Hospital AHU Airflow Sizing Estimator

Estimate the supply airflow an air handling unit needs to hold the HTM 03-01 air change rate for a given room.

Room type (sets air change rate)

Room dimensions (metres)

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Required supply airflow (m³/h)

Room volume

Air change rate

Airflow (L/s)

Suggested series: KAZK (DX) with KAFLW outdoor condensing, for single-suite or refurbishment duty.

Suggested series: KAZK (chilled water) for central-plant duty; add KAZT for reheat where RH ±2% control is required.

Airflow exceeds a single standard unit — a multi-unit or bespoke configuration is recommended. Contact Koven Air engineering.

Get a sized quotation from Koven Air →

Indicative estimate: airflow = room volume × air changes per hour. Real selection also accounts for fresh-air fraction, thermal load, pressure regime and diversity — request a full calculation. Koven Air range: 1,500–200,000 m³/h.

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