What size room does the BreatheSmart 45i handle?

Alen rates it for rooms up to about 800 square feet, which covers most bedrooms and open living areas. Larger open floors may need a second unit.

How often do I replace the filter?

Alen recommends a new filter roughly every 9 to 12 months, depending on use and filter type. The unit's indicator reminds you when it is due.

No. The 45i has manual speeds and a timer through the app, but no onboard particle sensor or automatic speed adjustment.

Yes. The 45i connects over Wi-Fi and works with the Alen app, Amazon Alexa and Google Assistant.

That is the top of its recent range; the 45i has sold for less during sales. If you are not in a hurry, watch for a discount.

The purifier, one HEPA filter and a power cord. No extra filters or remote are included.

At ALEN, for $518.00, as of our latest check.

$518.00at ALENObserved at 10:42 PM

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