Room by Room · reference
Air Purifier for a Nursery: What Size You Need
for a typical nursery
EPA table, 200 sq ft row · 8-ft ceiling
A nursery is sized exactly like a bedroom, because it is one: floor area, published minimum, no interpolation. Between the 100 and 200 sq ft rows the minimum is 130 cfm, and that is the whole calculation.
What changes is the occupant. A baby sleeps low, plays on the floor, and investigates everything with hands first. So the running questions, which setting, where the cord goes, whether the machine can be pulled over, matter as much as the sizing. And no, there is no published rating for 'baby-safe'. That word is marketing.
What the published table gives a nursery#
The published rows run from 65 cfm at 100 sq ft to 390 cfm at 600. A nursery between the 100 and 200 sq ft rows takes the larger: 130 cfm, calculated at an 8-foot ceiling.
Round up rather than down whenever the floor area falls between rows. CADR is a minimum, and a minimum met on a technicality is still met.
Run it low, and size for that#
The advice for nurseries is the advice for bedrooms with the volume turned down: an oversized unit on low beats an undersized one on high. The low setting is the one you will actually live with.
If the unit meets the published minimum on low, you never have to choose between clean air and a quiet room. If it only reaches the minimum on high, you bought the wrong size.
Suggested next step
Compare what the table asks for
Search listings for the published minimum your room needs, then check the smoke CADR on the shortlist before anything else.
Placement with a small child in the room#
Compare a few bedroom-sized units with the nursery in mind: the questions are noise on low, cord management and stability, in that order.
- On the floor, on its base, where a pull on the cord cannot tip it.
- Cord routed behind furniture and out of reach. A dangling cord is an invitation.
- Clearance on every side; not wedged between cot and wall where airflow dies.
- Out of the curtain line and away from blind cords.
The two things the box will not tell you#
Odour claims carry no number. If the box says it removes the nappy-bin smell, note that EPA publishes no CADR for odours at all, there is nothing to compare between brands.
MERV is not a room-size rating either. If the marketing quotes a MERV figure, it is describing a furnace filter, not the reach of this machine.
Questions people actually ask
Sources
- U.S. Environmental Protection Agency, Guide to Air Cleaners in the Home (2nd edition), retrieved 2026-08-30
Quoted and transcribed, never paraphrased into new numbers. This site does not interpolate between published figures.
Suggested next step
One more angle before you decide
The minimum is settled, spend the rest of the decision on noise, filter cost and the smoke CADR.
Get the next sizing brief
One email when a page earns its figure. No deal alerts, this site does not show prices.
Printed from https://roomandfilter.com/rooms/air-purifier-for-a-nursery, “Air Purifier for a Nursery: What Size You Need”. Figures from U.S. Environmental Protection Agency, Guide to Air Cleaners in the Home (2nd edition), retrieved 2026-08-30. No prices are shown on this site, by policy.