My Winix Has A Blinking Red Light—Why? What To Do?

If you own a Winix air purifier, you have probably seen the red blight blink continuously at one time or another. Why does this light blink, and how can you stop it? We researched to answer this question, and here's what we found.

The red light on your Winix air purifier will continuously blink to alert you that you must change the air filter. Follow the steps below to replace it:

  • Remove the front panel.
  • Remove the old filter.
  • Install the new filter.
  • Reattach the front panel.
  • Reset the appliance.

We have provided the steps for replacing the air filter in your Winix air purifier. Keep reading to learn more about how to do this. We've also included tips on maximizing your appliance and troubleshooting minor issues.

Winix air purifier displayed at a store, My Winix Has A Blinking Red Light - Why? What To Do?

How To Fix Red Light Blinking In Winix Air Purifier

The most critical component of your air purifier is the air filter. When the air filter clogs with dirt and debris, the air quality diminishes.

The Winix air purifier is designed to blink when the filter needs replacing. The red blinking light should stop when the filter has been replaced.

Winix air purifiers use the following types of filters:


This is a pre-filter kit you can find on Amazon.

A pre-filter blocks large particles, such as dust, pollen, insects, hair, and fibers, from entering your environment. You should clean it every 14 days. 

HEPA Filters

HEPA stands for high-efficiency particulate air. This filter type blocks harmful particles such as pollen, smoke, lint, or dust mites. These filters need to be replaced every once a year. 

Activated Carbon Filters

You can find this filter on Amazon.

The carbon filter prevents air polluted with smoke, chemicals, and unpleasant odors from entering your room. This filter ought to be replaced every three months because it quickly absorbs pollutants and gets saturated, which can reduce its efficiency.

Coated De-Odorization (CD) Carbon Filter

This filter reduces unpleasant smells such as smoke, cooking, or pet odors. Its replacement schedule is once a year. 

Winix Washable AOC Carbon Filter

The AOC Carbon filter should be washed every three or four months but should be replaced once a year. When it becomes dirty,rinse it lightly under running water and let it dry for 24 hours. 

Winix air purifier on a white background

How To Replace The Air Filter In Your Air Purifier

The Winix air purifier is available in different models. Below is the description of replacing the filters of the Winix C535 like the one shown above:

  1. Pull out the upper edge of the front panel and place it aside.
  2. Take out the activated carbon filter and the HEPA filter and replace them with new ones. Ensure the carbon filter is in between the HEPA filter and pre-filter
  3. Place back the front panel, ensuring it has latched securely.
  4. Turn on the air purifier and press the reset button for five seconds, after which you will hear a beep.

You can find this Winix C535 on Amazon.

How To Reset Your Winix Air Purifier

Your air purifier can blink even though it's not time to change the air filter. If this is the case, all you have to do is reset your appliance by following the steps below:

  1. Next to the replacement filter light, you’ll see a drawing of a circular arrow, which is the reset button. 
  2. Use a paper clip or thin piece of wire and push it into the tiny reset hole, ensuring you don’t push too hard. 
  3. Press down for five seconds. Afterward, you’ll hear a beep, which means you have reset your appliance. 

Below is a video that provides a visual presentation of the steps above:

How To Maximize Using Your Air Purifier

To use your air purifier, you simply place it in a room and turn it on. However, there are ways in which you can benefit more from your appliance by doing the following:

Close Doors And Windows

Purified air will flow out of the room if doors and windows are open. However, this does not mean you cannot open them. You may do so periodically to let in fresh air. 

Replace Filters As Per The Manufacturer’s Instructions

As discussed earlier, the filters in an air purifier have a cleaning or replacement schedule. For your appliance to operate efficiently, change or clean the filters at the required time.

Keep Your Air Purifier On

To maintain continuous clean air, leave your appliance on at all times. If you let it run for only a few hours, the air quality will be good for that time only. 

Direct The Flow Of Air Towards You

If you are using the purifier in an ample space, you should make sure that the device is positioned so that the air is flowing in your direction. That way, you can enjoy the clean air the purifier produces. 

How To Troubleshoot Your Air Purifier

Replacing the filter of the air purifier

Now that you know how to reset your air purifier if it stops working, you may want to know how to solve minor problems that occur. The air purifier, like any other gadget, can malfunction.

While some issues may be too complicated for you to tackle, there are simpler ones that you can troubleshoot. The following are some tips to help you solve minor problems in your air purifier:

Air Purifier Does Not Turn On

If you switch on your gadget and it refuses to work, you first need to check if power is flowing. It's possible that you forgot to plug it in.

To solve the problem, plug it back in. Also, check if the cord or electrical outlet is damaged. If this is still not the problem, check the power rating of your appliance. 

For optimal performance, the power rating of your air purifier and power outlet should match. If there’s a difference, your appliance may not work and can get damaged. 

Low Quality Of Air

Replacing or washing the air filters at their scheduled time is essential. Forgetting or being too lazy or busy means you may compromise on air quality. 

Inadequate Airflow

If the air flowing out of your appliance is insufficient, you may have neglected to take the packaging off the filter before installing it. Low fan speed is another reason there isn’t enough airflow. Increase the fan speed to continue enjoying fresh, clean air. 

Too many obstructions around your air purifier can impede the proper flow of air. The area around the gadget should be clear. 

Push Or Touch Buttons Do Not Respond

An air purifier inside a bedroom with a woman sleeping on the bed

If the filter cover is not correctly placed, your air purifier may not respond. In this case, remove the lid and put it back as per the manual’s instructions. But if you suspect the buttons are faulty, call a technician to fix them. 

Strange Noises Coming From The Air Purifier

If you hear weird noises from your appliance, you must inspect it. Noise can occur due to an air filter that isn't fitted correctly. Check the filter and install it properly, if necessary. You should call a technician to check the machine if the noise persists.

In Closing

Winix air purifier displayed at a store

Whenever you see the red light blinking on your air purifier, it is a sign you need to replace the air filter. Sometimes, this light can blink even when the air filter is clean and working fine. In such a case, you need to reset it.

In addition to resetting your appliance, you should learn how to troubleshoot when minor issues crop up.

There are several ways to make the most use of your air purifier. Once you know how to do this, you’ll benefit more from using this gadget.

To learn more about air purifiers, read our previous posts below:

Honeywell Air Purifier Shutting Off

Honeywell Air Purifier Says to Check Pre Filter

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