Winix A231 Tower Air Purifier Review In 2022: Cheap And Good!

Quality air comes cheap. Winix A231 Tower True HEPA Air Purifier is the perfect addition to your home without the exuberant cost. Featuring a 4-Stage PlasmaWave purification that guarantees an exceptional air cleaning performance, what else can you expect from this compact device? Does the affordable price tag compromise on the air filtration and features? How does it stack up against other same segment competitor models? Find out in our full Winix A231 air purifier review below.
online price (US)**
±99.99 $$/ 7

(annual filter cost ±50)

** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Winix A231 Specification

ProductWinix A231
9.5 x 14.6 x 9.5 in
(24.1 x 37.1 x 24.1 cm)
Weight11.5 lb (5.2 kg)
Coverage (up to)230 sq. ft. (21 m2)
Airflow speed
Dust free (CADR)149 cfm (253 m3/h)
Pollen free (CADR)154 cfm (262 m3/h)
Smoke free (CADR)147 cfm (250 m3/h)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
Fine Mesh Pre-Filter
1 year
HEPA filter
- Lifespan
- Replacement cost ($)
True HEPA filter
1 year
Carbon filter
- Lifespan
- Replacement cost ($)
Activated Carbon Filter
1 year
Ionizer/ TechnologiesPlasmaWave Technology
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Filter O 1712-0110-00
1 year
+- 49.99
Optional/ Addon
Noise level25 dB
Power usage level
Timer/ SchedulerNo
SensorsSingle Smart Sensor
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty2 years
Email/ Phone support

Key Features

  • All-in-one 4-stage filtration with PlasmaWave Technology
  • Fine Mesh Pre-Filter
  • True HEPA filter - 99.97%/ 0.003 microns
  • Activated Carbon Filter
  • 4 fan speeds
  • Auto mode/ Manual Sleep mode
  • Air quality indicator - Blue (good), Amber (fair), Red (poor)
  • Single Smart Sensor
  • 2 years warranty

Design And Usability

Winix A231 dimension
9.5 x 14.6 x 9.5 in
(24.1 x 37.1 x 24.1 cm)
Winix A231 weight
11.5 lb (5.2 kg)

The compact size air purifier that is finally landed on the Winix lineup. Winix A231 is a conical-shaped air purifier that looks great at all angles. Stands at 9.5 inches in diameter and 14.6 inches in height, there is no short of places to put Winix A231. Most people will leave Winix A231 on the kitchen tabletop, desktop, bedside, or TV cabinet because of its tiny form compact. Portability is great too where you can carry it to any room that needs air cleaning. Comes in a dual black and white color tone, we are happy with the modern and daring approach but you can also opt for the black version (Winix A230).

Usability wise, Winix A231 house a 360° air ventilation that draws airborne contaminants at every corner of the room. The panel can be effortlessly removed for a quick all-in-one filter change. Moving top, The easy-to-use control panels are well lit where you can cycle between the four fan speeds and enable Auto mode. Auto mode will use a higher fan speed when a large concentration of airborne pollutants is detected. Otherwise, it will remain at low speed. Sleep mode disables PlasmaWave, indicator light, and sets the fan speed to the lowest (lower than low) but it has to be initiated manually. You can also disable PlasmaWave manually by holding the buttons for more than 3 seconds. The air quality indicator will display Blue when air quality is good, Amber when it is fair, and Red when air quality is poor. A basic filter change indicator illuminates red to remind you to replace the filter when it is worn out.

On the whole, Winix AM231 is a reliable air purifier despite being relatively new to the market. It is AHAM Verifide, Energy Star certified, CARB approved (ozone-safe), and UL nationally recognized. It is also backed by an official 2 years warranty that protects the consumer from any manufacturer defects or faulty parts.

Airflow, Coverage, And CADR

Winix A231 coverage
Purifying coverage
230 sq. ft. (21 m2)
Winix A231 fanspeed

Winix A231 air purifier does not let you down in the airflow performance despite its budget price point. It is AHAM Verifide to cover 230 square footage of room space at 5 air changes per hour. Ideal for an asthmatic, hypersensitive, or sick person. For those with a healthier state of body, you can reduce the air changes to 4 or every 15 minutes for an increase of 278 square footage of air cleaning space. For those that don't mind the slower air cleaning rate, drop it to 2 air changes per hour or every 30 minutes for a whopping 555 square footage. Winix A231 is suitable for medium room sizes like bedroom, small living room, kitchen, studio apartment, and cubicle desk use.

BrandPurifying CoverageFan Speed
Medify Air MA-14200 sq. ft.3
Medify Air MA-25500 sq. ft.3
Winix A230230 sq. ft.4
Coway Airmega 250930 sq. ft.3
Medify Air MA-15330 sq. ft.3
GermGuardian AC9200WCA378 sq. ft.3
Winix A231 dust CADR
149 cfm (253 m3/h)
Winix A231 pollen CADR
Pollen CADR
154 cfm (262 m3/h)
Winix A231 smoke CADR
Smoke CADR
147 cfm (250 m3/h)
Given its compact form factor, the clean air delivery rate is also slightly lower but not overly so. Expect slower outputs of 149 cfm for dust, 154 cfm for pollen, and 147 cfm for smoke. Winix A231 air purifier will still keep indoor air clean for you and your family but you'll have to be a little bit patient with it.

Recommended Read

Filters And Performance

Winix A231 4-Stage HEPA Air Purifier with PlasmaWave Technology says it all. Drawing air pollutants at a 360° angle, the outer fine mesh pre-filter traps large particles like dust, hair, fiber, and lint from passing through. The activated carbon filter absorbs smoke, and odors coming from cooking, pets, food, chemical fumes e.g. cigarettes, VOCs, radon, asbestos, formaldehyde. It will also prolong the HEPA filter life from being damaged by smoke particles. The True HEPA filter capture 99.97% of airborne allergens including mold, pollen, and pet dander as small as 0.3 microns. PlasmaWave Technology electrically discharges dual polarity ions Hydroxyls to neutralize bacteria and viruses including influenza strain H3N2. It is very safe and natural where only hydrogen from the air pollutants' molecular structure is removed. You do not have to worry about ozone and other chemical byproducts.

Noise And Energy Usage

With a smaller body framework, Winix A231 air purifier runs silently even without the autonomous sleep mode. Expect a whispering noise of just under 25 dB when running at the lowest speed. You can work. sleep, or play without having to deal with any noise distraction. Winix A231 air purifier is Energy Star certified so naturally, the power output is very efficient. Running in a 12 hours operation (auto mode), the electric cost is about $0.04 per day, $1.2 a month, or 14 dollars a year. For the recommended 24 hours operation, multiply the running cost by 2 and you will get the estimated electric cost (vary state by state).
Noise TypeDecibels
Winix A23125 dB
Breathing10 dB
Rustling leaves20 dB
Whispering/ Quiet library30 dB
Light rainfall40-50 dB
Conversation50-60 dB
Vacuum cleaner/ Hair dryer/ Washing machine65-80 dB
City traffic80-90 dB

Pricing And Maintainence Cost

Winix A231 MRSP/ RSP
+- 99.99
Winix A231 annual filter replacement cost
Annual Filter Cost
+- 50
^ Replacement filters/ estimated cost
Officially, a brand new Winix A231 HEPA air purifier is retailing around 99.99 to $119.99 dollars but you can easily get it around 70 dollars. It is the cheapest Winix air purifier to date yet it holds the same renowned 4-stage PlasmaWave HEPA air purification. The all-in-one filter replacement set is affordable at around 50 dollars and only has to be replaced once a year. Some cutting cost measures like the omission of Smart features, light sensor, timer, and remote is inevitable, you will not find any other models that deliver the outstanding filtration at its price point.
Without a shadow of a doubt, the best place to get Winix AM231 air purifier is on Amazon as it comes with a huge discount, bundled/ addon deals, free shipping, and convenience, no question asked 30 days return policy. Winix's official website is another good alternative with similar perks but at a higher selling price. You do get direct manufacturer shipping, Winix customer service, and filter subscription reminders. Local retailers like Walmart, Target is not a go-to option unless you purchase it via their online store.


  • Affordable 4-stage PlasmaWave HEPA air cleaner for just under 100 dollars.
  • Low filter maintenance cost (under 50 dollars annually).
  • Compact body with a beautiful 360° air intake.
  • Proven True HEPA filter with 99.97% particles removal efficiency.
  • Remove household smoke and odors via a dedicated activated carbon filter.
  • Built-in air quality sensors for real-time auto fan speed adjustment and air quality monitor.
  • Made entirely in Korea with 2 years warranty.


  • No timer, no smart features.
  • Weaker airflow performance.
  • Manual sleep mode (does not activate automatically when lights are out).
Winix A231 Tower Air Purifier

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.
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