Just installed these HSIAMEN filters in my Blueair 270E and wow, what a difference! The air feels noticeably cleaner already. Super easy to pop in—no weird gaps or fitting issues.

Love that these are way more affordable than OEM filters. I’ve been using Blueair purifiers for years, and the brand-name replacements hurt my wallet. These do the job just as well for half the price. *chef’s kiss*

Pro tip: The packaging says 6-12 months, but if you have pets (hi, three shedding cats here), lean toward 6 months. Mine started losing efficiency around month 7. Still, two filters in a pack means I’m set for a year!

Only gripe? Wish they came with a little reminder sticker for replacement dates. But hey, that’s what phone calendars are for. Definitely repurchasing!