Sizing the Nursery, Play Area and Nap Room in an Infant Care Centre
A single figure rarely fits an infant care centre's nursery, play area and nap room. See how to size each space with the CADR formula.
Key takeaways
- A single coverage figure for the whole centre usually over- or under-serves at least one room.
- Apply the CADR formula, floor area times ceiling height times target ACH, to each room separately.
- No distinct ACH figure is published for infant rooms; treat them at least like the office-level 4 to 5 range.
- Sizing room by room avoids overspending on coverage a smaller room doesn't need.
- A survey confirms floor area, ceiling height and layout before committing to a multi-room order.
Why One Figure for the Whole Centre Rarely Works
An infant care centre typically has several distinct spaces under one roof: a nursery for the youngest infants, a play area with more floor space and movement, and a separate nap room used at fixed points in the day. Each has its own dimensions, ceiling height and occupancy pattern, and often a different level of activity and airflow around it.
Pricing or sizing the centre as one blended figure, taking the total floor area and dividing it evenly, tends to either under-serve the largest room or over-specify the smallest one. Treating every room as if it matched the average of the centre's total floor area is convenient for a quick quote, but it isn't how the CADR formula was designed to be applied.
Applying the CADR Formula to Each Room Type
Required CADR, in cubic metres per hour, equals floor area in square metres multiplied by ceiling height in metres, multiplied by a target air changes per hour figure. Run this calculation separately for the nursery, the play area and the nap room, since each is likely to return a different result even within the same centre.
A smaller nap room may size comfortably to a compact model such as the Fillo Plus, which covers up to 30 square metres, while a larger play area could sit in the Classic 400S band of 31 to 54 square metres. Use the air purifier size calculator to check each room's own numbers rather than assuming one model fits all three spaces because they're all under one roof.
Where a centre has an unusually high ceiling in one room, perhaps a converted commercial unit, that single factor can shift the calculated CADR meaningfully even if the floor area matches another, more standard room elsewhere in the centre.
Recommended ACH for Infant Rooms Versus Play Areas
Published guidance sets homes at 3 to 4 air changes per hour and offices, the bracket most institutional rooms fall into, at 4 to 5. There isn't a separate published figure specifically distinguishing an infant nursery from a play area or nap room.
The reasonable starting point is to size every room in an infant care centre at least to the office-level range, then confirm the exact target for each specific room, since ceiling height and layout can shift the calculation, during a survey rather than assuming a stricter figure that isn't documented. A centre that wants a higher target for the nursery specifically can ask for that during the survey, but it should be a deliberate decision rather than a default.
Avoiding Overspending on More Coverage Than Needed
Sizing room by room also protects against the opposite mistake: buying the largest model available for every room because it seems like the safest choice regardless of cost. A nap room that comfortably meets its target ACH with a compact unit doesn't need the coverage built for a much larger play area, and paying for that extra coverage across several rooms adds up quickly for a centre operating on tight margins.
Matching each room to the model whose coverage band fits its own calculated CADR keeps the centre's total spend proportional to what each space actually requires, rather than uniform across rooms that don't actually need the same thing.
This discipline matters even more in a centre with several rooms of different sizes, since overspending on three or four oversized units adds up to a meaningful sum compared with a single household purchase where the difference is smaller.
Getting a Room-by-Room Survey to Confirm the Numbers
Floor plans and ceiling heights on paper don't always match what's on site, especially in centres that have been renovated or partitioned since they were first fitted out. A room-by-room survey confirms the real figures for the nursery, play area and nap room in one visit, rather than relying on measurements taken years earlier for a different purpose.
That gives the centre a single, comparable basis for reviewing rental or purchase options across every room rather than negotiating each space separately with different assumptions behind each quote.
Booking the survey once, rather than room by room over several visits, also means the centre gets one consistent recommendation instead of several quotes calculated on slightly different assumptions.
Next step
Room-by-room sizing keeps an infant care centre's air purifier spend matched to what each space actually needs. Use the air purifier size calculator for an initial estimate, then request a free room-by-room Air Report to confirm the figures on site.
Frequently asked
Why does an infant care centre need room-by-room sizing rather than one figure?
The nursery, play area and nap room in a typical infant care centre differ in floor area, ceiling height and occupancy, so a single blended figure tends to under-serve the largest room or over-specify the smallest. Applying the CADR formula separately to each room gives a more accurate result for every space.
Does the nap room need a different ACH from the play area?
There isn't a separately published air changes per hour figure distinguishing a nap room from a play area. Both can reasonably start from the office-level 4 to 5 range that applies to most institutional rooms, with the exact target for each confirmed during a survey.
How does a survey help avoid overspending on coverage?
A survey confirms the actual floor area and ceiling height of each room, which can differ from what's on an old floor plan after renovations or partitioning. That lets each room be matched to a model whose coverage band fits its real size, rather than defaulting to the largest unit for every space.
Related reading
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