- HEPA Pure Filter: Eliminates 99.9% of allergens and pollutants as small as 0.1 micron so you can breathe easy. Ideal for allergy, asthma, and virus concerns.
- Proven by SleepScore Labs to enhance sleep according to a peer study. Its ultra-quiet operation emits pink noise, optimizing lower octave frequencies, and ensuring a restful night.
- The BreatheSmart 45i quietly and efficiently circulates air up to 1600 sq. ft. every hour. Perfect for large bedrooms, living rooms, and dining rooms ensuring clean, fresh air throughout your space.
- Alen air purifiers offer superior performance through the combination of a powerful fan, quiet motor, and advanced filtration. Medical-grade filters capture particles as small as 0.1 micron.
- SmartSensor technology adjusts fan speed based on air quality, with color-coded feedback. Monitor air purity easily with this home essential.
10 reviews for Alen Air Purifier BreatheSmart 45i HEPA with Pure Filter for Large Rooms up to 1600 Sq. Ft. – Perfect for Bedrooms – Captures Allergens, Dust, & Mold
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DIANN –
Based on a favorable review in Consumer Reports I purchased a Blueair 211+. I have returned that unit, and replaced it with an Alen Breathesmart 45i, so this review will be a comparison of the two. Both are approved by the state of California as not producing harmful levels of ozone, sometimes a side-effect of ion generation. Both units have ion generation, but on the Alen you can turn it on or off. I found the Blueair caused increasing eye irritation over several days, which I have not experienced with the Alen ion generator turned off.
While the Alen is a bit more expensive (depending on the confusing filter choices on the Blueair), it also has a greater square footage capability. If you like the Alen features, you can get most of them at a lower cost in the Breathesmart Flex.
Here is what I prefer in the Alen 45i. As mentioned, you can turn the ion generator on or off. It has a five color indicator for real time air particulate level, which I have seen change when I clean up a dusty room or empty a document shredder into a waste container. You can set the fan speed to auto, which will change the speed based on the detected air quality. It has a TrueHEPA filter rated at H13. This compares to the HEPAsilent terminology of the Blueair, which you can find criticism of online and which I noticed you can see through when I returned the unit. The Alen has multiple, easy to use lighted controls, and you can turn the light level up, down or off.
If this review sounds like a am an Alen salesman, I am not — just a retired consumer with no involvement ever in the industry. As to the Consumer Reports ratings, the Blueair is recommended as is the Alen Breathesmart Classic (which is larger and older than the Alen 45i). They did not test the newer Alen 45i. In real world use, I find a slam dunk favorite in the Alen Breathesmart 45i compared to the Blueair 211+, both in results and its’ much greater user friendliness and flexibility to control.
strongarm18 –
What started as browsing for an inexpensive air purifier became a $2000 investment in health. Years ago I took efforts to make sure my water was double filtered coming from our well. To this day our water is the best I have ever tasted. Even my wife noticed the quality difference and she is usually oblivious to such things. Everything started a little over six weeks ago. When I finally decided an air purifier was in our best interest I researched every make and model possible, as I’m sure many of you do. Alen had a few bad reviews, but their specs and design grabbed my attention. Their filters are exceptional and longer lasting. The machines are very energy efficient. My 75i never goes over 20watts. Haven’t tested the 45i yet, but assume it is close. No point in running a machine 24/7 if you are worried about your electric bill the whole time. Alen can be controlled remotely using the GoSund app and it gives you the pm2.5 count as well. Up to this point other reviews have all mentioned what I have said so far.
I studied cadr rates and air change intervals ad nauseam. The thing I learned is that the square footage claims by all manufacturers are exaggerated if you truly want allergy free air or close to it. A cadr of 247 might effectively filter up to 375sq ft not 800 ft. That is figuring closer to 5 air changes vs 2 per hour. Again all manufacturers do this. I’m running two 75i’s and one 45i in an area of 1400ft with high ceilings. Is my air cleaner than it ever has been? You bet. One would of helped for sure, but the three working together purify the air a little quicker and much more often. It still takes an hour or two to get air quality at good levels after cooking. No exhaust fan present in our house. I got Covid a month ago today and I honestly believe the quality of my air made an incredible difference. The H13 hepa filters most likely reduced the amount of the virus in the air along with a hepa vacuum. I know most people can not afford more than one of these. For bigger spaces a 75i is where you need to be looking. If sleeping problems are more of an issue than the 45i is perfect for bedrooms. It is where I have mine.
Alen reminds me of Apple. I resisted Apple for years. Telling myself they were overpriced and overhyped. I’m writing this review on an iPad so what does that tell you? Once you are on their ecosystem everything else looks inferior. Same thing with Alen. When I was shopping for my third purifier on Black Friday I was only looking at Alen. They make you feel good about their products, service, warranty, and overall quality. We all need to feel good a little this year and not like you can go on vacation. Alen is an American company, so at least some of the benefit stays here. Look if you have read this far you most likely have an interest in this product. Try one. A 75i if you can swing it financially or a 45i if you have a smaller space or Christmas spending has got out of hand already. You will never know what you did without one. Oh and if you buy a second or third I’m betting it is an Alen.
Jeremy Modjeska –
It was summer in Seattle and the blooming things were exploding with delight, unleashing a blanket of pollen on the city and providing job security for the makers of Sudafed. I’d grown weary of sneezing myself to sleep at night and of constantly vacuuming up dust. It was the summer I turned to air purification for my salvation.
I bought the Alen 45i on the recommendation of Consumer Reports. After a few initial hours on turbo, it settled into a quiet cycle on auto mode and I haven’t had to touch it since. Pretty quickly, my dust level was significantly diminished and I was sleeping better. I found that when I walked downstairs in the morning I would immediately start sneezing, so I ended up purchasing the larger 75i for my living room (probably overkill for my space; it’s a gigantic beast). Both units are extremely quiet unless they’re on turbo — but they call it turbo for a reason — and they’re super-easy to setup and use. They also look nice, and I like that you can turn off the display light on the 45i so it doesn’t cast unnecessary light in the bedroom at night.
So far so good on the filter, though I haven’t had it long enough to say whether it’s as long-lasting as claimed. Assuming it continues to perform I think it’s worth the investment for cleaner air and better sleep.
Tonyzee –
Habe das Gerät seit einem Tag im Betrieb und bin bisher begeistert. Der Alen BreatheSmart 45i macht einen sehr wertigen und robusten Eindruck, ähnlich wie ein Gerät aus der Medizintechnik. Der Luftdurchsatz durch den Filter ist bereits in der kleinsten Betriebsstufe, in der der Ventilator kaum zu hören ist, enorm hoch. Es ist ein sehr gut durchdachtes Gerät, die Inbetriebnahme und Bedienung sind einfach und intuitiv. Der Filter gab bei Inbetriebnahme keinen Geruch ab.
Mir wurde zunächst irrtümlicherweise ein Gerät ausgeliefert, das für den Markt im UK bestimmt war und daher nicht den passenden Netzstecker für deutsche Schuko-Dosen hatte. Das Problem wurde sehr professionell, schnell und umstandslos von Alen International zu meiner vollkommenen Zufriedenheit gelöst.
Jim Johnson –
I followed consumer report’s recommendation and went with the alen breathsmart machine. I have used it for 3 days and so far I am loving it!
I have dust allergies and this does the trick. I sleep well and I dont have as bad of a plugged nose in the morning as before.
The machine is simple to operate
The machine has a vacuum-able pre-filter
The machine has a life time warranty as long as you subscribe to the Alen filter replacement program within a year of purchase which is a BIG DEAL.
The machine’s HEPA filter lasts 12 months.
The machine is very quiet in the lowest settle and sounds like a white noise machine on the second lowest setting.
The machine is very light. I move it from room to room all the time
The machine is good for 800 sq ft of space
The machine is very nice to look at!
One con is the manual sucks. Sometimes my machine has this wifi looking symbol on and I dont know what it does. The machine becomes possessed and starts cycling through fan speed and turns off on its own. It only happened once and I dont know whats going on.
Jackie –
This is the 3rd unit I bought. It’s so sleek and it compliments your furnitures.
Franz JC –
Purchased two 45i units, on sale for $325.00 each, plus two B4-Fresh replacement filters for $93.00 each. Shipping was quick at 2 days, Only been using for a day, but very pleased so far with ease of operation, low noise even on the Turbo speed and the size. Also appreciate the long 6′ + power cord. I registered both units for extended warranty on Alen’s website, and got confirmation by email, but disappointed that the advertized “Forever Guarantee” doesn’t seem to be available in Canada, nor can you even order accessories, or replacement filters directly from Alen for delivery in Canada. Still unsure and confused on whether registering the products extends the warranty from 1 year to 5 years, as per Alen’s website, as website wouldn’t allow for a Canadian address. Alen’s Customer Service stated that they hope that delivery service and Forever Guarantee will be available in Canada soon.
W. H. –
Das Gerät ist sauber verarbeitet, arbeitet recht leise und ist einfach bedienbar.
Viel Plastik, sitzt aber trotzdem alles gut und wackelt nicht.
Der Filter lässt sich gut tauschen und wirkt robust.
Weitere Punkte zeigen sich vermutlich in den nächsten Monaten, bisher ein sehr guter Eindruck.
Mir wurde zuerst das falsche Gerät zugesendet. Nach einer Rücksprache mit Alen UK (Verkäufer) haben die super reagiert, sich gut gekümmert und auch nachgefragt ob alles in Ordnung ist. Habe ich so noch nicht erlebt, dafür auch volle Punktzahl.
Jeremy Modjeska –
I’ve had this air filter for about three years now in my master bedroom and it has done well. Dust collection on flat surfaces, compared to rest of house is drastically down as you can see in the pre filter picture. It is quiet when normal running and kicks up when particulates enter the air from cleaning to cooking. Absolutely would buy again.
Filter picture is 10 months in system. Changed when filter status went yellow.
strongarm18 –
I love this wall. It’s nice. It’s quiet. You can put it up against the wall. It does the job well.