Discover Why Your Air Purifiers Blinks Red

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Written By Jamila W.

Red is often used as an indicator of danger or impending issues as the color with the highest wavelength, making it a perfect warning signal because it is the least scattered color.

This applies the same to most air purifiers. Regardless of the brand, red is a warning sign to highlight potential issues within the device. As much as it is an important indicator, there is nothing to worry about. As automated as an air cleaner is, the human touch is sometimes needed to get things done.

In this article, discover why your air purifier blinks red with practical methods that will resolve your headache.

What Is That Red Blinker?

Depending on the brand of the air purifier, a red light can signify different issues. This is reliant on the number of sensors available on an air cleaner. However, red is a universal signal to warn users of impending issues that need immediate rectification.

Why Is My Air Purifier Red?

The most recent air cleaners usually have two main areas that turn red. Commonly known as an indicator of air quality and filters, red is one of the key ways to communicate to homeowners that the air cleaner needs assistance. However, it is vital to note that this differs from product to product.

In most cases, air cleaners turn red due to these reasons:

Poor Air Quality

When the air cleaner’s in-built air quality sensor turns red, it signifies substandard air in a confined area. This usually happens when the area is filled with harmful pollutants, pathogens, and dander in the air. Invisible to the naked eye, it can be an imminent threat that needs quick damage control to prevent potential respiratory problems. From irritation in the throat to dizziness and fatigue, the list of drawbacks to one’s health is endless.

Clogged or Faulty Filter

Air cleaners that turn red under the filter sensor indicate a clogged or defective filter that needs immediate replacement. This can only be determined by taking apart the air purifier. It is vital to note that a filter should be replaced every 12 months or less depending on the surrounding atmosphere and the usage of the air cleaner. If your device comes with a HEPA filter, you should consider replacing it every 6-12 months based on your home’s pollution level: which can be easily seen on the air quality sensor. For allergy or asthma sufferers, consider changing your filters more frequently, like every 3-6 months is encouraged to ensure optimal air quality at home.

Internal Glitches

Sometimes, an air purifier turns red to no fault of its own. It could be an internal hiccup within the system, unrelated to filter damage or air quality. This commonly occurs when a filter has just been replaced or when an air cleaner goes unused for an extended period of time. In rarer cases, the red indicator could highlight an overwhelmed product needing little human help. 

How To Fix It?

Once the sensor turns red, it is essential to get to work. The best way is to diagnose the potential root causes before applying a practical solution. To combat these pesky red lights, we have compiled a few quick tips below to help you.

Improve Air Quality

For air cleaners that turn red due to pollutants in the air, the fastest way to resolve this is to make them work harder. Start by switching on your highest air purifying setting. This helps ensure that the device is actively working to reduce the amount of pollutants in the air. Remember to watch for a few hours to ensure the air quality indicator stops turning red. If there are still no changes to the air quality sensor, it might signify a faulty air cleaner that needs further assistance. Hence, contacting the product’s helpdesk online is probably more viable in some circumstances.

Check or Replace Your Filter

A red filter sensor means it’s high time to change your filters or take your air cleaner apart to determine the root cause. Begin by taking apart your air purifier to discover the red blinker’s cause. If it is related to an incorrectly installed filter, adjust it accordingly and restart your air purifier. 

For clogged filters, decide if the obstruction can be removed. If yes, gently take it out of the filter and start your air cleaner back up. This should eliminate the blinking red light. In cases where the particles are impossible to remove, the best way to move forward is by replacing your filter. The same approach applies to a faulty filter.

A pro tip is to mark down the dates you replaced the filters so you can repeat the process in 6-12 months, depending on the health conditions of all residential occupants.

Reset Your Air Purifier

One of the easiest ways to know if your air cleaner is working incorrectly is to know when you replaced your filter. If the date is recent, that’s when you know that your air purifier might be struggling internally. In addition, most devices often need a quick reset after a filter replacement because it needs time to get updated to its new status. Depending on the brand of your air cleaner, resetting it can range from pressing down on the on/off button to a specific spot close to the red sensor, like a Winix air cleaner.

In Summary

An air purifier turns red for a multitude of reasons. The key lies in proactively understanding your device, from a needed filter replacement to a hard reset. This ensures that you continue having better, breathable air that alleviates potential respiratory issues.  As simple as all air cleaners work, a little diligence goes a long way to keep your home cozy, clean, and comfortable. With a schedule for cleaning your devices, anything is possible.