Airmega 300S Review

Love everything about Airmega 300 purifying features yet wish it had Wi-Fi connectivity support, Airmega 300S is your answer. With almost identical features between them,  majority user that used Airmega previously would appreciate the familiarity this air purifier bring. In comparison with the airflow output, applicable area, noise level and power usage, does Airmega 300S additional Wi-Fi connectivity justify the premium price tag ? Let's go through the air purifier spec and learn more from our detail review below.
± 749 p
     Annual filter ^    
± 100 p
Online price*
Latest Amazon price

Airmega 300S Specification

ProductAirmega 300S
13.6 x 21.2 x 13.6 in
(34.5 x 53.8 x 34.5 cm)
Weight21.4 lb (9.7 kg)
Coverage (up to)1256 sq. ft. (117 m2)
Dust free (CADR)260 cfm (442 m3/h)
Pollen free (CADR)260 cfm (442 m3/h)
Smoke free (CADR)260 cfm (442 m3/h)
Airflow speed
A Annual filter cost ($)+- 100
- Lifespan
- Replacement cost ($)
Pre-filter (2 pack)
+- 25
HEPA filter
- Lifespan
- Replacement cost ($)
Max2 (Green True HEPA filter)
1 year
Carbon filter
- Lifespan
- Replacement cost ($)
Max2 (Activated carbon filter)
1 year
Ionizer/ Technologies
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Max2 Filter
1 year
+- 99.99
Optional/ Addon
Noise level22 - 52 dB
Power consumption6 - 57 W
Timer/ Scheduler1, 2, 4, 8 hours (App), Scheduler
SensorsPollution sensor
More color options
Auto mode
Air qualityAQ indicator
Filter change indicator
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty5 years
Email/ Phone support

Product image

Airmega 300S key features

  • 4-stage filtration
  • Equipped with Wi-Fi support (IoCare app/ Amazon Alexa)
  • Permanent Pre-filter
  • MAX2 filter (True HEPA filter/ Activated Carbon filter)
  • 4 fanspeed (Sleep, Low, Medium, High)
  • Dual side air inlet
  • Dual Pre-filter and HEPA filter indicator
  • Smart mode (Auto, ECO and Sleep mode)
  • Real-time ir quality indicator (Good, Moderate, Unhealthy, Very Unhealthy)
  • Scheduler/ Timer via app (1, 2, 4, 8 hours)
  • 5 years warranty

The starters

Airmega 300S dimension
13.6 x 21.2 x 13.6 in
(34.5 x 53.8 x 34.5 cm)
Airmega 300S weight
21.4 lb (9.7 kg)

A modern and quality product from Airmega, 300S its basically 300 with added Wi-Fi integration with airmega app and Amazon Alexa. Sharing the same dimension as 300 with 13.6 x 21.2 x 13.6 in/ 21.4 lb weight, Airmega 300S build quality is second to none with no visible gap at all. Front design is as clean as it gets with only prominent ring indicator that shows surround room air quality. Instead just back air inlet in some model, Airmega 300S utilize dual air inlet that works wonder with 2 Pre-filter on each side. Controls is located at top with added Wi-Fi indicator along with fanspeed, Smart mode and dual filter change indicator (Pre-filter/ Max2). Other common features available in both 300/ 300S including 4 stage filtration, Smart mode (Auto/ Sleep/ Eco), 4 fan speed, separate pre-filter/ HEPA filter indicator based on runtime, 30 days satisfaction money back guaranteed and 5 years manufacture warranty.

Here is where the differences plays it part. Airmega 300S comes with Wi-Fi support which allows you to manage your air purifier via Airmega mobile IoCare App. Available in both iTunes and Google Play, pairing Airmega 300S is pretty straightforward for both iPhone and Android phones (higher end model) once you are used to standard procedure. Through Airmega’s IoCare app, you can remotely control your air purifier fanspeed, switch to Smart/ Sleep mode, real-time air monitoring plus Indoor/ Outdoor Air Quality Report and scheduler/ timer. While timer comes with pre-set 1, 2, 4, 8 hours setting, scheduler is no doubt our favorite where you could program up to weekly schedule to turn on or off the air purifier. Airmega 300S also works with Amazon Alexa where you could link it via devices like Amazon Echo. Standard list of voice command include activating/ deactivating the air purifier, switching to Smart/ Sleep mode, altering the fan speed, set timer, check filter life status and air quality.

Airflow, CADR and everything in between

Airmega 300S coverage
Purifying coverage
1256 sq. ft. (117 m2)
Airmega 300S fanspeed
Comes in standard 4 fanspeed, Airmega 300S has a toned down airflow performance and purifying coverage, at 1256 sq. ft. with 2 air charges every 30 minutes and 628 sq. ft. with 4 air charges every 15 minutes. There is plenty of punch even if you opt for the higher 4 air charges purifying. Great for residential user at living hall, basement or even bedroom.
Airmega 300S dust CADR
260 cfm (442 m3/h)
Airmega 300S pollen CADR
Pollen CADR
260 cfm (442 m3/h)
Airmega 300S smoke CADR
Smoke CADR
260 cfm (442 m3/h)
Airmega 300S CADR is also equally impressive at an overall high 260 cfm for all three dust, pollen and smoke. There is no differences in terms of airflow performance for 300/ 300S and marginal difference between the 400 series. Compare yourself via the specification table above.

What’s inside count

Airmega 300S Pre-filter
Pre-filter (2 pack)
Airmega 300S HEPA filter
Max2 (Green True HEPA filter)
1 year
Airmega 300S carbon filter
Max2 (Activated carbon filter)
1 year
^ Airmega 300S filters/ technologies/ lifespan
^ Airmega 300S filters/ lifespan/ price
The familiar 4-stage filtration setup, Airmega 300S works exactly like Airmega 300 with dual Pre-filter on both side with Green True HEPA filter and Activated Carbon filter in its core. Every time when Airmega 300S pulls air into the machine, the first-stage pre-filter on each side would block out large contaminants like hair leaving only small particles alone in the journey. With only micron size allergens left, the Green True HEPA filter would unconditionally traps all germs, bacteria and viruses at an effective rate of 99.97%. For smoke, odor and gases, the Activated Carbon filter would come into play with an efficiency rate of 99% before releasing purified air back out. Sadly there is no ionizer or similar technology available in any of the Airmega models.

Airmega 300S is covered against

Airmega 300S VS Dust



Airmega 300S VS Pollen



Airmega 300S VS Hair

Hair/ Pet hair


Airmega 300S VS Dust mite

Dust mites


Airmega 300S VS Mold/ Mildew

Mold/ Mildew


Airmega 300S VS Pet dander

Pet dander


Airmega 300S VS Virus/ Germ

Virus/ Germ


Airmega 300S VS Tobacco smoke

Tobacco smoke


Airmega 300S VS Chemical



Airmega 300S VS VOCs



Airmega 300S VS Smoke/ Gas

Smoke/ Gas


Airmega 300S VS Odor



In general Airmega 300S 4-stage filtration is vastly efficient when pit against large-scale and small scale contaminants, allergens, bacteria and viruses. Driven by immense airflow circulation and wide purifying coverage, Airmega 300S included filtration is spectacular in eradicating dust, hair, pet hair, dust mites, pollen, mold, spores, mildew, fungi, germs and pet dander.  On dealing smokes and odors, Airmega 300S is also spectacular against chemicals, cooking odors, detegent odors, VOCs, tobacco smokes, cigarette, radon and ammonia.

Keep it down

Airmega 300S noise level
Noise level
22 - 52 dB
Airmega 300S power consumption
Power consumption
6 - 57 W
Airmega 300S 22 - 52 dB noise level might not be the most silent air purifier around, it is still considerably silent especially at sleep/ low speed and only audible background noise at higher speed. Power consumption wise 6 - 57 W its not too shabby given the number of airflow output, expect slightly lower consumption rate if the air purifier is constantly operated in Auto/ Sleep mode where the fanspeed will only go higher is the air quality is not at ideal level. Also there is Eco mode where Airmega 300S will automatically stop the fan from spinning if the surrounding air quality is good for at least 10 minutes.

At what cost

Airmega 300S MRSP/ RSP
+- 749
Airmega 300S annual filter replacement cost
Annual Filter Cost
+- 100
^ Airmega 300S replacement filters estimated cost
Airmega air purifier is not your typical budget-friendly model, furthermore Airmega 300S is the premium version to 300S so naturally the price tag would be even higher. Is the Wi-Fi feature worth the extra dollar for an identical specification to Airmega 300? You only can decide. What we do like its the remote access and scheduler that is only available via the app along with its high-performance output. On another spectrum, the mandatory filter replacement cost is not the most expensive in its class as you only need to replace one Max2 filter on a yearly basis. FYI Max2 filter is bundled with Green True HEPA filter and Activated Carbon filter.

The challengers

Airmega 300

Airmega 300

Drop the Wi-Fi connectivity and price will drop even further down.
Airmega 400S

Airmega 400S

Highest range in Airmega series that also comes with Wi-Fi support. Highest price is undoubtedly the biggest obstacle.

In conclusion......

  • 4-stage filtration with wide purifying applicable area.
  • Utilize 2 Pre-filter on each side of the air purifier that traps dust, pet hair while enhancing HEPA filter and Carbon filter lifespan.
  • Highly-efficient allergen and odor filtration with the combined Green True HEPA and Activated Carbon Max2 filter.
  • Convenience and practical Smart mode (Auto mode/ Sleep mode).
  • Separate Pre-filter and MAX2 filter lifespan indicator.
  • Remotely control when the air purifier on/ off via scheduler and timer.
  • Real-time air quality display monitor.
  • Reasonable Max2 filter replacement cost that only requires one yearly change.
  • 5 years warranty.
  • Even more expensive based price than the non-Wi-Fi 300 version.
  • App is slightly less refined compare with competitors app.
  • Learning curve on setting up Wi-Fi connectivity for first time user.
  • No built-in timer. Only accessible via Airmega app.
  • Lacks autonomous sleep mode and real-time HEPA and Activated Carbon filter change indicator available in 400/ 400S models.
  • No Ionizer within its filtration list.
Build quality
Airflow delivery
Particle Filtration
Smoke Filtration

Frequently Asked Questions FAQ

Airmega 300S Troubleshooting

Safety Tips

More on Airmega 300S

Estimable Airmega look and build quality that owner enjoyed about, Airmega 300S reliability and durability set it self ahead of its competitors. To start off with the air purifier design, you have the seamless air vent flow together with smooth, rounded corners that maximize Airmega 300S premium look. Simultaneously, control panel are affixed in standard top placement with the additional of Wi-Fi indicator. Airmega 300S is perfectly fitted that you could expect only minimal gaps on its body configuration.

Airmega 300S airflow effectiveness and purifying coverage

Airmega 300S has identical performance output as Airmega 300 air purifier. The wide purifying coverage is immaculate for huge room size thanks to the dual side air flow intake. In most cases, Airmega 300S purifying coverage is appropriate for use in office, bedroom or living hall. Continuing with the purifying efficiency, Airmega 300S 4 airflow fan speed adjustment would destroy air particles rapidly and efficiently. One example to illustrate the air purifier dynamic purifying is nearby air particles such as dust, pollen, mold and pet dander would all be swiftly absorbed and captured with 4 air charges per hour.

Maintenance and care

Airmega 300S requires routine upkeeping to ensure there is no clog in the air-ventilation, the seamless and leveled front body structure is the core reason why Airmega 300S could be effortlessly maintain from dust with a cloth. User that utilize the air purifier constantly to purify indoor air would appreciate the easy upkeeping and cleaning.

Noise level and power consumption

Primarily built to produced ultra-powerful air flow with minimal noise, Airmega 300S noise is well confined that would be most ideal for bedroom as it would not interfere with the user's sleep. Nearly silent at minimum fanspeed while noise level is still decent at maximum fan speed. Compare with other comparable household appliances, you would have no issue with Airmega 300S developed noise level. Secondly, Airmega 300S all-round purifying would save you a substantial amount on electricity bills when working on Auto/ Sleep mode. Power usage is not the best although given the air circulation performance its totally understandable. Compare with household appliances, Airmega 300S day to day power usage is within a justifiable rate.
noise graph

Final thoughts on Airmega 300S

To conclude, Airmega 300S is a great, reliable air purifier as with Airmega 300. Compare with the whole list of advantages/disadvantages, you would reap more on the benefits without compromising much on the shortcomings. As we disclosed above, we have no reservations strongly recommending Airmega 300S.

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