BreatheSmart 45i & FLEX HEPA Filter

$89
BreatheSmart 45i & FLEX HEPA Filter
$89.00
$89.00

BreatheSmart 45i & FLEX HEPA Filter

$89.00
  • Alen BreatheSmart 45i HEPA Filter | Advanced (Fresh)
  • Alen BreatheSmart 45i HEPA Filter | Essential (Pure)
  • Alen BreatheSmart 45i HEPA Filter | Ultimate (Odor)
  • Alen BreatheSmart 45i HEPA Filter | All
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Essential (Pure)
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Essential (Pure)
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Essential (Pure)
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Advanced (Fresh)
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Advanced (Fresh)
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Advanced (Fresh)
  • Alen BreatheSmart 45i HEPA Filter | Ultimate (Odor)
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Ultimate (Odor)
  • Alen BreatheSmart 45i & FLEX HEPA Filter | Ultimate (Odor)
  • Alen BreatheSmart 45i HEPA Filter | Essential (Pure)
  • Alen BreatheSmart 45i HEPA Filter | Advanced (Fresh)
1 13

BreatheSmart 45i & FLEX HEPA Filter

BreatheSmart 45i & FLEX HEPA Filter

$89.00
$89.00
Sale Sold out HSA|FSA Eligible ? *One-time purchase only

Choose the filtration that fits your lifestyle:

Filter

Help me choose

Our mid-level filter. Starts with a medical-grade HEPA filter and adds targeted filtration for asthma triggers, chemicals and VOCs, smoke, and other common pollutants. (Formerly B7 Fresh)

2 - Filter Subscription

How subscriptions work? How subscriptions work
Filters are automatically delivered on your schedule. No obligation, modify or cancel your subscription anytime.

$80.10 $89.00

Save 10%

Next payment on:

03-08-2027

Delivery every:

Purifier includes filter rated for:

6-12 months

An Alen filter gives you the power to capture the toughest particles in your air. How? Our filters are made with medical-grade HEPA material that works in tandem with our incredibly powerful air purifiers to capture pesky particles for a deeper, more thorough clean. With four filter options to choose from, you can optimize your Alen ® for your specific environment.
View full details

Meet our filters

Essential (Pure)

Advanced (Fresh)

Ultimate (Odor)

The filter that started it all. Our entry-level filter features medical-grade HEPA filtration that captures 99.9% of airborne dust, viruses, and allergens.​

For when you want a little more control. Includes medical-grade high efficiency particulate (HEPA) filtration from the Essential filter, plus a carbon layer providing protection against asthma triggers, chemicals and VOCs, smoke, and other common pollutants. ​

Your comprehensive clean-air solution. Our top-tier filter features a medical-grade, high efficiency particulate (HEPA) material with a powerful carbon & catalyst layer for broad performance against asthma triggers, chemicals and VOCs, smoke, pollutants, odor, mold, and pet-filled homes. 

Essential (Pure)

The filter that started it all. Our entry-level filter features medical-grade HEPA filtration that captures 99.9% of airborne dust, viruses, and allergens.​

Advanced (Fresh)

For when you want a little more control. Includes medical-grade high efficiency particulate (HEPA) filtration from the Essential filter, plus a carbon layer providing protection against asthma triggers, chemicals and VOCs, smoke, and other common pollutants. ​

Ultimate (Odor)

Your comprehensive clean-air solution. Our top-tier filter features a medical-grade, high efficiency particulate (HEPA) material with a powerful carbon & catalyst layer for broad performance against asthma triggers, chemicals and VOCs, smoke, pollutants, odor, mold, and pet-filled homes. 

See also

Overall rating: 4.8246207 / 5 from 1186 reviews.

AI Generated Review Summary

The BreatheSmart 45i & FLEX HEPA Filter by Alen is highly regarded for its powerful air purification capabilities, sleek design, and excellent customer service. Customers appreciate the noticeable improvement in air quality and the high quality of the filters. The fast and prompt shipping adds to the overall positive experience.

Summary topics

  • Purifier Effectiveness: 5%
  • Unit Design: 5%
  • Air Quality Improvement: 22%
  • Service Quality: 6%
  • Filter Quality: 8%

Review topics: ["size","instructions","fit","smell","installation","replacement","support","problem","feel","quality","results","price","looks","shipping","customer service","setting","design","value","packaging","works","warranty","air","improvement","website","performance","speed","staff","service","upgrade","sound"].

Review highlights

  • "Top quality, flawless ordering and delivery, clean air; what's not to like?" — Steve C.
  • "I love the air purifiers that I have purchased from Alen Air and the replacement filter arrived very quickly." — Karina
  • "Great product and customer service." — Kenneth H.

Reviews

Bring back previous pre-filter design!

"The previous design with a removable pre-filter was great at trapping large dust particles which significantly extends the life of the main filter. The new thin screen pre-filter doesn't trap dust particles, it only traps bigger items like pet hair. See below for pictures after 2-3 weeks of old pre-filter vs new pre-filter. I expect more stages of filtering, not less in a premium air filter. Seems like a tactic to sell more filters. You can do better Alen."

— PM (1/5)

Breathing comfortably

"Im loving this wonderful product Alen Breathe Smart Hepa Air purifier. . I sleep so good at night and if my RV gets warm from not running my air conditioner this unit is remarkable at cooling off my space with kitty. . I highly recommend…I have the subscription to get another filter, its here, this unit is very quiet."

— Regina (5/5)

"This air filter does tbe trick. I live in a mountain region where woodstoves and prescribed burns happen almost daily. The machine and filter in my bedroom helps me sleep. I swap out the filter every 6 months, but if you don't live in smokey conditions, the filter might last much longer. Worth it for clean air."

— Tamara (5/5)

"I use the filter for smoke and pets in my 45i but the notification still says I have poor air qualiry in the living room. Almost every day (now that its getting warmer) I open several windows in the house for a cross breeze. Other than getting my husband to smoke outside (which itn’t going to happen) is there anything else I can do? Once a week I open the unit and vacuum the accumulated dog hair. Thank you"

— Wendy (5/5)

"it came. i installed it. now we wait to see how long it lasts."

— Chef (4/5)

Great filters!

"Great product at a great price! Other filters I've had in the past cost twice as much and last half as long!"

— Jason (5/5)

"Auto-subscription right on time. Great filters!"

— William (5/5)

"I use this filter for 1 of my 2 Alen Air Purifiers. Good enough to keep a filter subscription with automatic shipping."

— Mary (5/5)

velcro strips missing.

"The new filter doesn't have the Velcro strips around the rim as the old one does. These strips hold the black filter against the new filter. It just seems that they would be the same?"

— Judy R. (4/5)

"Alen is a great store with top notch air cleaners. Their filters work great."

— Susan (5/5)

Q&A

Will this filter also fit in Breathsmart Flex unit? I purchased this filter w carbon and put it in my new Flex unit- Seemed to fit just fine-
Yes. The BreatheSmart 45i and BreatheSmart FLEX share the same filters.
How often should you change the filter
The BreatheSmart 45i filters last anywhere from 9 to 12 months.
I just purchased the Alen BreatheSmart 45i at a big box store. Which filter type comes in the box with the unit?
If you purchased your 45i air purifier from Lowes, then you would have purchased either the 45i Pure (B4-Pure) or Fresh (B4-Fresh) filter. The filter type is labeled on the side of the filter.
Why can't I get a subscription to filters?
For more information about Filter Subscriptions, please visit our website at https://alen.com/pages/subscription. If you are having trouble enrolling into a Filter Subscription, please contact us directly, and one of our Customer Experience Advisors would be happy to help! Please use the link provided below to contact us via phone, email, or chat. https://support.alen.com/hc/en-us/requests/new
how do I use pre filter
All of our filters come with a Prefilter attached. On the BreatheSmart 45i filters, the prefilter is the black-mesh attachment with Velcro on the front of the filter. The prefilters' job is to catch the larger dust and debris from clogging your main filter. We recommend vacuuming the prefilter regularly, about once a month, to keep your filter and purifier running optimally. However, some customers (especially those with a lot of furry pets) prefer to replace the prefilter instead. For more information about prefilters and maintenance, please see the link below and scroll down. https://alen.com/pages/alenprefilters

Shop by Concern