A page for every room, not a brochure
Most clinics buy a purifier for a room nobody ever measured. The report replaces the guess with a number you can hold us to.
The room, in numbers
Floor area, ceiling height and volume for each room we measure on site — waiting room, consult rooms, surgery, sterilisation bay, nap room.
The target air-change rate used
The air changes per hour we size that room to, its source and any assumptions stated — a dental surgery is not a reception desk. US CDC guidance treats five or more clean-air changes per hour as a useful target for occupied spaces.
The clean-air delivery required
The CADR in m³/h needed to reach that figure, worked out from your own dimensions.
The unit that meets it
Which AIRE unit, and how many, per room. Where one unit will not reach the number, we say so instead of stretching it.
Time to clear the air
The theoretical time to remove 99% of an airborne contaminant at your current rate versus the recommended one. It assumes well-mixed air and is a ventilation calculation — not a clinical clearance, infection-control or room-turnaround instruction.
Buy or rent, both costed
What the recommended set costs to buy outright, and what it costs on serviced rental with filters, parts, preventive visits and two-way delivery included.
The arithmetic, in the open
Two lines of maths decide whether a purifier is right for a room. We show both, so you can check the report against your own measurements — or against any other brand's proposal.
Sizing
Required CADR (m³/h) = floor area (m²) × ceiling height (m) × target air changes per hour
Public-health guidance since the pandemic, including the US CDC, recommends targeting at least 5 air changes per hour of clean air in occupied spaces. Every figure comes from our own measurement on the day, not a floor plan.
Clearance time
Time to clear 99% of an airborne contaminant (minutes) = 276 ÷ air changes per hour
Airborne contaminant decays exponentially once a room is being turned over. The figure below assumes a well-mixed room and counts the purifier's clean-air delivery towards the air-change rate.
| Air changes per hour | Time to clear 99% | What that means in practice |
|---|---|---|
| 2 | 138 minutes | Common in a closed, air-conditioned room with no dedicated clean-air supply |
| 5 | 55 minutes | The CDC's stated minimum for occupied spaces |
| 6 | 46 minutes | Frequently used for treatment and procedure rooms |
| 10 | 28 minutes | Turnover between aerosol-generating appointments |
| 15 | 18 minutes | High-turnover surgery |
These are clearance times for a room, not claims about infection. See how we verify our claims.
Sized right, or we fix it
If a unit we specify does not reach the air-change figure your report gives for that room, we upgrade it or add a unit at no extra cost.
The risk in buying an air purifier was never that the machine is bad. It is that you buy the wrong size for the room and have no way of knowing. That risk is ours now, in writing, because we are the ones doing the arithmetic. The guarantee applies at the operating speed, placement and room conditions stated in your report.
The limits, stated
- It does not promise fewer infections, fewer sick days or any health outcome. No purifier does, and we will never say ours does.
- CADR figures for every unit we quote, ours included, are manufacturer-rated. No brand in this market publishes an independent CADR certificate.
- Clearance times assume a well-mixed room. A partitioned or heavily obstructed room performs worse, and the report says where that applies.
- It is a sizing document, not an inspection or a certification, and it does not replace your own infection-control policy.
Book your visit
Two rooms or more. S$150 per visit. You will have the report by email within two working days of the visit.
- We reply by email — no cold calls.
- We measure every room on site — no floor-plan guesses.
- S$150 per visit. No obligation to buy or rent anything.
Assessing a single room? The air purifier size calculator runs the same arithmetic instantly.
About the Air Report
How much does it cost?
S$150 per site visit. We ask for two or more rooms so the visit is worth making. For one room, the size calculator gives you the same arithmetic instantly.
Do you need to visit?
Yes. We measure each room on site, then email the report within two working days of the visit.
How many air changes should a clinic run at?
Public-health guidance since the pandemic, including the US CDC, recommends at least 5 air changes per hour of clean air in occupied spaces. Aerosol-generating rooms are commonly run higher. Your report states the figure used for each room and why.
Does it promise fewer infections?
No. It is ventilation arithmetic — how much clean air a room needs and what delivers it. No air purifier prevents infection or illness, and we will never say ours does.