By Eamonn Ryan
The following article is derived from an ASHRAE UK presentation on ASHRAE UK chapter’s upcoming Hot Climate Design Guide, by Frank Mills, FASHRAE and professional consulting engineer. This is Part 2 of an eight-part series.

By focusing on the health and productivity of occupants, the guide aims to create buildings that contribute to more comfortable, resilient and thriving communities. Freepik
The guide will include case studies from diverse regions, such as Kuwait and the UK, to illustrate effective cooling strategies that have been successfully implemented. For instance, in Kuwait, where daytime temperatures regularly exceed 40°C, and can reach as high as 54°C, the need for cooling is critical. However, traditional air-conditioning systems contribute significantly to energy use and carbon emissions, exacerbating the very issue they are designed to solve. The guide will highlight innovative approaches that have been employed in these regions to reduce energy consumption and carbon footprint while maintaining indoor comfort.
Additionally, historic buildings in hot climates will be explored to showcase how traditional design techniques, such as courtyards, thick walls and natural ventilation, have been used for centuries to keep buildings cool. These case studies serve not only as a testament to the effectiveness of passive cooling strategies but also as inspiration for modern, sustainable design.
People-centered design: health, productivity and wellbeing
While energy efficiency and sustainability are key drivers of the Hot Climate Design Guide, the guide also emphasises the importance of people-centered design. Achieving thermal comfort in buildings is not just about reducing energy consumption—it is also about enhancing the health, wellbeing and productivity of building occupants. Research consistently shows that temperature-controlled indoor environments with proper humidity levels (between 40-60%) promote both physical comfort and cognitive performance. By focusing on the health and productivity of occupants, the guide aims to create buildings that contribute to more comfortable, resilient and thriving communities.
Integrating sustainable practices
Sustainability is a core theme of the guide, and it will link its strategies to various green building rating systems, such as LEED and BREEAM. The guide will address how to meet the energy efficiency goals outlined in these systems while also reducing carbon emissions. It will discuss strategies that contribute to sustainable development in the built environment, including the use of renewable energy sources, efficient cooling systems and low-impact building materials.