Mr. Richie Mittal is Managing Director, Overdrive Engineering Pvt. Ltd., dealing in Energy Efficient Design, IAQ and Geothermal for enclosed facilities; Energy Audit, Green Building, etc. Mr. Richie, ME in Thermal, has 4 decades of professional experience in the HVAC industry and is Guest lecturer in Engineering Colleges including IIT, Delhi. Mr. Richie is Director & Regional Chair (DRC) of Region at Large at ASHRAE for a tenure 2021 to2024. Professional associations of Mr. Richie include – National Past President of ISHRAE; Past Member Board of Director – IAQ Association Inc (USA). He was Founder Member – International Ground Source Heat Pump Association (USA) from 2018 till 2022, India Chapter IGSHPA. He is Chair– Research in ASHRAE for TC 5.7 for Evaporative Cooling and Member. He is associated as Member – R&D Project Sectorial Appraisal Committees for Ground Source Heat Pumps of MNRE and involved with various Technical Committees at ASHRAE.