Informational Guide

Alen Air Purifier Won't Turn On (Troubleshooting Guide)

by Josh M

With the US pumping about 67 million tons of pollution into the atmosphere [1], it can be hard to know how to protect yourself from the health effects of poor air quality. [2]

Alen air purifiers are a highly effective clean air tool but can need fixing sometimes. We have discovered the most effective ways to troubleshoot your Alen air purifier; check out our tips to get back up and running fast.

Cord Not In Correctly

The first step in Alen air purifier troubleshooting is confirming that your unit is plugged in correctly. While you are checking the wall outlet, it is important to confirm that you are using the right type of socket that matches the plug.

Cord Damaged

Carefully inspect your unit’s power cord to ensure that it has not been damaged. If the power cord has been damaged, contact customer service for a replacement.

Blown Fuse or Wall Socket

If all is as it should be, the next step in Alen air purifier troubleshooting is confirming if the fuse or socket has blown. A blown fuse can be easily fixed by you or a family member, but a blown power source requires a qualified professional’s help.

To test the wall socket, try plugging another appliance into the same socket to see if it works.

Incorrect Power Size For Device

Another common problem for Alen air purifiers comes down to the plug’s power rating. An incorrect power rating means that the plug does not have enough power to run your unit; aim for an equal power rating or higher.

Alen Air Purifier Color Indicator: What Do They Mean?


When a red light emits from your filter life indicator light, it means that it is time to install a new filter (filter change indicator). Depending on the air filter you use, it is possible to either replace your HEPA filters or clean your old ones and reinstall them. Replacement filters are readily available online.

Alternatively, a red light may mean that your indoor air quality is poor.

Alen Air Purifier Needs Filter Change


An orange light on your Alen air purifier means that it is currently in standby mode. You can disable it by resetting it according to more in-depth manual instructions. [3]


On certain Alen models, blue light can mean that your air purifier is working perfectly fine. However, if the blue light is flashing, that may be an indicator that something needs your attention; inspect your air purifier as well as the Alen air purifier filter for issues.


If you spot a yellow light on your Alen air purifier, it may mean that the air quality is fair with moderate airborne particles in the room. This means that you may need to adjust the settings for optimal filtration of airborne particles and dust particles via the Alen air filter.


A green light emitting from your Alen unit can either mean that it is turned on or that it has been successfully reset and is ready to continue working.

Other Alen Air Purifier Problems (How To Fix Them)

Filter Life Indicator Light Won’t Go Out

If your Alen filter light does not go out after installing your replacement filter or pre-filter, it may not be sitting right in the air purifier.

To reinsert your replacement filter correctly, consult your user manual. If this does not work, there may be an issue with either your new filters or the unit itself; contact customer service to book a technician as soon as possible.


An Alen air purifier beeping can mean that it needs a hard reset to its system; follow your manual’s guide for specific steps. If the beeps are at a high pitch, you may need to readjust your air filter. If regular beeping continues, contact the customer service team for more assistance.

Fan Not Working

The Alen air purifier fan is a key element in its filtration process that can be prone to getting clogged.

Confirm that nothing is blocking the fan by performing an unplugged inspection on your unit. If the fan is not making a sound or the fan speed is too low, there may be a motor or blade issue that requires customer service assistance.

Alternatively, your unit or socket may have blown a fuse – unplug it for a minute and replug your unit to test this. If a fuse has blown in your unit, you may need to replace it.

Not Circulating Air

Fan issues are one of the most common problems for Alen are purifiers. If none of your Alen air purifier fan speeds are circulating air properly, first turn it off and unplug your unit; inspect it carefully for any blockages.

If it continues to perform poorly, contact customer service for more information.

Air Quality Monitor Not Working

Your indoor air quality indicator not working often occurs when dust or an object is blocking the sensor – cleaning the sensor typically helps fix the issue. If the air quality monitor does not improve, contact the customer service team to book a technician.

Resetting Alen Breathesmart Air Purifier: How To Guide

To reset your Alen air purifier, we highly recommend consulting your unit’s manual for specific instructions, as models like the Alen Breathesmart may be different. However, a general guide to most models can be helpful. Some Alen air units suggest holding the filter button for five seconds or waiting for the light to turn green.

Getting The Most Benefit From Your Alen Air Purifier

Match The Model With The Use & Room

Room size is a vital factor in selecting the right air purifiers. When deciding which Alen air purifier is right for you, it is best to consider what rooms you tend to spend your time in, as well as when you most often want an air purifier.

Not all air purifiers are built the same, which is why the rooms you have in mind are important. Smaller ones can only cover smaller areas, and larger ones are suitable for large spaces. Measure out your room carefully and ensure you choose one that covers all that and then some.

Air Purifier Room Placement

Once your Alen air purifier and Alen air filters have arrived, it is time to put the unit in the right spot for optimal air pollution filtration. As a general rule, the best spot for an air purifier involves a combination of the following:

  • A foot away from the wall or furniture
  • Facing into the room and away from the walls
  • Away from corners
  • Not blocking the doorway or halls
  • Away from other electronics
  • In the right-sized room
  • Plugged into the right power source
  • Near an odor source

Alen Air Purifier Placement

Usage Time Of Day

Typically, you do not need to leave your air purifier running while you are out of the house for long periods. Therefore it is vital to consider when you are typically home and prefer to use your air purifier.

Modern air purifiers can be programmed to start and end cycles at certain times, while quieter ones are available for those who want some mild white noise to sleep to.

Use Various Settings Wisely

By consulting your unit manual or product description, you can see a complete list of all the modern settings that can help your air purifier run effectively and improve indoor air. There you can see its typical sound level, the fan speed settings, timers, and light options, as well as any other specialist functions.

We highly recommend experimenting with these settings to find the right schedule for your home.

Don’t Run The Air Purifier 24/7

While some blogs may recommend running your Alen air purifier for 24 hours a day, we do not recommend it. Just like any other machine, running your Alen air purifier can cause it to become overworked and break down much faster.

Additionally, this causes it to filter more pollutants which can cause you to have to replace your Alen filters much faster than usual.

It may be tempting, but there are many situations in which you can simply leave it off or on standby, for example, when you are at work or the windows are open.

Alen Air Purifier Won’t Turn On FAQs

Where do you find Alen air purifier filter replacements?

When you see the filter light go on, It’s time for filter replacement. You can typically find Alen filter replacements and HEPA filters in their store and on sites like Amazon. Confirm that the product description matches your air filter type before purchasing.

How long do Alen Breathesmart filters last?

Alen Breathesmart filters typically last around six months with regular use; this time estimate will change depending on the air quality in your area and how often you use your unit.

Can you wash Alen filters?

If you have a HEPA filter, you can only replace it and put the old filter in a plastic bag. Some air purifier types can be washed or at least vacuumed to prolong their lives; read the product description for more specific instructions.

How do I clean and change my Alen air purifier?

Alen air purifier filters are easy to change, and cleaning your unit is a simple process. Change your filter by unplugging your unit, pulling on the white tab under the cover, and putting in the new filter from the bottom up. The outside simply needs a vacuum with a soft brush or a wipe down with a dry dust cloth.

Do Alen air purifiers produce ozone?

Alen air purifier models are certified ozone-safe by the California Air Resources Board, according to Alen’s website. [4]


With an Alen air purifier by your side, you can breathe easier knowing that your home’s air quality is free from nasty pollutants. We hope that our handy guide to Alen air purifier troubleshooting helps you get your air purifiers back to cleaning dust particles from the air.

Remember to register your air purifier product warranty with the manufacturer to ensure you get the best value possible.



Related ArticleAlen Air Purifier Reviews

Last Updated on January 9, 2023

Josh M

My name is Josh and I am obsessed with the HVAC industry. I created this website to help HVAC techs of all levels get the best out of their heating & cooling systems. I have spent thousands of hours studying air conditioners, heaters and home air products so you can learn & buy with confidence. Learn more about the team here.