Smart filter filtrete

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Did You Know That Smart Air Filters Exist?

The Filtrete app on a phone indicating the smart air filter next to it is at 100%.

No, this isn’t a joke. Filtrete sells smart air filters that tell you when they need to be replaced. As funny as this might sound, it’s a refreshing example of how smart technology can improve our lives.

Why? Well, when’s the last time you replaced your air filter? If that question sends you into a cold sweat, congratulations! You understand why we’re so excited about smart air filters.

They Tell You When They Need to Be Replaced

No more calendars. No more writing the date on the air filter. Filtrete’s smart air filters have a built-in sensor that checks for changes in air pressure and air quality. These changes are sent to your phone’s Filtrete app via Bluetooth, and you can track the changes over time. When the air filter needs to be replaced, you receive a notification.

Sadly, all of this happens on your phone. The smart filters don’t work with Alexa or Google Assistant. But the Filtrete app has some neat features. It tells you if you need to improve air quality (by opening windows or buying an air purifier), and it tells you the size of the filter, so you don’t need to double-check before you buy a replacement.

A man replacing an air filter.

Additionally, the Filtrete app gives you the option to set up automatic Amazon Dash orders. When it’s time to replace the smart air filter, it’ll automatically order a replacement from Amazon so that you don’t have to hunt one down at the store.

We’re not sure why Filtrete’s smart air filters use Bluetooth instead of Wi-Fi (if your air filters are tucked in a basement, the distance could present a problem), but it probably has something to do with cost. Filtrete’s smart air filters are only $5 more than their regular air filters, which is pretty appealing. Wi-Fi connectivity, which would only be useful for some people, could make the filters more expensive than they should be.

Should You Buy Smart Air Filters?

Smart air filters can certainly make life easier and healthier. Unlike most “smart” products, Filtrete’s smart air filters solve an actual problem and are reasonably priced, to boot. If you always forget to replace the air filter, then smart filters are worth a shot.

Of course, you should keep an eye out for anything strange. These filters have only been on the market for a few months, and it’s hard to find product reviews that indicate how well the Bluetooth-based smart features work (or if the filter asks to be replaced earlier than it should). It’s also clear that 3M replaced an old product listing on Amazon with these, as most of the reviews date back to 2016 and make no mention of smarthome tech.

Buy on Amazon


IoT Smart Air Filters Powered by a Smart App & Alexa Skill


Working in lock-step with the 3M Filtrete™ team, ArcTouch designed and developed an iOS and Android app — and helped establish the channel for how the filter sensor communicates with the phone over BLE. This technical achievement is an enabler for an elegant IoT solution that solves a real consumer problem - improving air quality in the home.

The app’s UX design surfaces the most important information at the right time -- letting you know when you need to replace your filter. It also helps people understand the air quality, offers tips to improve air quality, and makes it easy to order replacement filters in a matter of moments.

ArcTouch's Alexa developers also created a Filtrete skill for Amazon Echo, which provides a conversational interface to frequent questions about your home's air quality and your Filtrete Smart filter.

To learn more about the project, visit our blog post,
“Breathe easy: The 3M Filtrete IoT app and Alexa skill helps home air quality.”

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iPhone Screenshots


Filtrete™ Smart pairs with your Filtrete™ Smart Air Filter and Filtrete™ Smart Air Purifier to help you understand and manage your home’s air quality. It provides useful tips and alerts customized to your home’s environment, and will notify you when it’s time to replace your filters based on air flow and usage – not just time.

With this app, you can
• Pair multiple Smart Air Filters to track their life, and receive filter change notifications based on real usage
• Pair Smart Air Purifiers to manage your indoor air quality – monitor and clean your air while remotely controlling your device by turning power on/off, setting different fan speeds, etc.
• Scan the barcode of your non-smart Air Filters, and set timers to receive filter replacement reminders
• Remember your filter type and size, and easily order replacement filters
• Monitor outdoor air quality in multiple places, and view short and long-term trends
• Receive tips and alerts to improve air quality

Version 2.1.1

Thanks for using the Filtrete™ Smart App! We are constantly reviewing feedback and making changes to improve our app and your experience. This update includes:
• New Activity tab! We’ve made it easier for you to see your most important alerts and the latest tips & tricks all in one spot.
• Now, view your product details directly from your notifications and widgets.
• Performance and stability improvements

Ratings and Reviews

4.8 out of 5

22.8K Ratings

This is now the only filter I will buy from now on

I’ve been using these for almost 18 months now and I love these! I have a 14x30x1 upstairs and downstairs and I thought it was just a countdown timer to change it every 3-4 months, but it’s actually air quality it’s measuring. I don’t have to change the one downstairs near as often the one upstairs! Definitely a nice surprise! Also, with COVID-19 and flu season, it filters out any germs that might get in the air.. When I have been telling friends about these, I tell them it’s like a N95 mask for your House/AC!! Hah, I don’t think that’s accurate.. but I get then point across that it’s far better than any AC filter out there and does trap and kill viruses. The app and air quality feature makes it so easy to know when your filters need changing.. I’ve saved money because I was using the 2400s and I’d change them both every 4 months.. and last time I changed both and I’m at 4 months now with 39% downstairs and 28% upstairs.. that’s great to know and a $$ saver!

Grateful for cleaner air

I’ve been using Filtrete 2500 Smart Air Filters for several months now, one upstairs and two downstairs. I’ve replaced each when the filter life is at 0%, which has been at different times for each filter. I’d rather spend more money now for these filters and the smart filter capabilities than possibly spend more money in the future dealing with health-related problems that could have been prevented by using high quality smart air filters. The app is great and allows me to know exactly when I need to change my filters rather simply guessing or waiting three months to do so. The tips on the app are informative and helpful. The only thing I would suggest for the app is the addition of a history of when each filter is replaced so I and other users can keep track of short and long term usage and replacement. I’ve been amazed at how sooner I’ve needed to replace my filters but am grateful that my family and I are breathing cleaner air!

We're so glad to hear that you're enjoying the benefits of the Smart Air Filters & App. Thank you for the feedback on the app as well. We're always looking for ways to improve the experience!

What happened?

Terrific app. Did what it said it was going to do and then, the unthinkable happened… A few days ago, a major upgrade was pushed out and now, can’t connect to my filter. No matter what I do… nothing. Sad to see one of the few apps that really worked as advertised fall by the wayside. UPDATE: What is specifically happening is after a couple of days, the Filtrete Bluetooth device will disappear from My Devices (Bluetooth) and the only way to get around the issue is to delete the app and reinstall and usually can get a couple of days out of the app using this procedure. Just saw there was a minor update pushed out (2.0.1) so we’ll see if that resolves the issue.
UPDATE 2: After a couple minor updates to the app over the last several days, it’s been very stable and no longer noticing any issues whatsoever so changing the rating from 1 star to 5.

Hi, thank you so much for reaching out. We did notice some bugs with our latest release and have worked quickly to resolve them. Please update your app to version 2.0.2 in the app store and your connection should show as expected. Please reach out to us directly at 1-800-388-3458 if you continue to have issues. Thanks again for your patience!

The developer, 3M Company, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Location
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics
  • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More


3M Company

75.3 MB


Requires iOS 14.0 or later.
iPod touch
Requires iOS 14.0 or later.

English, French

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