What is the minimum AFUE rating for boilers according to LEED?

The minimum Annual Fuel Utilization Efficiency (AFUE) rating for boilers according to LEED (Leadership in Energy and Environmental Design) is 85%. This standard is set to ensure that heating systems are efficient, thereby reducing energy consumption and greenhouse gas emissions in building operations. A higher AFUE rating indicates that a boiler converts a greater percentage of its fuel into useful heat, leading to improved energy performance.

In the context of LEED certification, the emphasis is on sustainability and the efficient use of resources, making this minimum AFUE rating a critical factor in evaluating the energy efficiency of heating systems. Choosing a boiler with an AFUE rating of at least 85% aligns with LEED's goals of promoting environmentally-friendly practices and minimizing energy waste.