PRESS RELEASE

    Version 6.2 of Building Efficiency System Tool™ (BEST) Now Available for Download

    Version 6.2 of Building Efficiency System Tool™ (BEST) Now Available for Download

    Ontario, Calif. — Version 6.2 of the Radiant Professionals Alliance’s (RPA) Building Efficiency System Tool (BEST), an interactive commercial building HVAC system efficiency comparison application, is now available for download HERE. The enhanced BEST 6.2 focuses attention on energy use, including up to four selected systems in one life-cycle comparison report that utilizes historical design temperatures to determine peak energy demand and the energy utilization index (EUI).

    The latest version of BEST addresses the challenge of sustainability and decarbonization tactics to use less energy. The application helps identify the choices clearly by utilizing data from projects throughout the United States. BEST 6.2 now includes up to 10 building types per 1,000 U.S.-based locations, based on weather, load and utility rates provided by trusted sources. 

    “Our industry is changing rapidly and utilizing digital modeling tools can help us to make informed decisions about building systems and the options we have,” said John A. Mullen, technical liaison to the Radiant Professionals Alliance and director of technical services and research with The IAPMO Group.

    BEST 6.2 includes a Demand Energy Efficiency Ratio (DEER) tab that makes it easier than ever to compare energy demand to existing efficiency ratings.

    “When you use BEST software for system design, you get a side-by-side comparison of up to four system types,” said Greg Cunniff, head of Application Engineering for the Hydronics Industry Alliance (HIA), the RPA committee responsible for the development of BEST. “This free tool can help determine the return on investment for building owners who looking to have the most efficient building on the block or benchmark their current use for long-range capital planning.”

    Upon its introduction in 2016, BEST solved a long-standing industry issue of being able to accurately compare different styles of HVAC systems, which are all tested to different standards, with various efficiency ratings (EER, IEER, SEER, COP, HSPF), as they are applied in an actual building.

    To learn more about the HIA and the RPA, or to join this important efficiency advocacy effort, visit www.hia-c.org and www.radiantpros.org. Please contact John Mullen at john.mullen@iapmo.org or (631) 994-4774 for any questions on the RPA and the BEST software.

    Blueprint for Progress: IAPMO at the ANSI Innovation Summit Demonstrates How Codes and Standards Advance U.S. Competitiveness and Public Health

    21 October 2025

    IAPMO® is proud to be a diamond sponsor and administrating organization at the 2025 ANSI Innovation Summit this week. Formerly World Standards Week, the ANSI Innovation Summit is an annual event that convenes the Institute's members and private- and public-sector stakeholders from across the standards and conformity assessment communities to come together, learn from each other, and showcase their important work. 

    IAPMO Celebrates 10 Years of WorldSkills Global Industry Partnership

    16 October 2025

    IAPMO®, a global team of experts engaging industry and government for a safer built environment, and its charitable foundation, the International Water, Sanitation and Hygiene Foundation (IWSH®), are proud to celebrate 10 years as a WorldSkills Global Industry Partner. IAPMO and IWSH celebrated the milestone this week at the annual General Assembly of WorldSkills International Members in Dubrovnik, Croatia.

    New WPC Africa workgroup promotes regional collaboration and further Global Partnership at WorldSkills Africa 2025

    13 October 2025

    A first-of-its-kind workshop for African World Plumbing Council (WPC) member organizations was held alongside the WorldSkills Africa 2025 capacity-building program for Plumbing, hosted at the Fountain Gate Craft & Trades School in Lusaka, Zambia, from Sept. 1-5. This workshop assembled a team of proactive WPC representatives from Zambia, South Africa, and Rwanda for a first in-person meeting of WPC member organizations on the continent. 

    Scroll to top