- Is a 100 CFM purifier enough for 770 square feet?
- Roughly, no. A 100 CFM CADR typically clears a room of that size only with several air changes taking much longer than the usual 4.8 air changes per hour standard. Expect it to work best in a single bedroom or office of 150 to 300 square feet.
- How often do I replace the filter?
- The filter is not permanent, so it needs replacing. Most makers of this class recommend a new HEPA filter every 6 to 12 months depending on use and dust levels.
- Does it work with Alexa?
- Yes. It supports Amazon Alexa and also ships with a remote and app control, so you can adjust speed and modes by voice or phone.
- How loud is it?
- The range is 24 to 48 decibels. The low end is near-silent, and sleep mode keeps it there; the top speed is noticeable but normal for a small purifier.
- Is $74.99 a good price?
- It is the best new price among 7 stores as of November 7, 2026, at Lowe's. For a HEPA unit with app control, that is a low entry price; check filter costs before buying.
- Does it produce ozone?
- No. It lists no ozone generation and no ionic filtration, so it relies on the HEPA filter and odor absorption alone.
- Where is the HEPA Air Purifier Up To 770 Sqft cheapest?
- At Lowe's, for $74.99, 17% under what the other stores charge, as of our latest check.
- Where can I buy the HEPA Air Purifier Up To 770 Sqft?
- 9 stores we checked sell it, including Lowe's, Best Buy, Target, Nordstrom, ModeSens.