Homedics Air Purifier Red Light Turning On: 4 Causes and Troubleshooting Guide

Why is the Homedics air purifier red light turned on or blinking? If you also have this query and don’t know what to do about it, don’t worry! You are on the right blog post. Stick with me till the end, and I’ll walk you through demystifying that confusing red blink in 4 steps.

Quick Answer

To handle that Homedics air purifier blinking light, you must first understand what it’s trying to tell us. This light has two main modes:

  1. Solid red light;
  2. Blinking red light. 

Generally, a solid red indicates a general problem with the unit. However, when the red light starts periodically blinking, that signals a deeper problem. This could include:

  1. Problem with the device itself;
  2. Loose wiring;
  3. Failure to reset the air purifiers.

However, the above are just a few culprits behind the Homedics air purifier red light. Continue reading below, to learn more details about potential reasons behind this problem and a method to get you out of this confusing situation. Let’s get started!

Related Topic: Blue Air Purifier Red Light: 5-Step Easy Solutions Guide

What is the Role of UV-C Bulb and How it Works?

Every purifier has a UV-C bulb, and it works to destroy airborne microbes like bacteria, viruses, and mold spores as air passes through the cleaner. 

UV-C light

This bulb emits a specialized type of UV-C light that acts at the molecular level to kill or inactivate the germs effectively. This provides an extra layer of germ removal on top of the HEPA filter’s particulate filtration.

Exploring 4 Causes of the Homedics Air Purifier Red Light

The following are the four reasons that either result in solid or blinking red light. Let’s explore them:

Homedics air purifier blinking red light causes

1. Filter Replacement

When you experience a solid red light on your Homedics purifier, it indicates that your filter’s life is up and it needs replacement. Check the status of your filter and swap it with a new one. The red light should go away once the device starts operating with a new filter.

2. Failing UV-C bulb

A malfunctioning UV-C light is one of the leading reasons behind a blinking red light. The bulb can get burnt out or tripped due to variations in the voltage or mishandling of the device. Ultimately, this can lead to a decrease in the germicidal effectiveness of the air purifiers.

3. Low-Grade Air Quality

Poor air quality due to smoke, pets, or pollution can also provoke the light. When the indoor air is more polluted, the device has to work overtime to cleanse extra particles and gases. The red light indicates that your air purifier is overburdened and is struggling to keep up.

air pollution

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4. Defective Air Purifier

Like any gadget, general wear and tear can also cause glitches in the purifier over time. Faulty sensors, loose wiring, and motor issues can all manifest as a blinking red light. Also, flickering red may point to an internal hardware problem if your filter looks fine.

A Step-by-step Guide on Fixing Homedics Air Purifier Blinking Red Problem

Once you have spotted the Homedics Air Purifier Blinking Red Problem, it’s time to fix the unit. Most of the time, a faulty UV-C bulb is the main guilty party. Let’s see the steps that are required to tackle it:

Material and Tools Needed

The following are the tools that you need to fix the red light on your purifier:

  1. New UV-C bulb;
  2. Philips head screwdriver;
  3. Protective gloves;
  4. Replacement HEPA-type filter (if needed).

Step 1. Remove the UV-C Bulb Cover with Caution

First, Be sure to unplug the cleaner and remove the power cord. Put on gloves for safety, and then follow this guide:

  • Remove the outer plastic covering;
  • Pull out the HEPA filter;
  • With the help of a screwdriver, detach the screws holding the UV-C cover. Store the screws in a safe place and lift off the cover.
air cleaner disassembly
Credit: www.youtube.com @louiskong25

Step 2. Pull Out the Bulb from the Chamber

Once you have spotted the defaulted bulb, you can remove it in the following way:

  • Handle the LED gently with both hands;
  • Twist it counterclockwise while pulling straight out to remove it. Be careful not to apply too much pressure, or you may break it.
UV-C Bulb extraction
Credit: www.youtube.com @louiskong25

Step 3. Put the New Ultraviolet Light Bulb

Once the old bulb is out, get the new one in hand and place it in the following way:

  • Put the new bulb in the holder. I would suggest you go for Sendextra UV-C bulb because of its easy installation and great performance. It also consumes less than 5 Watts which makes it an ideal pick.
  • Align the pins with the socket holes;
  • Gently push straight in while twisting clockwise. Apply a little pressure to seat it completely.
UV-C Bulb installation
Credit: www.youtube.com @louiskong25

Step 4. Place the Covers

To finalize the installation process, you have to place the cover back in the following way:

  • Put the cover back on with the original screws;
  • Replace the HEPA-type filter if needed. For this, just place a new filter instead of the older one;
  • Plug back in and power on the air purifier to test. The red light should stop blinking now.
filter change

Want to have a visual explanation of how to change your UV-C light bulb? This video can help you out.

YouTube video

What to Do If the Homedics Air Purifier Blinking Red Light Even After Bulb Replacing?

Are you still facing a blinking red light issue despite replacing the LED? The issue could be something else. Let’s have a look at some additional solutions that can help you:

1. Cleaning the Air Purifier

The air filter can sometimes trap dust or pet dander in the vents. To handle this situation, you have to clean the device. You can follow these steps to scrub the purifier:

  • Step 1: Open the lid of the purifier with the help of a screwdriver;
  • Step 2: Take out the filter;
  • Step 3: Use a soft brush to clear debris blocking the intake or outflow openings;
  • Step 4: Place the filter back and put the cover on it.
filter cleaning

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2. Resetting the Filter Replacement Indicator

Changing the filter can fix the replacement indicator. However, If you have already swapped the filter, try resetting the indicator light with the help of the reset button. For this purpose, try these steps:

  • Step 1: Locate the reset;
  • Step 2: Press and hold it until you hear a sound or the light goes off;
  • Step 3: Release the reset button. 
the 'Filter Indicator' button

Note: The reset process may vary from device to device. Consult the manual to know the exact reset method of your purifier.

3. Analyzing and Maintaining the Quality of Air

If the red light is still blinking, you need to take care of air quality. If you find the air pollution above the expected levels, take the following measures:

  1. Check the indoor air quality with a monitor like SAF Aaranet 4.
  2. Open windows to improve ventilation.
  3. Control humidity with the help of a humidifier.
  4. Clean all the carpets and rugs.

This will result in more clean and fresh air.

4. Get in Touch With Homedics Customer Support

Despite trying everything, it’s time to bring in the experts if the red light still will continue blinking. You can contact Homedica customer support via these channels:

  1. To get in touch via Phone: 1-800-466-3342 for live assistance.
  2. For email assistance: cservice@homedics.com to get help from the service desk.

While contacting the company, explain the issue and troubleshooting steps you took. They can suggest the next best steps or replacement parts if needed.

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Why is the red light on my Homedics air purifier solid?

You may see a solid red light on the purifier when it needs filter replacement, indicating it’s time for standard maintenance.

What does it mean when the red light on my Homedics air purifier blinks rapidly?

When the red light on the device blinks rapidly, the device indicates a malfunction, such as a faulty sensor or internal hardware issue.

How do I reset my Homedics filter light?

To reset the filter light, locate the reset button from the control panel as specified in the user manual. Press and hold it after changing the filter; this will reset the light and the Homedics air purifiers. 

Does the UV-C Bulb Require to Be Changed Frequently?

The UV-C bulb has a life of up to 10,000 hours. It can last for 12-18 months even if used continuously. Therefore, you don’t have to replace it frequently.


Summing up, like any appliance, Homedics purifiers can develop issues over time. However, by properly identifying the core problem, you can manage the situation quite well. 

For example, you should change the filter if the Homedics air purifier red light is static. On the other hand, if the red light is blinking, changing the bulb, cleaning vents, or managing the air quality can help.

Nonetheless, providing frequent maintenance, taking care of air quality, and cleaning the device can enhance its life and prevent that cryptic red blinking light.