Smoke Pen Analysis during a retrofit Airtightness Pressure Test by Heat, Space and Light Ltd Published 23 February 2021 at 1301 × 638 in Forensic airtightness test gives 30% lifetime heating bill savings Using a smoke pen to visualise leaks is useful to find leaks during an airtightness pressure test Smoke Pen Analysis during a retrofit Airtightness Pressure Test by Heat, Space and Light Ltd ← Previous