Alen Air Purifier BreatheSmart 45i HEPA with Pure Filter for Large Rooms up to 1600 Sq. Ft. - Perfect for Bedrooms - Captures Allergens, Dust, & Mold

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.

Outstanding! Cleans the air quickly and efficiently. I have serious allergy issues and this system really keeps the air clean. It tells you by color if the air quality is questionable with 5 color codes. Also removes cooking odors. It was well worth the money.

We just received it today and it was easy to put together and I loved the child safety plastic, since I have a small grandson. When it's in low it is very quiet, the higher you put it, the noise is more audible, but nothing scary. As a matter of fact, my grandson sleeps with a sound machine, so I'm thinking of setting on one of the higher levels because I didn't bring his noise machine. If there are any issues, I'll follow up later. As of today, everything looks great.

I try not to write reviews until some time has passed and it’s been about 8 months since we purchased this and couldn’t be more happy.Initial Impression:The presentation was great with a creative front opening box which made it easy to pull out and no fuss of wedging it through the top like any large item. We got it all set up and set it to auto and took it for it’s first spin! It started off like any air purifier running a mod speed until it stated to room was clean... here is the fun part, our toddler had a smelly surprise for us! The moment I opened her diaper (20 feet away) this baby turned red and kicked into high gear. We were overly impressed! This thing was a fart snitch since day one lol. It always kicks on when we cook or the smog is bad (we live in LA) which is pretty often. It’s just nice to know we are breathing cleaner air inside.*Side note, we have a medically fragile child who has had a few heart surgeries and experienced a collapse lung so also has respiratory issues. She was noticeably better when we purchase this device.Warranty and a customer service:We recently had the sensor reading red aka dirty for a couple weeks straight. It was odd because we loved to San Diego which has much cleaner air and tested this in small isolated rooms showing the same issue. Upon contacting support they confirmed that some of the 45i units had an issue with a dirty sensor and would send a cleaning kit free of charge. We received the lot within a few days but it was still having the same issues. What did they do??? They offered us a free upgrade to a 75i!!! WHAT? This was by far the best warranty (at no additional cost) I’ve ever seen. The new unit arrived within a few days and here we are happy as can be with a fast/stronger device cleaning our home.Conclusion:I’m so happy with this purchase that I made this loooong review just to make sure any potential buyer knows it’s worth! Our medically fragile toddler sleeps so much better with this in our home and the same goes for my allergies. Definitely worth spending the extra money!

Smoke is blanketing our region of northern California from surrounding wildfires right now, and we ordered the Alen 45i with a plan to use it in the bedroom. The day it arrived was particularly bad, with smoke infiltrating our condo to the point that air quality was hazardous. In desperation we set it up in the middle of the condo, hoping for a slight improvement at best given that it's rated for a maximum of 800 square feet and we were challenging it to deal with about 1000 square feet on two levels. Much to our surprise within a few hours the smoke smell was gone! I happen to own an air quality detector, and while the air outside was at 45 ppm of smoke particles, inside the air measured 4. This unit is pricey compared to others, but the extensive automated controls, ease of use, effectiveness and lifetime warranty make it well worth the investment.CORRECTION: The warranty is for one year without registration, 5 years if registered and lifetime only with a filter subscription.

Fairly quiet at first two settings. Pretty noisy on last to settings. Be careful when ordering there are 4 different types of filter options. Nice looking unit and easy controls. Nicely lit control panel that can be turned off at night. Will add minimal heat to the room. Not a small unit so measure where you're want place it. Filters aren't exactly cheap but supposedly will last up to a year in a normal environment. All in all it seems to provide clean air to the room. I would definitely buy another one.