Founded in 2023 and based in Mumbai, ZnT Sim is a small team of consultants specializing in a wide range of building physics services for clients around the world. Our goal is to deliver high-quality results at a reasonable cost, ensuring the best value for our clients. 

What makes us stand out is our ability to manage projects from start to finish at every stage. This approach not only saves our clients time and money but has also earned us their trust, with most of them becoming returning customers. 

At the core of our business philosophy is a commitment to delivering outstanding results on time, while upholding strong ethical principles in our operations and financial dealings. 

In just one year, we have completed over 30 projects for about 8 clients across regions like the UK, Ireland, the Middle East, and India. This success reflects our ability to adapt to different project needs and regional requirements. 

Our portfolio includes a variety of services such as LEED certification, TM54 energy assessments, compliance with Part L building regulations, Climate-Based Daylight Modelling (CBDM), TM52 and TM59 thermal comfort simulations, Net Zero energy models, model reviews, calibrated operational energy modelling, and advanced parametric simulations. We also deliver Python scripting projects to efficiently extract and analyse results, bringing precision and innovation to our work. 

ZnT Sim specializes in providing a broad range of building physics services for various types of projects. Our services are designed to improve energy efficiency, comfort, and sustainability in buildings. These services include:

• LEED v4 and v4.1 Energy Modelling: We carry out detailed energy modelling based on ASHRAE 90.1 standards (2010 and 2016) to help projects achieve LEED certification. This includes analyzing energy use, load calculations, and system performance to meet the required energy efficiency targets.

• Estidama and Mostadam Energy Modelling: For projects in regions like the Middle East, we use ASHRAE 90.1 standards (2007 and 2013) to perform energy modelling to meet the energy performance criteria set by Estidama and Mostadam sustainability certifications.

• Part L Compliance Modelling: We ensure compliance with Part L of the building regulations in the UK, Scotland, and Ireland. This involves modelling a building’s energy use to meet local regulations for energy efficiency and carbon emissions reduction.

• TM54, NABERS UK and Operational Energy Modelling: We specialize in calibrated operational energy modelling, ensuring buildings meet the performance requirements of TM54 and NABERS UK, both at design and operation stages.

• TM52, TM59, and BB101 Overheating Analysis: We conduct in-depth analysis to identify potential overheating issues in buildings, following the guidelines of TM52, TM59, and BB101 to ensure thermal comfort and compliance with building regulations.

• Thermal Comfort and Daylighting Analysis: Our team performs detailed thermal comfort and daylighting studies, helping projects meet LEED and BREEAM certification requirements by analysing indoor temperatures, air quality, and natural light distribution.

• HVAC Load Calculations: Using established ASHRAE and CIBSE methods, we calculate the heating, ventilation, and air conditioning (HVAC) loads for buildings. This ensures that HVAC systems are sized correctly for maximum efficiency and comfort.

• MEP Design and Façade Optimization: We assist with the design of mechanical, electrical, and plumbing (MEP) systems, while also optimizing building façades for better energy performance, comfort, and cost-efficiency.

• Evaluating Passive Design Strategies: We use parametric simulations to test and evaluate passive design strategies, such as natural ventilation and shading, to reduce energy consumption and improve overall building performance.

• Python Scripting for Automation: To streamline repetitive tasks in our energy modelling process, we offer Python scripting services. This automation helps to save time, reduce errors, and improve the overall efficiency of the modelling work.

Our team utilizes the IESVE software suite, a powerful and feature-rich tool, to provide accurate and reliable building physics services. This software enables us to deliver detailed, high-quality results that meet the specific needs of each project, helping our clients achieve their energy, sustainability, and comfort goals.