Let’s be real—clean air matters, especially when you’re dealing with allergies, pet dander, or just tired of waking up with a stuffy nose. That’s where the Levoit Core 400S Smart True HEPA Air Purifier comes in. I’ve been using it for a bit now, and here’s the quick lowdown (no boring tech-speak, promise).
What Makes It Worth It?
Powerful but Quiet
This thing moves air. It’s designed for medium to large rooms (up to 403 sq ft), so whether it’s your bedroom, living room, or even a small studio apartment, it’s got you covered. The best part? Even on higher settings, it’s quiet enough to sleep through.
Smart Controls = No Effort
You can control everything from your phone using the VeSync app, and yes, it works with Alexa and Google Assistant. So, if you’re feeling lazy, just say “turn on the air purifier” from bed and done.
HEPA Filtration That Actually Works
We're talking real 3-stage filtration here:
Pre-filter catches dust and pet hair.
True HEPA filter traps 99.97% of allergens (think pollen, mold, and tiny particles you don’t want to breathe in).
Activated carbon filter clears out odors—goodbye lingering food smells and pet funk.
You literally start breathing easier in a few minutes.
Auto Mode That Thinks for You
It adjusts the fan speed based on your room’s air quality. You don’t need to constantly mess with settings. It just works in the background, quietly doing its thing.
Real Talk: Why I Like It

I didn’t think I needed an air purifier until I got one. Now I’m not going back. The Levoit Core 400S is clean, modern, and doesn’t look ugly in a room. It’s super low maintenance, too—just swap the filter every 6–12 months, and you’re golden.
It’s not just a “nice-to-have.” If you deal with allergies, have pets, live in a city, or just care about what you're breathing in, this thing’s 100% worth it.