Filter · $29.99 at levoit.com
Good for
- Bedrooms, studies and nurseries up to about 21 m²
- A first purifier, or a second one for the room you sleep in
Skip it if
- You want it to react to the air by itself: it has no sensor
- The room is larger than about 21 m²
How it compares
Every air purifier in the shop.
| Product | Best for | Smoke CADR | Room size | Price |
|---|---|---|---|---|
| Levoit Core 300S | Smart bedroom | 141 cfm | 20 m² | $149.99 |
| Levoit Core 300 (this one) | Budget bedroom | 143 cfm | 21 m² | $89.99 |
| Levoit Vital 100S | Pet-friendly bedroom | 143 cfm | 21 m² | $119.99 |
| Coway Airmega 150 | Small & quiet | 153 cfm | 22 m² | $189.99 |
| Levoit Core 400S | Shows PM2.5 | 231 cfm | 33 m² | $189.99 |
| Winix C545 | Everyday pick | 232 cfm | 33 m² | $209.99 |
| Coway Airmega AP-1512HH Mighty | Best overall | 233 cfm | 34 m² | $239.99 |
| Coway Airmega AP-1512HHS (Mighty with Wi-Fi) | Smart Mighty | 233 cfm | 34 m² | $299.99 |
| Coway Airmega 200M | Mighty's twin | 233 cfm | 34 m² | $229.99 |
| Levoit Vital 200S | Pet homes | 250 cfm | 36 m² | $169.99 |
| Honeywell HPA300 | No-frills power | 300 cfm | 43 m² | $269.95 |
| Coway Airmega 400 | Big rooms | 376 cfm | 54 m² | $649.00 |
| Levoit Core 600S | Large rooms | 391 cfm | 56 m² | $299.99 |
| Blueair Blue Pure 211i Max | Most clean air | 435 cfm | 63 m² | $349.99 |
| Filtrete MPR 1900 MERV 13 filters for a DIY box-fan purifier (4-pack) | Budget build | — | — | $87.99 |
Its filter, and related models
Levoit Core 300-RF Original FilterCore 300 & 300S · $29.99
Levoit Core 300SSmart bedroom · $149.99
In our buying guides
Head to head
Questions about the Core 300
- What size room does the Levoit Core 300 cover?
- About 222 ft² (21 m²). That's AHAM's room size for its smoke CADR of 143 cfm: the floor area, with an 8 ft ceiling, whose air it cleans about every 12.5 minutes.
- Is the Levoit Core 300 enough for smog?
- For smoke and heavy smog AHAM suggests a smoke CADR at least equal to the floor area in square feet. By that measure the Levoit Core 300 keeps up with a room of about 143 ft² (13 m²). Keep the windows shut and run it on high while the AQI is bad.
- Core 300 or Core 300S?
- Same size and same filter. The 300S adds an air-quality sensor, auto mode and Wi-Fi control. If you don't want to touch the buttons when the air changes, the 300S is worth it.
- How often should I replace the Core 300 filter?
- Levoit suggests every 6 to 8 months. In a smoggy winter check it sooner: a grey, clogged filter moves less air.
How we judge. We haven't tested the Core 300 in a lab of our own. The figures come from independent ratings (AHAM, Energy Star, NIOSH, the ASPCA) or the maker, and the verdict is ours, from those figures. No brand pays to be listed. Last checked Nov 7, 2026.
Levoit Core 300
$89.99 list price