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PuroAir 240 vs Levoit 300 comes down to one question: do you want a purifier built around measured airflow/CADR transparency (Levoit) or a purifier marketed around higher-grade HEPA claims and sensors (PuroAir)?
Verdict:
- Most people should buy the Levoit Core 300 (what “Levoit 300” usually refers to). It publishes a clear CADR and realistic room-size guidance, and it’s a proven pick for bedrooms and everyday allergy control.
- Choose the PuroAir 240 if you specifically want its sensor-focused approach and you’re comfortable with coverage claims that aren’t paired with a published CADR on the product page.
Why this matters: air purifiers are simple machines. If the airflow + filter combo isn’t right for your room, you’ll just be running a fan-shaped decoration.
PuroAir 240 vs Levoit 300 Comparison Table
 |  | |
|---|---|---|
Best for | Feature-forward shoppers, sensor emphasis | Most bedrooms + everyday allergies |
Headline strength | Coverage and sensor claims | Clear CADR + ACH guidance |
CADR (published) | Not clearly shown on main product page | 143 CFM |
Room sizing guidance | “Up to 1,000 sq ft” style claim | 222 sq ft at ~4.8 ACH (and larger at lower ACH) |
Noise (stated) | 22–48 dB | 24–54.5 dB |
Filter type | HEPA + activated carbon (listed) | 3-stage filtration; CADR listed |
Size | ~8.7″ x 8.7″ x 14.2″ | 8.7″ x 8.7″ x 14.2″ |
Weight | ~7.3 lb | ~7.9 lb |
Price |  | |
Quick Snapshot
Levoit Core 300 (Levoit 300)
- Best for: Bedrooms, nurseries, offices
- Biggest win: Clear CADR + realistic ACH guidance
- Biggest trade-off: No built-in smart features unless you buy the 300S variant (different model)
PuroAir 240
- Best for: Shoppers who want sensors highlighted and prefer PuroAir’s feature set
- Biggest win: Quiet-on-low claims + HEPA marketing emphasis
- Biggest trade-off: Coverage claims are prominent, but CADR transparency is harder to find on the main listing
(If you meant the Levoit 300S smart model, tell me and I’ll swap it in—specs differ.)
What Actually Matters (So You Don’t Overbuy or Underbuy)
CADR beats “Up to X sq ft”
“Up to 1,000 sq ft” can mean one air change per hour in ideal conditions. That’s not the same as cleaning a bedroom quickly when pollen is spiking.
Levoit publishes CADR (143 CFM) and even spells out room sizing by air changes per hour (ACH).
PuroAir emphasizes coverage and sensors, but its main listing focuses more on “up to” coverage than CADR.
Noise is about what you’ll tolerate at higher speeds
Almost every purifier is quiet on low. The difference is whether you can stand it when you need power (cooking smells, wildfire haze, heavy pet dander weeks).
PuroAir lists 22 dB low / 48 dB high (their stated testing).
Levoit lists 24–54.5 dB (official specs).
Filters: both are “HEPA + carbon,” but sourcing matters
Both are positioned as HEPA filtration paired with activated carbon for odors/VOCs.
What you’ll feel day-to-day is less about the label and more about how often you replace filters and how much gunk your room generates.
| | |
|---|---|---|
Best for | Feature-forward shoppers, sensor emphasis | Most bedrooms + everyday allergies |
Headline strength | Coverage and sensor claims | Clear CADR + ACH guidance |
CADR (published) | Not clearly shown on main product page | 143 CFM |
Room sizing guidance | “Up to 1,000 sq ft” style claim | 222 sq ft at ~4.8 ACH (and larger at lower ACH) |
Noise (stated) | 22–48 dB | 24–54.5 dB |
Filter type | HEPA + activated carbon (listed) | 3-stage filtration; CADR listed |
Size | ~8.7″ x 8.7″ x 14.2″ | 8.7″ x 8.7″ x 14.2″ |
Weight | ~7.3 lb | ~7.9 lb |
Price | | |
Real-World Use Cases (Where One Clearly Wins)
If you want “set it in a bedroom and forget it”
Levoit Core 300 is the easy answer. The CADR and ACH guidance are straightforward, so you can size it without guesswork.
Example: a 10′ x 12′ bedroom (120 sq ft) is right in the wheelhouse for fast cleaning on medium/high when you need it.
If you’re shopping based on coverage claims and sensors
PuroAir 240 is built and marketed around that story (PM detection + VOC mention + “up to” coverage framing).
Just be honest with yourself: if you’re buying for a large space, you want published airflow metrics so you’re not relying on best-case numbers.
If odors are the main problem (cooking, litter box, musty room)
Both include activated carbon in the filter description.
In real life, odor control is often about fan speed + frequent filter changes, not magic carbon.
Pros & Cons (No Fluff)
PuroAir 240: Pros
- Quiet-on-low numbers look strong (great for sleepers)
- Emphasizes particle detection + VOC mention (nice if you want “feedback”)
- Compact footprint, easy placement
PuroAir 240: Cons
- Coverage claims are prominent, but CADR transparency is limited on the main listing
- Some independent reviewers argue the value doesn’t match performance for the price
Levoit Core 300: Pros
- Published CADR 143 CFM (huge for buyer confidence)
- Clear room-size guidance by air changes (practical, not vague)
- Known “bedroom workhorse” form factor (small, simple, effective)
Levoit Core 300: Cons
- No smart/app control on the Core 300 (that’s the 300S model)
- Max noise is higher on paper than PuroAir’s stated high setting
FAQs – Levoit 300 vs PuroAir 240
Is the Levoit 300 a true HEPA air purifier?
The Core 300 line uses HEPA-style filtration with a 3-stage system and publishes CADR for performance expectations.
Which is better for allergies: PuroAir 240 or Levoit 300?
For most bedrooms, Levoit Core 300 wins because it publishes CADR and room sizing by ACH, so you can confidently match it to your space.
Does PuroAir 240 really cover 1,000 sq ft?
It’s listed as “up to 1,000 sq ft,” which often reflects lower air-change targets and ideal conditions. Use that number carefully if you want fast cleaning.
Which one is quieter for sleeping?
Both are designed for quiet operation on low. PuroAir lists 22 dB on low; Levoit lists a 24 dB low end for the Core 300.
Should I buy one bigger purifier or two smaller ones?
If you have multiple closed rooms, two smaller units often work better than one “big coverage” claim running from the hallway.
Final Take
If you want the safest, easiest buy with the least guesswork, get the Levoit Core 300. The published CADR and ACH sizing are exactly what most shoppers need.
If you prefer PuroAir’s sensor-forward pitch and you’re comfortable leaning on “up to” coverage claims, the PuroAir 240 can still make sense—especially for smaller rooms where any decent HEPA + airflow combo performs well.
PuroAir 240 vs Levoit 300: Levoit is the better all-around value and the easier one to size correctly.
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About the Author
Written by HappyHomeNerd — your trusted guide for smart home reviews, troubleshooting, and everyday tech fixes. Visit HappyHomeNerd for more expert tips and product breakdowns.