What Does The Red Light Mean On A Honeywell Air Purifier?

Air purifiers are an essential part of every home. That said, it is necessary to maintain the appliance properly. We have researched the meaning of red light on Honeywell air purifiers and how to handle the situation.

Red lights on air purifiers may have numerous meanings depending on the type of light. Still, most of the time, they signify some sort of maintenance problem, such as not cleaning the air purifier for so long. 

A Honeywell air purifier's red light denotes clogged filters, incorrectly installed components, or a low Air Quality Index. If you want more information about air purifiers, continue reading!

Princeton,New Jersey, December 6, 2021 Honeywell - InSight™ HEPA Air Purifier, What Does The Red Light Mean On A Honeywell Air Purifier?

How To Fix The Red Light On The Air Purifier

Princeton,New Jersey, December 6, 2021 Honeywell - InSight™ HEPA Air Purifier, Extra-Large Rooms (500 sq.ft) Black , How To Fix The Red Light On The Air Purifier

In this section, you will read about how to fix the red light on the air purifier.

Check the filter

How Long Do Honeywell Air Purifier Filters Last - Air purifier high efficiency filter. PM 2.5 concept

Check the filter regularly. An air purifier's red light is typically caused by a blocked air filter or one that needs to be replaced. By taking the air purifier's casing off and looking at the component, you can quickly fix this.

However, when the filter is almost due for maintenance, it will emit orange light. This is why you should be aware of what a dirty air purifier filter looks like and be prepared for what will happen if you don't change the material.

Move the purifier 

A red light may occasionally denote the presence of unusually high levels of air pollution. The red light will serve as a warning if, for example, you live close to an active wildfire and the air purifier is having difficulty filtering all of that smoke. 

Since some areas of your home may be less contaminated than others, moving the air purifier about will help you troubleshoot this problem. Spending money on one of the best air purifiers for large rooms might be preferable if your space is heavily contaminated.

Resetting the air purifier

Rarely, the red light might simply be on by accident. When the sensors are overloaded, they falsely believe that the filter is too dirty or that the air is too polluted, even though neither is the case. In this situation, you must press and hold the red button for a few seconds until the device resets.

Where Is Honeywell Air Purifier Reset Button Located? 

There is no specific reset button in Honeywell air purifiers. Instead, the "prefilter" or "change filter" buttons should be pressed, depending on which is lit up. These buttons can be found on the top of the Honeywell air purifier unit's control panel.

How To Reset The Filter Light On A Honeywell Air Purifier?

  • Make that the filter is securely fastened in the housing after cleaning or replacing it.
  • Connect the air purifier to the outlet and turn it on.
  • On the control panel, look for the "Check Filter" or "Check Pre-filter" button.
  •  If the "Pre-filter" button is lit up, press it twice quickly to turn the light off.
  • Press and hold the "Check Filter" button for up to two seconds to cause the light to go out.

The light will blink twice in both situations before going off, signifying a successful reset procedure.

Change The Filter On a Honeywell Air Purifier

How To Clean Honeywell Air Purifier Filter - Comparison of an old, dirty, used HEPA filter versus a new one. Air purifier filter for pollutants

Turn the Honeywell air purifier off and unplug it before changing the filter. After that, carefully extract the filter and remove the air grille. Replace the grille, swap out the filter for one suitable for your model, and then turn the appliance on.

Steps to replace the HEPA filter and iFD filter

  • Find the rear grille and pull it off.
  • To access the iFD or HEPA filter, remove the prefilters.
  • Gently remove the filter and swap it out for a new, suitable HEPA or iFD filter.
  • Reinstall the grille and the prefilters.

What's The Difference Between A HEPA And An iFD Filter?

Various air purifiers eliminate airborne pollutants in the indoor environment with varying degrees of efficacy using purification technologies. HEPA filters remove over 0.3 micron-sized airborne particles in around 99.97% of cases.

IFD filters get rid of about 99.99% of small particles. Cost, consistency, noise, power consumption, and whether the filters need to be changed are all differences between the two types of filters.

The method employed to eliminate airborne pollutants is the most effective, though.

iFD Filter 

Intense field dielectric (IFD) filters, which are washable, reusable, and permanent, were introduced by Honeywell. This feature prevents the need for filter replacement.

Additionally, they use less energy and are quieter. IFD-based air purifiers, however, could start more expensive and only produce a modest amount of ozone.

Using an IFD permanent filter for a prolonged time venting the room is not recommended, even though the initial ozone level is not dangerous.

Finally, since no filtration standard exists, some models could not be as efficient.

Every two to three months, you should clean your filter. You must reinstall the permanent filter that is part of this product in the air purifier.

HEPA filter

What Is A HEPA Filter - Close-up view of the hepa filters isolated on the white background.

High-efficiency Air purifiers particulate air filters in between the fibers of their filter. As a result, the particles attached to its fibers are subsequently effectively removed from the air stream.

Unlike other washable air filters such as Intense Field Dielectric(IFD) filters, you only change this about once a year.

It can also apprehend 99.97% of larger particles measuring 0.3 microns or greater. HEPA air purifiers can be used in conjunction with other air purifiers or filters, such as an air ionizer or an activated carbon filter.

Check out this Honeywell HEPA Air Purifier Filter Kit on Amazon.

Common Problems With Honeywell Air Purifiers

There are common problems with the Honeywell air purifier, and here are some of the issues.

Fan Running Loud

If you are a first-time user of an air purifier, make sure to remove the plastic wrap covering from the filter. 

If you've previously used your air purifier, it might be running loud if it's time to change the filters since heavy airborne particles might clog the filter's pores and prevent airflow.

Check your filters and replace them when necessary, per the owner's handbook recommendations, or when the filter change signal flashes.

Additionally, ensure that nothing obstructs the grilles coming into or leaving the device. Nothing ought to be placed above the outflow.

Touch Panel is Unresponsive

Double-check that the device is plugged in and receiving power from an outlet. 

Ensure that the button you are pressing is active and not just an indicator light. Sometimes the labels on these lights indicate the mode the device is in, but pushing them is not recommended. 

In some models, if the grille is not restored correctly, the appliance will not work.

Can't Get Power To My Unit

The unit is not getting power to the unit because it needs an outlet to receive power, but a wall switch shouldn't be used to operate the outlet. Try connecting the device to a different outlet if this doesn't solve the problem.

What Do The Colors In A Honeywell Air Purifier Mean

A green light stands for good air quality. The amount of Volatile Organic Compounds (VOCs) in the vicinity is extremely low. Near-ideal air quality is present.

VOC refers to large chemicals in our homes released by the products we use to preserve or sustain our houses.

A yellow light stands for medium air quality. VOCs are present in the area in an appreciable amount. Air quality might get better.

A red light stands for poor air quality. VOCs are prevalently present in the neighborhood. It is essential to address the air quality as soon as possible.

How Long Does It Take For An Air Purifier To Clean A Room?

This mostly depends on the setting of the air purifier, the state of the air in your room, and its size. Your air purifier may need 30 minutes to clear the air in a small space. It could take up to two or three hours for larger rooms.

If possible, you can keep your air purifier running all day. The indoor air will be cleaner the longer you can leave it on. There isn't any obvious downside to leaving your air purifier on all the time. They are designed to run continuously day and night.


It is very important to regularly check and maintain the filters in your air purifiers. By doing so, you are protecting the overall health of you and your family. Hopefully, this article has been helpful in providing you with details on what the red light signifies and how to fix it.

You might also find these articles helpful:

Is Honeywell Air Purifier Filter Washable? [And How To]

Honeywell Air Purifier Burning Smell – What Could Be Wrong?

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