Estimate the clean-air delivery rate needed for a room from room volume and a target air-changes-per-hour value.
Result: Enter room dimensions and target ACH.
Formula used
Room volume = length × width × height. Required clean-air flow in m³/h = room volume × target ACH. The calculator also shows an approximate CFM equivalent.
Planning limitation
This is a sizing estimate, not a medical recommendation. Real performance depends on purifier placement, filter condition, leakage, room layout and the manufacturer’s tested CADR.