F.A.Q.

General Air Purifier Questions

How big of an area will this clean?

Your Winix Air Purifier room size will depend on the model you have. Each Winix Air Purifier model is AHAM Verified to an optimal room size based on its Clean Air Delivery Rate (CADR). The Clean Air Delivery Rate (CADR) is the removal rate of particles in a given period of time and the method of calculation is the Smoke CADR multiplied by 1.55 to get the optimal room size. This recommended room size is based on an 8ft high ceiling and is measured off the highest fan speed (Turbo) in CFM (Cubic Feet per Minute).

Room Size = Smoke CADR x 1.55

AHAM Verified Room Size (sq ft)
(based off an 8ft high ceiling)
CADR – Clean Air Delivery Rate
(Dust / Pollen / Smoke)
A230230149 / 154 / 147
A231230149 / 154 / 147
HR900300200 / 220 / 194
5300-2360243 / 246 / 232
5500-2360243 / 246 / 232
6300-2360243 / 246 / 232
C535360243 / 246 / 232
C545360243 / 246 / 232
C555360243 / 246 / 232
AM80360233 / 240 / 230
AM90360233 / 240 / 230
D360360233 / 230 / 235
D480480312 / 348 / 310
C909500336 / 384 / 323
XLC620>400 / >355 >400
XQ698>400 / >450 / >450
Are air cleaners good for allergy sufferers?

Yes, air purifiers have been tested and shown to help remove allergens and many other particles and odors from the air. All Winix Air Purifiers have True HEPA filtration which will capture 99.99%* of particles such as pollen, dust, pet dander, smoke, and other ultrafine particles (as small as 0.003 microns). Overall, studies have shown that Air Purifiers can:

  1. Reduce allergies
  2. Fight asthma and other respiratory issues
  3. Reduce smell and odors
  4. Clean air from pet’s hair
  5. Help you live a healthier lifestyle
  6. Protect you against outdoor pollution
  7. Decrease risks of contamination
  8. Reduce headache causing allergens
  9. Cleans the air when you’re cooking
  10. Benefit your skin

Source: Accuweather

What certifications do Winix air purifiers have?

We feel that it is extremely important to provide customers with as many certifications as available, in order to provide assurance of product effectiveness.

  • AHAM Verifide® – Winix proudly participates in the reputable AHAM (Association of Home Appliance Manufacturers) Clean Air Delivery Rate (CADR) program which is tested and proved for their ability to remove smoke, dust, and pollen from the environment. The Association of Home Appliance Manufacturers (AHAM) is one of the most reputable standards for air cleaner performance in the industry. Their standards and methods of testing are credibly recognized and valued by many manufacturers and retailers in the U.S market.
  • Energy Star is the trusted, government symbol for energy efficiency, helping you stay cost efficient while protecting the environment. The energy efficiency of ENERGY STAR certified models is measured based on a ratio between the model’s CADR for Smoke and the electrical energy it consumes, or CADR/Watt. All Winix Air Cleaners are Energy Star qualified products.
  • UL (Underwriter’s Laboratory) and ETL Safety –UL certified means that the product meets specific, defined requirements that are often based on UL’s published and nationally recognized Standards for Safety.
  • CARB – The California Air Resources Board, also known as CARB or ARB, is the “Clean Air Agency” of the California State Government. All Winix Air Purifiers sold in North America are CARB tested, approved and issued an EO certificate.
  • FCC – FCC certification is a certification for US made or sold electrical goods. It verifies that the radio frequency emitted is within the approved limits of the Federal Communications Commission (FCC).
  • Prop 65 – All of our products abide by the California Prop65 hazardous material list requirements.
How often do I need to replace the filters?

It is recommended that all True HEPA filters be replaced every 12 months to maintain the best performance and efficiency from your Winix air purifier. Depending on the type of carbon filter your model has, it will need to be replaced every:

Activated Carbon Filter: 3 months

Washable AOCTM (Advanced Odor Control) Carbon Filter: 12 months

Coated DeOdorization (CD) Carbon Filter: 12 months

Ultimate Pet Pre-Filters: 1 month

When the filters need to be replaced, the Filter Replacement Indicator LED will also illuminate on the control panel. With proper care and use, the Washable Fine Mesh Pre-Filter is a permanent filter and does not need to be replaced.

How do I replace the filter?

Proper instructions for replacing your filter will be in your user manual or on the back of your new replacement filter box, however the general steps for replacing your filters are below:

  1. Remove the front panel by grasping its upper edge and gently pulling forward.
  2. Remove the Pre-Filter, then the old filters behind it.
  3. Remove the protective plastic bag from the new filters.
  4. Install the filters until they fit securely in place in this order:
    • True HEPA Filter (back)
    • Carbon Filter (middle)
    • Pre-Filter (front)
  5. After filters are installed, close the front panel.
  6. After replacing your True HEPA Filter, place the Pre-Filter back in and close the Front Panel. While the unit is on, hold the Filter Reset Button for at least 5 seconds until you hear the beep. After the beep, the Filter Replacement Indicator will disappear. Your Winix True HEPA is now reset.
Can I leave my air purifier on all the time?

Yes you certainly can and we actually recommend doing so because your air purifier uses smart sensors to adjust the fan speed. During auto mode your model will be automatically adjust the fan speed that is necessary to maintain a healthy, comfortable environment. By leaving your unit running it will continuously be exchanging your indoor air and filtering impurities. When the room is darkened, the unit automatically activates Sleep Mode to ensure continuous, quiet and energy-efficient operation. It changes back to Auto Mode in the presence of light.

Where is the best location to place my air purifier?

To find the best location for your air purifier, you’ll first want to choose the room you want it to be in by asking yourself these three questions:

  • Where do I spend the most amount of time (such as your living room or family room)?
  • Where do I have the most concern about odors or allergens (such as in your kitchen or where your pets are)?
  • Where will it help me the most (such as in your bedroom when you are sleeping)?

After choosing the room, you’ll then want to follow these guidelines to decide on the best room location:

  • Allow 12 ~ 18 in. of space between TVs, radios, and other electronics
  • Allow at least 12 ~ 18 in. from walls for maximum air flow
  • Place indoors away from direct sunlight
  • Only place on hard, flat surfaces
There is an odor coming from my air purifier.

Don’t worry. Sometimes when the unit is new, the materials from the filter can “outgas” when they are first opened. Leave the unit running for a day or so and it should clear up. If you are concerned about this, leave the unit running on high in a separate room during this period. It should clear up overnight.

  1. Odor can occur when filter is contaminated
    – Please replace your carbon and HEPA filter and clean or wash your prefilter
  2. Washable AOCTM Carbon filter can cause Odor if not properly washed and dried.
    – Please follow the instruction on your user manual for proper maintenance
There is a strange sound coming from my air purifier

Sometimes when the room is very quiet, you may hear a chirping or buzzing sound. The occasional sound is from large particles passing through PlasmaWave®, it is normal and does not signify product failure. This is nothing to worry about and it’s working properly to clean the air. If you don’t like the sound, you can turn the PlasmaWave® function off from your control panel.

Check if there is anything inside the unit (See through the air vent) – Turn the unit upside down to take out whatever got caught inside (Do not try to open the unit)
Check if any part of the unit is loose Need to tighten the loose screws if any – If the fan is making the noise, needs to go through WRA process
Small Flickering noise could be caused from PlasmaWave® – Sometimes when the room is very quiet, you may hear a chirping or buzzing sound. The occasional sound is from large particles passing through PlasmaWave®, it is normal and does not signify product failure. This is nothing to worry about and it’s working properly to clean the air. If you don’t like the sound, you can turn the PlasmaWave® function off from your control panel.

What does the Winix Limited Warranty cover?

The Winix Limited Warranty covers any parts of the machine to be free of defects and provides service and support for the duration of the warranty period from the date of purchase. If any part is found to be defective during the warranty period, Winix will repair or replace the defective part or unit.

The Limited Warranty will be honored under the following circumstances:

  • If purchased through an authorized dealer or retailer.
  • Purchase date is within the warranty period (see list for warranties on specific model numbers below).
  • The unit has been confirmed defective after troubleshooting with the Winix America Customer Service Team.
  • The unit has been operated based on the user manual instructions.
  • Genuine Winix® Replacement Filters have been used in the unit and have been changed according to the longevity or filter reset light on the display panel.

The Limited Warranty will be voided if:

  • Non-Winix Brand filters are used in the unit.
  • One has tried to manipulate or make unauthorized technical changes to the unit.
  • Physical damage, abuse, or mishandling has been done to the unit to where it doesn’t function properly.
  • The unit has failed to comply with the user manual instructions.
  • The unit has been used outside of North America’s voltage capacity outlets.

* For more information visit https://www.winixamerica.com/terms-and-conditions/

What is 3, 4, and 5 Stage Air Cleaning?

Depending on the model you have, your air purifier will be designed to have 3, 4, or 5 stages of filtration. Each stage is counted as a level or layer of filtration where particles or odors are captured. Stages of filtration offered by Winix include:

Ultimate Pet Pre-Filter – First line of defense against pet hair, dander, and visible particles.
Washable Fine Mesh Pre-Filter – Captures the largest airborne particles found indoors
Carbon Filter – For absorbing and trapping odors, VOCs, and household gases (3 Types depending on your model; Activated Carbon Filter, Washable AOC™ Carbon Filter, Coated DeOdorization (CD) Carbon Filter).
True HEPA Filter – Captures 99.99%* of airborne allergens including pollen, dust, smoke, pet dander, and other ultrafine particles as small as 0.003 microns.*Based on independent laboratory tests conducted on inanimate particles as small as 0.003 microns.
PlasmaWave® Air Cleaning Technology
3 Stage Air Cleaning

Carbon Filter
True HEPA Filter
Washable Fine Mesh Pre-Filter or PlasmaWave®
4 Stage Air Cleaning

Washable Fine Mesh Pre-Filter
Carbon Filter
True HEPA Filter
PlasmaWave®
5 Stage Air Cleaning

Ultimate Pet Pre-Filter
Washable Fine Mesh Pre-Filter
Carbon Filter
True HEPA Filter
PlasmaWave®

What is the Air Quality Indicator and How does it work?

The Air Quality Indicator is a visual indicator displays real-time air quality in the room with LED lights.

There will be a color-coded LED light on your control panel that indicates one of three levels of Air Quality: Red (poor), Amber (fair), and Blue (good).

For the XQ, there will be four levels that include: Red (poor), Amber (fair), Green (good), and Blue (excellent).

The AQI works with smart sensors that first detects particles or VOCs in the room. The AQI then calibrates the indoor air quality based on the volume of particles or VOCs detected in the room.

When in Auto Mode, the fan speed adjusts according to the detected amount of gas or particles.

When in Sleep Mode, the AQI light is turned off.

What do the colors mean on the LED?

The LED on the unit that is displayed in different colors represent the air quality in your space.

All Winix Air Purifiers have the AQI (Air Quality Indicator) LED and the Tower XQ also provides the actual contamination figures (PM2.5) on the front hidden display.
All models except the Tower XQ has 3 colors for the AQI, which represents Good for Blue, Fair for Amber, Poor for Red. For Tower XQ it has an additional color which is Green. (Blue is for Excellent in this model, and Green is for Good).

For the PM2.5 level display for Tower XQ, it will show as below.

1~15

Excellent

16~35

Good

36~75

Fair

Above 75

Poor

How many Fan Speeds does my unit have?

Winix Air Purifier have 5 fans speeds which are: Low, Medium, High, Turbo, and Quiet during Sleep Mode. The A230 and A231 models will just have 4 Fan Speeds (Low, Medium, High, Quiet).

Do the air purifiers emit harmful Ozone?

Winix air purifiers do not emit harmful Ozone. It is important to know that safe emission levels should be under 0.05 ppm. Winix products rest lower than 0.01 ppm, leaving you to enjoy the benefits of purified air without worrying about harmful ozone. Air purifiers certified by CARB ensure the unit’s ozone emission level is low enough for consumers to use without having concerns about health. (CARB limits 0.05ppm ozone emission). Winix offers only CARB compliant air purifiers. In fact, Winix air purifiers emit such low levels of ozone that they are considered harmless.

Ozone exposure is more common that you think. Even the purest places on earth like refreshing mountain tops or the beach have ozone present. According to Ozone in the Air, typical ozone concentrations found in the natural atmosphere average at 0.125ppm.

Please refer to our blog ‘Ozone a fresh perspective’ for more information. (https://www.winixamerica.com/2020/11/10/ozone-a-fresh-perspective/)

What is the Air Changes per Hour for my unit?

All Winix air purifiers were verified for its recommended room size under 4.8 Clean Air Changes per hour. This means it will clean the corresponding size of the room 4.8 times in an hour (Every 12 minutes). However, the ACH(Air Changes per hour) will change based on the room size you use. If the room size is bigger than the recommended, the ACH will decrease accordingly. For example, if your unit is a 360sqft room size model, and you run it in 1,740sqft size of a room (4.8 times bigger than 360sqft), it will work with only 1 ACH. But AHAM does not recommend the usage of an air purifier in a space that would cause the ACH to go lower than 2 ACH (As it wouldn’t perfectly reduce the particles in your air). The recommended ACH is 4.8 or more as it will give you the best quality of air.

  • Based on an 8ft ceiling height
ACHACHRoom Size (in sq ft)
5 ACH (every 12 min)5348464290222600674484
AHAM Standard4.84360480300230620698500
4 ACH (every 15 min)4435580363278750843605
3 ACH (every 20 min)358077348337010001123807
2 ACH (every 30 min)28701160725555150016851210
1 ACH (every hour)11740232014501110300033702420
How do I connect my unit to the Winix Smart APP?

Once you have the Winix Smart App downloaded in your phone, please follow the steps provided in the Winix Smart Quick Guide which you would have had in your unit box. You can also visit our blog Winix Smart (https://www.winixamerica.com/2020/11/03/winix-smart-app/).

Basic Steps are as below.

  1. Download the WINIX SMART app on your device.
  2. Login or Register
  3. Add Your Unit
  4. Connect to a Local Wi-Fi Network
  5. Pair to the WINIX SMART Signal
  6. Define Your Unit Name and Location.
  7. When set up is complete, the Wi-Fi Indicator will light up.

Once you’re connected, you will be able to explore all the benefits of our APP

What is the MERV rating for my unit?

Winix True HEPA air filters are not MERV rated as they exceed the ASHRAE test protocol 52.2 used in determining the MERV ratings. The MERV scale is primarily a Furnace Filter Grading Scale in the US. Furnace Filters are meant to maximize airflow which is why they don’t perform as well as EPA, HEPA, and ULPA filters for capturing particles.

How does the Sleep Mode work?

Sleep mode is a feature that will help you sleep during night by turning off the LED lights and decreasing the noise level. When activated, all LEDs on unit will go off, and Sleep Mode indicator LED will come on with 33% of brightness of other LED lights. Fan Speed will go down to the lowest possible speed, which will be lower than the ‘LOW’ speed of the unit. Can be activated manually by pressing either the mode button or the fan speed button (depending on your unit).

Also could be activated automatically when brightness of room gets dark (Less than 2Lux) for more than 1 minute. (Automated Sleep mode is not featured for A230 / A231)

In Automated Sleep Mode, it will deactivate if the room gets bright (more than 3Lux) for more than 1 minute.

In Sleep mode, PlasmaWave® will be deactivated automatically. If needed, could activate the PlasmaWave® by pressing the PlasmaWave® button without deactivating the sleep mode

How do the sensors work? What type of sensor does my unit use?

All Winix Air Purifiers have one or more Smart Sensors depending on the model.

Odor Sensor – Senses odorous gases and VOCs in the space. (All Winix Models equipped. Average level of air quality detected in the aging stage becomes the base and is shown as ‘Good’)

Particle Sensor – Senses certain size of particles in the air
(Counts the number of particles. PM10 for HR900 / PM2.5 for Tower XQ)

Light Sensor – Senses the amount of light in the room to activate ‘Automated Sleep Mode’ (Sleep mode activation during Auto Mode – All Winix air purifiers except A230 / A231 equipped)