Ventilation Calculator

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

Submit the form to view your results and graph.

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