OUR STORY
Passihvac Limited was founded in 2021 with the purpose of providing innovative techniques across the building, construction and building services sectors for natural ventilation, passive heat recovery and moisture removal.
At PassiHVAC, we believe that the right understanding and technological edge can lead companies towards a successful future. We always seek valuable feedback from our clients in order to learn and evolve. Contact us today to set up a meeting with one of our sales representatives or request a demo.
MEET THE TEAM
Our team is made up of bright and like-minded individuals, who have come together to explore endless possibilities. We come from a variety of different fields and technical backgrounds, yet our passion for PassiHVAC Limited ties us all together. Check out the people who make PassiHVAC Limited the amazing company it truly is.
KAISER CALAUTIT
Founder and Managing Director
Kaiser is the Managing Director of PassiHVAC Limited and an Industrial Engineer with more than 40 years of experience in the manufacturing, construction, oil & gas and steel industry working at some of the biggest companies like Toyota Motor Corp., Sumitomo Corp. and Arabian American Oil Company. Kaiser held several management positions and was involved in prestigious projects in Saudi Arabia, Kuwait and UAE.
JOHN CALAUTIT
Technical Director
Dr John is the Technical Director of PassiHVAC Limited and an Academic with more than 10 years of experience in research and development at some of the top Universities in the UK and world.
NIDA SANTOS
Administration and Finance Director
We trust Nida with all of our business needs at PassiHVAC. Enthusiastic and curious, she proves that no feat is too big to tackle. From business and administrative support to finance operations, you want her in your corner.
HAO SUN
Research Director
Hao Sun is the R&D specialist at PassiHVAC Limited, his expertise is in passive cooling technology design and building energy consumption analysis and optimization. With a dedicated focus on passive buildings, low-carbon structures, and sustainable architectural technologies, Hao excels in data analysis using Computational Fluid Dynamics (CFD) techniques and energy consumption simulation software. His proficiency extends to hands-on experience with extensive field experiments and wind tunnel testing. Currently engaged in sustainable energy technology research at two universities in Nottingham.
MURTAZA MOHAMMADI
Sustainability Director
Murtaza Mohammadi leads the sustainability division at PassiHVAC. He holds a PhD in building technology and specialises in building performance, environmental analysis, and evidence-based decarbonisation strategies, supporting clients across design, retrofit, and operational stages. He is a Carbon Literate professional, delivering Carbon Literacy training to built-environment practitioners to support climate awareness, behavioural change, and practical emissions reduction.
ABDULLAH DIK
Technology Director
Dr Abdullah Dik specialises in sustainable energy technologies and renewable energy integration. His expertise includes electric vehicle (EV) smart charging, vehicle-to-grid (V2G) systems, and the integration of heat pumps with renewable energy sources to support low-carbon energy networks.
His work focuses on the interaction between EVs, smart grids, and energy-efficient buildings, contributing to resilient and scalable solutions for carbon reduction and the transition to net zero.
Want to meet a member of our incredible team? Give us a call.