John O’Brien from AirDoor at VES has 15 years engineering experience in the energy efficiency sector and works closely with retailers, NHS trusts, education and estates teams to address energy loss and environmental control challenges at building entrances. With a strong focus on airflow management and energy-efficient buildings, John helps organisations reduce energy use, improve comfort and meet sustainability targets. He brings a practical, outcomes-focused approach, grounded in real-world examples and operational experience.
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