Free shipping
30-night risk-free trial
2-year warranty
Loved by 2,047+ parents
Your baby sleeps up to 17 hours a day in their room. They deserve the cleanest air in your home.
Indoor air can carry 2 to 5 times more pollutants than outside air. Sereniby makes sure none of that reaches your baby while they sleep.
Pediatric-Grade H13 HEPA + Carbon Filtration
Real-time air-quality sensors + companion app
Patented SafeFlow™ technology
4.9 ★ 200+ verified reviews
Free shipping
30-night risk-free trial
2-year warranty
Free monitoring app
HSA / FSA eligible
Sereniby Nursery Air System
The air purifier your baby deserves
4.9 · 200+ verified reviews
Pediatric-Grade H13 HEPA + Carbon Filtration
Traps particles down to 0.3 microns, including VOCs from new paint and furniture.
Patent-pending SafeFlow™
Pediatrician-recommended airflow that clears CO₂ from your baby's sleep zone.
Smart sensors + companion app
Laser PM2.5 and temperature sensors. More accurate than infrared sensors most purifiers use.
Adaptive night light
Red-spectrum light that supports natural melatonin. Dims fully for complete darkness.
$578
$698
Save $120
Free shipping
30-night trial
2-year warranty
Free app
HSA / FSA eligible
The air purifier your baby deserves
The air purifier your baby deserves. Get clean air >
Loved by 1,047+ parents
$698
$578
The real problem
The nursery looks perfect. The air inside it isn't.
Nursery air is often worst air in your home...
Dirty diapers, fumes from new furniture and paint, closed doors. You designed the space so carefully, but the air still needs work.
You need airflow, but fans stir up more than air.
You've read the research on airflow and safe sleep. Fans help keep air moving, but they also lift dust and allergens into the air your baby breathes.
A purifier helps, but it only does half the job.
It filters the room's air, but it doesn't create the gentle, focused flow of clean air right where your baby sleeps.
The problem was never a lack of products. It's that no single product did all three things: filter the air, circulate it to where your baby breathes, and tell you in real time whether it's working. That's exactly what Sereniby was built to do.
How seriniby works
Filter. Circulate. Sense.
Three things happening at once, all night, automatically. Here's what's actually going on inside your nursery.
01
Filter
Catches what you can't see
Pediatric-grade HEPA and activated carbon capture particles as small as 0.3 microns. The stuff that floats through most rooms isn't floating through your baby's.
02
Circulate
Moves clean air to the crib
Patented SafeFlow™ continuously moves clean, filtered air through your baby's sleep zone. No exposed blades, no cold drafts. Your baby breaths clean air 24/7.
03
Sense
Tells you it's working, in real time
Laser sensors track PM2.5 and temperature in real time. If air quality dips, Sereniby adjusts automatically and alerts you on your phone. You don’t have to second guess your baby's safety.
The evidence
We didn't invent the science. We built Sereniby around it. The findings below come from published research by the American Academy of Pediatrics, Columbia, the New England Journal of Medicine, and Kaiser Permanente.
Babies spend almost all their time breathing indoor air
"Children spend 80% to 90% of their time indoors and therefore are frequently exposed to pollutants in indoor air."
American Academy of Pediatrics
Their developing lungs are especially sensitive to it
"Children's lungs are especially sensitive to the harmful effects of air pollution."
Columbia University Medical Center
Cleaner air is linked to healthier lung growth in children.
"Improvements in air quality were associated with statistically and clinically significant positive effects on lung-function growth in children."
New England Journal of Medicine
Good circulation also lowers the chance of CO₂ building up overnight.
"Keep your baby's sleeping room well ventilated… Good air circulation reduces the chance of carbon dioxide buildup."
Kaiser Permanente
Everything inside
One device. No clutter.
Everything your nursery needs, built into one device that sits quietly beside the crib.
Pediatric-grade HEPA + carbon
Captures 99.97% of airborne particles at 0.3 microns. Activated carbon removes VOCs, odors, and chemical off-gassing.
SafeFlow™ circulation
Patented SafeFlow™ delivers a constant flow of clean air to the crib. Hidden blades, no exposed parts.
Real-time smart sensors
Laser PM2.5 sensors, more accurate than standard infrared. Adjusts automatically when levels shift.
Companion app
Live readings, historical data, and alerts on your phone. Optional. The unit works perfectly without it.
Red-spectrum night light
Pure red light supports natural melatonin production. Dark mode eliminates all light for deeper sleep.
Adaptive night light
Red-spectrum light that supports natural melatonin. Dims fully for complete darkness, then rises gently to welcome the morning.
How it compares
Why not just a purifier? Or just a fan?
Because your baby needs both, plus everything else, in one quiet device that knows when the air needs help.
Pediatric-grade HEPA
Circulates to the sleep surface
Real-time PM2.5 sensors
Companion app + live readings
Red-spectrum night light
No exposed blades, crib-safe
Built for the nursery
A purifier filters from one spot but doesn't circulate. A fan circulates but doesn't filter. Sereniby does both, and it watches the air while it does.
Real parents. Real results.
What parents say after the first week.
4.9 · 2,047+ parents
Wish I had this with my first baby
We really love our Sereniby. We use it in our toddler's room. I did not have an air purifier with my first child. We feel better having her bedroom air purified with all of the winter colds she's exposed to at school and pollutants in the city. Our daughter loves using it as a nightlight. It is very stable and safe for kids who may try to knock it over (like mine). We're all very happy with our Sereniby!
Hanna B.
Verified buyer
Perfect for our family
As a family of physicians, we wanted a straightforward, reliable way to improve the air quality in our daughter's room. Sereniby has been great. We like being able to check the PM2.5 levels anytime, and the alerts give us a heads-up if anything changes. It's exactly what we needed for their space.
Blair
Verified buyer
Peace of mind
Like all parents, we think nonstop about how to make healthy choices for our kids: the right nutrition, limiting screen-time, so many things. Most healthy choices take extra time and effort every day. With Sereniby, it was different. We set it up easily, and now we know we're providing our kids with healthy air without adding more to our plate. It's a huge relief to see something so simple making such a big impact. Highly recommend!
Jess G.
Verified buyer
We can see and feel it working!
This product has truly exceeded our expectations. The difference is noticeable. The air feels fresher, and it's reassuring to know our baby is breathing cleaner air. Setup was simple, and I love how it blends seamlessly into the room. We love the app, but we also appreciate that you don't need it to control the unit, useful for when grandparents babysit. We even got rid of our white-noise machine. Highly recommend!
Lexi
Verified buyer
Risk-free trial
If you're not sure, send it back.
We're confident in what Sereniby does. But you shouldn't have to take our word for it in week one. Try it for 30 nights. If the air doesn't feel cleaner, or it's not the right fit for your nursery, send it back for a full refund. No questions. No restocking fees.
Free shipping
30-night trial
2-year warranty
Free app
HSA / FSA eligible
Common questions
Good questions deserve straight answers.
How quiet is it? Will it wake my baby?
Sereniby runs at 25 dB on its lowest setting, quieter than a whispered conversation. The white-noise feature actually helps most babies sleep through household sounds. It was designed to run all night without disturbing sleep.
How often do I replace the filter?
Every 6 to 8 months, depending on your nursery's air quality. The companion app tracks filter life and tells you when it's time. Replacement filters are available on the website
Do I have to use the app?
No. Sereniby works fully without the app. It still purifies, circulates, and adjusts automatically based on its sensors. The app gives you live readings and history on your phone if you want them. It's optional, not required.
Is it safe right next to the crib?
Yes. The SafeFlow™ design has no exposed fan blades. It also has anti-tip protection and a hidden power cord. It was specifically engineered to sit crib-side, safely.
What's the return policy?
A 30-night trial. Full refund if it's not right for your nursery. No questions, no restocking fees. Contact the team and they'll take care of it.
Can I use HSA or FSA funds?
Yes. Sereniby is eligible for purchase using HSA and FSA funds through Flex, which makes the investment significantly more accessible for many families.
Your nursery. Tonight.
Cleaner air. Better sleep. Real peace of mind.
No separate purifier. No separate fan. No separate sound machine.
One device that watches the air all night, so you don't have to.
Pediatric-grade HEPA + carbon
SafeFlow™ 360° circulation
Real-time sensors
Companion app
Night light + white noise
Free shipping
For only $349
2-year warranty
Free app
HSA / FSA eligible
