Ventilation Calculator | Airflow & Damp Prevention Tool

ACH: Air changes per hour
m³/h: Cubic metres per hour
l/s: Litres per second
CFM: Cubic feet per minute

1. Select your room type

2. Enter room dimensions

3. Click Calculate to see results

4. View recommended fan type based on airflow needs

Recommended Reading

Straight-talking guides to damp, defects and what surveyors miss.

Rising Damp: The Myth, The Mess, and the Real Fixes

Buying a House – The Things Surveyors Miss