The job this air purifier handles
- Quick answer: a compact smart purifier for one small room, with HEPASilent particle capture and app control, at $99.98.
- Blueair rates it to clear 248 sq ft within 12.5 minutes, or the equivalent of 1,190 sq ft per hour, so size it to a single room rather than a whole home.
This Blueair pushes air through HEPASilent filtration rated to catch 99.97% of airborne particles down to 0.1 microns. That covers the everyday stuff you notice in a small room: dust, pollen, pet dander, smoke and mold spores.
The figures to plan around are 248 sq ft of cleaned air in 12.5 minutes, or a full 1,190 sq ft of turnover every hour. Read that as room turnover, not coverage of an entire open floor plan. A bedroom, nursery, dorm room or apartment living area fits the first figure comfortably.
We'd consider this a strong pick for a Knicks fan who wants smart controls in a compact body. The Blueair app handles fan speed and schedules, and Auto Mode adjusts output as indoor conditions change, so you aren't babysitting a dial.
What $99.98 gets you
At $99.98 you're paying $73.95 less than the typical price over the last 90 days, a 43% difference. If you've been waiting for a reason to move on this model, the gap is the reason.
This is also its lowest price on record, so the current figure beats anything it has sold for before. That context matters more than a percentage on a badge, because the comparison is to what this unit actually tends to cost.
| Offer detail | Recorded value |
|---|---|
| Amazon price | $99.98 |
| Customer rating | 4.4 |
| Customer reviews | 5242 |
| Typical price over 90 days | $173.93 |
| Difference | $73.95 (43 percent) |
Filter care and running questions
Every purifier of this type depends on its filter, and this one is no exception. The listing doesn't state what a replacement costs or how often you'd need one, so check the Blueair app or the product page for the SP1i filter price and the recommended change interval before you commit.
Two other practical checks: confirm the filter model number matches this exact unit, and decide where it will sit. A compact purifier needs a spot with room for air to move through it, not a tight shelf against a wall.
The app is central to the experience here. If you'd rather not set up an account or keep a phone-based schedule, a manual purifier may suit you better at a similar price.
When this is the wrong fit
We'd skip it if you need to clean a large open living space in one pass. The hourly figure is a turnover rate, so a big room with connected hallways will want more airflow than one small purifier provides.
Also pass if you want a purifier that runs entirely without a phone. Auto Mode and scheduling both route through the Blueair app, so a household that prefers physical buttons and no connected account should look at a simpler model.
Check the filter replacement cost and the recommended interval before you buy if long-term spend matters to you.
Product details
| Model | 689122004716 |
|---|---|
| Color | Blue/ Dark Blue |
| Size | Small |



