Abu Dhabi has launched a new Cooling Load Manual to improve energy efficiency and support sustainable construction across the emirate. The Department of Energy introduced the new guidance as part of its Energy and Water Efficiency Strategy 2030. Officials said the manual will help developers, engineers, and designers install correctly sized air conditioning systems, reduce energy use, and lower building costs.
Air conditioning is one of the largest users of electricity in the UAE. Officials said AC systems account for around 60% to 70% of electricity consumption in buildings. Many of these systems are also larger than necessary, with oversized equipment estimated at between 25% and 35%. This increases construction costs, energy use, and long-term operating expenses.
The new Cooling Load Manual aims to solve this problem by providing clear technical guidance on how to calculate cooling requirements more accurately. The manual offers practical recommendations based on data and industry best practices to help professionals choose air conditioning systems that match the actual cooling needs of a building.
According to the Department of Energy, properly sized air conditioning systems could reduce installed AC costs by as much as 35% across all new buildings in Abu Dhabi. Officials estimate this could save around AED560 million, or about $153 million, every year.
Homeowners could also benefit from the new approach. For a typical residential villa, the department said accurate cooling calculations could reduce the cost of air conditioning equipment by up to AED56,000. Owners may also pay lower electricity connection fees and reduce their power bills by as much as 25% over time.
Officials explained that correctly sized systems do more than reduce costs. They also lower electricity consumption, reduce operating expenses, improve indoor comfort, and extend the lifespan of cooling equipment. Smaller and more efficient systems also place less pressure on the electricity network during periods of high demand.
The Cooling Load Manual follows Abu Dhabi building codes as well as internationally recognized engineering standards. It is mainly intended for new developments, but officials said the guidance can also be used for renovation projects and reviews of existing cooling systems. The recommendations support professionals from the early planning stage through detailed building design.
The manual also highlights common mistakes that often lead to oversized cooling systems. These include unrealistic design assumptions, excessive safety margins, and failing to consider how different parts of a building use cooling at different times. By avoiding these issues, developers can design more efficient buildings without reducing comfort.
The guidance also encourages sustainable building practices that reduce cooling demand before mechanical systems are installed. These include climate-responsive building design, proper zoning of indoor spaces, and accurate assessment of heat entering the building. Officials said considering these factors early in the design process can significantly reduce the amount of cooling a building needs.
To support the rollout of the manual, the Department of Energy has also introduced a Cooling Load Verification Tool. The digital tool allows developers, designers, consultants, and government agencies to compare their cooling calculations with the new manual. It can identify possible overdesign and estimate the savings that could be achieved through more accurate system sizing.
Senior officials said the initiative forms part of Abu Dhabi’s wider efforts to improve resource efficiency and strengthen sustainable urban development. They noted that better cooling system design will help manage electricity demand, make better use of available resources, and support long-term environmental goals.
The Department of Energy said accurate cooling load calculations can create long-term value for both developers and building owners. Lower construction costs, reduced energy use, and improved system performance are expected to benefit future projects across the emirate. Officials added that the new Cooling Load Manual reflects Abu Dhabi’s continued commitment to building a more efficient, resilient, and sustainable energy system while supporting responsible growth in the construction sector.
