The catch
Clorox Large Room True HEPA
Auto responds to a particle reading. It does not work toward a minimum room-air-change target that you select.
Side by side
Clorox 11010 vs Levoit Core 300-P: Clorox brings particle Auto, and both need maximum speed to hit rated CADR
Quick verdict
The Clorox 11010 is the pick if you want the fan to react to PM2.5, or if your smoke-CADR target is above 143 and no higher than 206 CFM. The Core 300-P makes sense when 143 CFM is enough, you are fine with manual control and its complete kit with the original filter costs less. Both ratings assume maximum speed and clear airflow, so they do not carry over to Auto or Sleep. Levoit needs 15 inches of room on all sides, and Clorox should stay out of greasy kitchens, away from open fires and out of areas with oil or chemicals. Neither one establishes hazardous-gas protection or the rated output at a quiet setting.
Before you buy
Why, and what it costs you
A 300-square-foot study is where these ratings diverge
For a chosen five-air-change target, a closed 300-square-foot study with an 8-foot ceiling needs 200 CFM. At maximum speed, Clorox’s 206 CFM passes that calculation and Levoit’s 143 does not. You can't swap in Auto or Sleep. A target below 143 CFM suits both, and one above 206 suits neither. This is filtered-air sizing. It does not cover ventilation and is no health guarantee.
Where this comes from
The math is 300 × 8 × 5 ÷ 60 = 200 CFM. It sets manufacturer smoke CADR against a stated sizing target. It is not a measured result for the room.
The catch
Levoit Core 300-P
The base Core 300-P has no documented automatic fan change triggered by particles.
Clorox Large Room True HEPA
- Why pick it
- Your smoke-CADR target sits above 143 CFM but not above 206 CFM, and you plan to run the Clorox at maximum speed with the airflow unobstructed. Auto does not promise that output. Put it somewhere dry and level, free of greasy kitchens, open fires and oil or chemical areas. Once 143 CFM covers you, capacity no longer decides between them.
- Fan changes triggered by PM2.5 are what you are after, and you are fine with Auto output that varies instead of a guaranteed room-air-change target. The Clorox wants a dry, level spot with clear airflow, away from greasy kitchens, open fires and oil or chemicals. If you intend to leave it on one manual speed, its sensor does little for you.
- The catch
- Auto responds to a particle reading. It does not work toward a minimum room-air-change target that you select.
Levoit Core 300-P
- Why pick it
- You are fine with manual control, 143 CFM at maximum speed meets your room target and the Core 300-P, sold as a complete kit with its original filter, costs less. Give it 15 inches on all sides and keep the airflow clear. Its output on Sleep is unverified. If you need more airflow or automatic particle response, either one rules it out.
- The catch
- The base Core 300-P has no documented automatic fan change triggered by particles.
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What this page compares
Before you pick one for your room, compare their rated particle airflow, how the fan responds automatically and the placement space these two purifiers need.
Either could work in a bedroom or study if you would rather use local controls than an app. What matters is how much rated particle airflow the room needs and whether the fan should react to particles without you pressing a button. Treat those as separate decisions.
Which one fits
Pick the situations that sound like you
The target I picked works out to 200 CFM for my room
With a 200 CFM sizing target, Clorox passes the calculation only when it runs at its rated maximum speed and the airflow is unobstructed. Levoit’s 143 CFM falls short. Auto does not promise 206 CFM, and Clorox needs a dry spot with no grease, open fires, oil or chemicals.
- Clorox Large Room True HEPA
- Better fit
- Levoit Core 300-P
- Not suitable
I want the fan to react when it detects particles
Clorox sets its fan speed from the onboard PM2.5 reading, while Levoit makes you pick the speed. Be prepared for the airflow to change, and put the unit somewhere safe and clear, away from greasy kitchens, open fires and oil or chemicals. Auto is not a fixed room-air-change setting.
- Clorox Large Room True HEPA
- Better fit
- Levoit Core 300-P
- Not suitable
I'm fine with 143 CFM and like setting the speed myself
At a 143 CFM target, going by maximum-speed ratings, both are still in play. Core 300-P only saves money if its complete original-filter kit really costs less, manual control is enough for you and the 15-inch clearance on all sides is workable. Sleep is not established at that rate.
- Clorox Large Room True HEPA
- Good
- Levoit Core 300-P
- Good
I need the rated airflow at a quiet setting
Output at the quiet or automatic setting you need is not covered by either maximum-speed rating. Look for measurements taken at that exact setting. Any target above 206 CFM is beyond both as well, and neither a particle rating nor a PM2.5 display shows protection against gases.
- Clorox Large Room True HEPA
- Caution
- Levoit Core 300-P
- Caution
The only spot I have is a narrow enclosed shelf
Levoit requires 15 inches of clearance all around. Nothing here shows that Clorox is suitable inside the shelf. Keep the inlets and outlet unblocked and leave access to the underside for filter service. Pick another location before you buy.
- Clorox Large Room True HEPA
- Caution
- Levoit Core 300-P
- Not suitable
In practice
Differences you will notice
A 300-square-foot study is where these ratings diverge
For a chosen five-air-change target, a closed 300-square-foot study with an 8-foot ceiling needs 200 CFM. At maximum speed, Clorox’s 206 CFM passes that calculation and Levoit’s 143 does not. You can't swap in Auto or Sleep. A target below 143 CFM suits both, and one above 206 suits neither. This is filtered-air sizing. It does not cover ventilation and is no health guarantee.
How we worked this out
The math is 300 × 8 × 5 ÷ 60 = 200 CFM. It sets manufacturer smoke CADR against a stated sizing target. It is not a measured result for the room.
An automatic fan does not guarantee room coverage
Clorox can change its own fan speed when particles change, so you make fewer trips to the controls. But the fan may slow as the PM2.5 reading drops, so Auto does a different job from holding a fixed filtered-air target. If you would rather run a steady manual speed, the sensor adds nothing, and the lower-priced Core 300-P stays in the running as long as its maximum-speed 143 CFM rating and the placement work for you.
How we worked this out
Clorox’s manual links Auto to a particle sensor. The exact instructions for Levoit’s base model cover manual speeds and Sleep. They do not include the app and sensor features of 300S.
Even a small cylinder needs open space
Being small does not make Levoit a fit for a tight shelf, since it still needs 15 inches on every side. Open airflow and underside access for filter service are required for both. Clorox has no numerical clearance that shows it fits a narrower opening. If neither can get air or be serviced where you plan to put it, choose another spot before you buy.
How we worked this out
Follow the exact operating and filter-care instructions. The dimensions of the closed cabinet are not enough to go by.
Plug in your numbers
Can either purifier keep up with your room?
This checks hard limits only. Personal preferences are left out of the math.
Clorox Large Room True HEPA
Works with your numbers206 CFM of verified clean-air delivery works out to about 5.2 air changes per hour in this room. Hitting the 5 ACH target takes 200 CFM.
Levoit Core 300-P
Does not work with your numbers143 CFM of verified clean-air delivery works out to about 3.6 air changes per hour in this room. Hitting the 5 ACH target takes 200 CFM. Use the original filter at maximum speed. Sleep and other replacement filters are not rated here.
This uses each model’s pollutant-specific CADR at top speed and a target of five air changes per hour. Quieter settings clean less air. Raw airflow and one-change coverage claims are never swapped in.
Option A
Clorox, 11010
Large Room True HEPA
Clorox 11010 provides rated smoke-particle airflow of 206 CFM and PM2.5-based Auto control. Auto can lower fan speed, so it does not promise fixed flow. Keep airflow clear and avoid greasy or chemical-storage locations.
- Best for
- Your smoke-CADR target sits above 143 CFM but not above 206 CFM, and you plan to run the Clorox at maximum speed with the airflow unobstructed. Auto does not promise that output. Put it somewhere dry and level, free of greasy kitchens, open fires and oil or chemical areas. Once 143 CFM covers you, capacity no longer decides between them.
Facts we checked
- Smoke-particle CADR: 206 CFM rated
- Who changes fan speed: PM2.5-based Auto or four manual speeds
- Placement and filter access: Level surface, clear airflow and room to turn over for filter care
Option B
Levoit, Core 300
Core 300-P
Core 300-P provides rated smoke-particle airflow of 143 CFM with manual speeds. Despite its smaller body, it needs 15 inches of clearance on all sides. Its original-filter rating does not establish flow in Sleep mode.
- Best for
- You are fine with manual control, 143 CFM at maximum speed meets your room target and the Core 300-P, sold as a complete kit with its original filter, costs less. Give it 15 inches on all sides and keep the airflow clear. Its output on Sleep is unverified. If you need more airflow or automatic particle response, either one rules it out.
Facts we checked
- Smoke-particle CADR: 143 CFM rated
- Who changes fan speed: Three manual speeds and Sleep
- Placement and filter access: 15-inch all-side clearance, clear airflow and underside filter access
Spec by spec
Where they really differ
| Spec | Clorox Large Room True HEPA | Levoit Core 300-P | In practice |
|---|---|---|---|
| Smoke-particle CADR | 206 CFM rated | 143 CFM rated | Compare ratings for the same pollutant. The numbers don't carry over to Sleep or to a speed that Auto has lowered. |
| Who changes fan speed | PM2.5-based Auto or four manual speeds | Three manual speeds and Sleep | Clorox responds to a particle reading, but with Levoit you set the speed. Auto does not hold a chosen room-air-change target. |
| Placement and filter access | Level surface, clear airflow and room to turn over for filter care | 15-inch all-side clearance, clear airflow and underside filter access | Levoit's 8.7-inch body needs operating space too. Cabinet width alone should not decide between them. |
Trade-offs
What each pick costs you
With Clorox Large Room True HEPA
- The manual rules out greasy kitchens and areas with oils or chemicals.
With Levoit Core 300-P
- When choosing a spot, the 15-inch clearance on all sides counts for more than the small cabinet.
Change of plan
When the answer changes
The airflow you need is above 143 CFM and no higher than 206 CFM
Go with Clorox Large Room True HEPA. You only get the extra capacity at maximum speed, with unobstructed airflow, in a dry, level spot away from grease, open fires and oil or chemicals. Clorox Auto cannot guarantee the 206 CFM maximum.
Fan changes that follow particles matter more than steady airflow
Go with Clorox Large Room True HEPA. With its PM2.5-triggered Auto you make fewer manual adjustments, as long as you can live with variable airflow and the placement is dry and clear, away from grease, open fires and oil or chemicals. It does not control a fixed room-air-change rate.
143 CFM covers the need and cheaper manual control is enough
Go with Levoit Core 300-P. You save only if the complete original-filter kit is the lower-priced one, you are content with manual control and maximum-speed operation, and you can give it 15 inches of clear space on every side. Sleep does not inherit the 143 CFM rating.
No airflow evidence supports the setting you need
Neither model fits. If you need a target above 206 CFM, proven output at a quiet setting or hazardous-gas protection, shop elsewhere. A particle CADR and an onboard reading don't settle any of those.
Decision guide
Before you buy
Start from the airflow your room needs, and only then ask whether a fan that reacts to particles is worth having. Auto is not a guaranteed flow setting.
What this page can’t tell you
- Noise, purification speed and sensor accuracy were not tested hands-on.
- Rated airflow has not been verified at quiet settings or in modes that change fan speed automatically. No gas removal or medical outcome is promised.
- Manufacturer marketing for large areas and its rounded room-size labels rest on different turnover assumptions. The worked room calculation avoids them and uses an explicit volume.
By the numbers
What the data shows
What we found across the air purifiers we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Clorox Large Room True HEPA |
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| Levoit Core 300-P |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Clorox Large Room True HEPA
Your smoke-CADR target sits above 143 CFM but not above 206 CFM, and you plan to run the Clorox at maximum speed with the airflow unobstructed. Auto does not promise that output. Put it somewhere dry and level, free of greasy kitchens, open fires and oil or chemical areas. Once 143 CFM covers you, capacity no longer decides between them.
Fan changes triggered by PM2.5 are what you are after, and you are fine with Auto output that varies instead of a guaranteed room-air-change target. The Clorox wants a dry, level spot with clear airflow, away from greasy kitchens, open fires and oil or chemicals. If you intend to leave it on one manual speed, its sensor does little for you.
See price & reviews on AmazonLevoit Core 300-P
You are fine with manual control, 143 CFM at maximum speed meets your room target and the Core 300-P, sold as a complete kit with its original filter, costs less. Give it 15 inches on all sides and keep the airflow clear. Its output on Sleep is unverified. If you need more airflow or automatic particle response, either one rules it out.
See price & reviews on AmazonEach link opens in a new tab.
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