The catch
Coway Airmega 160
The 153-CFM smoke rating fits a smaller closed room rather than an open living floor.
Side by side
Coway Airmega 160 vs Blueair 511i Max: Coway delivers more pollen airflow, Blueair weighs less to move
Quick verdict
The Airmega 160 is the pick for more pollen airflow and no ionizer. The Blueair 511i Max weighs much less and brings useful remote schedules.
Before you buy
Why, and what it costs you
Compare room sizes at an equal turnover rate
Coway Airmega 160 calculates to about 230 square feet and Blueair 511i Max to 230, at five air changes per hour and an eight-foot ceiling.
Where this comes from
Area = CADR × 60 / (ceiling feet × air changes per hour). The inputs are 153 and 153 CFM, 8 feet and 5 changes, using smoke CADR at maximum speed. Real conditions are shaped by air mixing, furniture, open doors and filter loading.
The catch
Blueair Blue Pure 511i Max
The HEPASilent ionizer runs constantly and there is no way to disable it.
Coway Airmega 160
- Why pick it
- Mechanical-only filtration is the goal
- Pollen is your biggest particle worry
- The catch
- The 153-CFM smoke rating fits a smaller closed room rather than an open living floor.
Blueair Blue Pure 511i Max
- Why pick it
- The unit gets carried a lot
- Your routine suits app schedules
- The catch
- The HEPASilent ionizer runs constantly and there is no way to disable it.
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What this page compares
More pollen airflow and no ionizer point to the Airmega 160. The Blueair 511i Max is much lighter and adds useful remote schedules.
On smoke they are even
Which one fits
Pick the situations that sound like you
The room is big enough to call for extra airflow
At the same five-change target and eight-foot ceiling, the calculated limit is 230 square feet for Coway Airmega 160 and 230 for Blueair 511i Max. Allow margin if you plan to run below maximum speed.
- Coway Airmega 160
- Similar
- Blueair Blue Pure 511i Max
- Similar
The cabinet needs to fit next to furniture
Coway Airmega 160 needs 13.4 inches of width and 6.5 inches of depth, and Blueair 511i Max needs 9.3 by 9.3. Intake clearance is not included, so measure the gap both ways.
- Coway Airmega 160
- Depends
- Blueair Blue Pure 511i Max
- Depends
I want to run it from another room
App control comes with the Blueair 511i Max. Coway Airmega 160 relies on local controls, which fit a fixed routine but cannot satisfy a remote-control requirement.
- Coway Airmega 160
- Not suitable
- Blueair Blue Pure 511i Max
- Better fit
Ceiling height is ten feet
Modeled at ten feet and five air changes, the room areas come to 184 square feet for Coway Airmega 160 and 184 for Blueair 511i Max. That is 20% less floor area than in the eight-foot example, since the purifier has more air to move.
- Coway Airmega 160
- Depends
- Blueair Blue Pure 511i Max
- Depends
In practice
Differences you will notice
Compare room sizes at an equal turnover rate
Coway Airmega 160 calculates to about 230 square feet and Blueair 511i Max to 230, at five air changes per hour and an eight-foot ceiling.
How we worked this out
Area = CADR × 60 / (ceiling feet × air changes per hour). The inputs are 153 and 153 CFM, 8 feet and 5 changes, using smoke CADR at maximum speed. Real conditions are shaped by air mixing, furniture, open doors and filter loading.
Measure the cabinet first, then buy
Coway Airmega 160 has an 87.1-square-inch cabinet envelope, compared with 86.5 for Blueair 511i Max. A shallower shape can still need more wall width.
How we worked this out
Width × depth: 13.4 × 6.5 = 87.1 in² and 9.3 × 9.3 = 86.5 in². The cabinet bounding rectangles are what is measured, and required air clearance is left out.
Smoke CADR is equal, pollen headroom is not
Even with an exact tie at 153 smoke CFM, the Airmega 160 has about 26% more pollen CADR than the 511i Max.
How we worked this out
(220 / 174 - 1) × 100 = 26.4%. The smoke figures are 153 and 153 CFM. Ratings specific to a particle show why one winner does not fit every concern.
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.
Coway Airmega 160
Does not work with your numbers153 CFM of verified clean-air delivery works out to about 3.8 air changes per hour in this room. Hitting the 5 ACH target takes 200 CFM.
Blueair Blue Pure 511i Max
Does not work with your numbers153 CFM of verified clean-air delivery works out to about 3.8 air changes per hour in this room. Hitting the 5 ACH target takes 200 CFM.
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
Coway, AP-1019C
Airmega 160
Slim and mechanical, this purifier features a washable prefilter that opens from the front, a quiet minimum setting and simple automatic control.
- Best for
- Bedrooms and smaller rooms where you value easy prefilter cleaning and have no need for an app
Facts we checked
- Certified CADR is 153 CFM for smoke, 161 for dust and 220 for pollen.
- The AHAM room size is 214 square feet at roughly 4.8 air changes per hour.
- Coway lists a range of 19.98 to 48.3 dB and a cabinet depth of 6.5 inches.
Option B
Blueair, 511i Max
Blue Pure 511i Max
Very quiet and meant for small rooms, this purifier controls itself effectively, has a washable fabric prefilter and takes up a very small footprint.
- Best for
- Small bedrooms and offices where you'd put low noise, app control and looks ahead of maximum airflow
Facts we checked
- Blueair's listing is 237 square feet at 4.8 air changes per hour.
- Stated sound runs from 19 to 42 dB.
- A washable fabric prefilter wraps around a main filter whose stated service interval is up to nine months.
Spec by spec
Where they really differ
| Spec | Coway Airmega 160 | Blueair Blue Pure 511i Max | In practice |
|---|---|---|---|
| Smoke CADR | 153 CFM | 153 CFM | Better to rely on a smoke-specific rate than on a one-air-change marketing room size. |
| Pollen CADR | 220 CFM | 174 CFM | The model that leads on smoke does not necessarily lead on pollen as well. |
| Cabinet width and depth | 13.4 × 6.5 in | 9.3 × 9.3 in | Check both dimensions against the real gap, and keep the clearance the manual calls for around the intakes. |
| Remote app control | No app | Included | Remote schedules matter if the purifier sits far from where you spend your day. |
| Automatic sensor response | Included | Included | Apps and pollution sensors do separate jobs, and a schedule tells you nothing about air quality. |
| Ionizer or electrostatic stage | none | always-on | If a purely mechanical filter path is what you want, treat this preference as a firm requirement. |
| Published weight | 12.1 lb | 4.2 lb | A heavy cabinet bothers you less if it stays put than if it must go upstairs every day. |
| Rated power | 35 W | 17 W | Rated input is a comparison of upper limits. Actual consumption shifts with Auto mode and lower fan settings. |
Trade-offs
What each pick costs you
With Coway Airmega 160
- Apart from the controls on the unit itself, there's no app, remote history or scheduling.
With Blueair Blue Pure 511i Max
- Airflow is modest, so large bedrooms won't be covered during serious smoke events.
Decision guide
How to decide
Pick the Airmega 160 if you want more pollen airflow and no ionizer. The Blueair 511i Max is the much lighter model with useful remote schedules.
On smoke they are even
The published smoke figure is 153 CFM for both, which gives the same five-change smoke room size. A higher advertised coverage number alone shouldn't steer you toward either.
Pollen decides the tie
Pollen CFM is 220 for the Coway against 174. That gives it a specific case as the better choice for a bedroom where it stays put, even with smoke performance equal on paper.
Moving the Blueair is easier
Coway weighs 12.1 pounds and the 511i Max 4.2. If the purifier will regularly travel between an office and a bedroom, the lighter unit is the better pick, provided electrostatic-assisted filtration is acceptable.
What this page can’t tell you
- CADR is based on the maximum rated fan speed, and minimum noise and maximum airflow occur at different operating points.
- What these calculations compare is particle-cleaning capacity. Nothing in them promises health outcomes or the removal of a specific gas.
By the numbers
What the data shows
What we found across the air purifiers we compare, plus the checked facts behind each finding.
How many fit
Only 14 of the 70 models checked meet every need here: “Wildfire smoke makes its way inside”, “Floor space is very tight for me”, and “I want it to respond automatically”.
14 models fit, out of 70 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Wildfire smoke makes its way inside”, “Floor space is very tight for me”, and “I want it to respond automatically”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Coway Airmega 160 |
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| |
| Blueair Blue Pure 511i Max |
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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.
Coway Airmega 160
Mechanical-only filtration is the goal
See price & reviews on AmazonBlueair Blue Pure 511i Max
The unit gets carried a lot
See price & reviews on AmazonEach link opens in a new tab.
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