BEST 6.0: The Building Efficiency System Tool Available for Download

The Hydronic Industry Alliance-Commercial, a committee of the Radiant Professionals Alliance, has released version 6.0 of its Building Efficiency System Tool, an interactive commercial building HVAC system efficiency comparison application.

The revised software, available online at no charge, adds the ability to compare projected costs and energy usage for all HVAC systems and hot water consumption in any building based on what is known before money is spent on selection of the HVAC and water heating systems. Almost all inputs may be adjusted once the design process begins.

BEST 6.0 is available for download at http://forms.iapmo.org/hiac/software_register.aspx.

BEST 6.0 also includes the following advancements:

Ability to model multiple heating and cooling sources. This enables modeling of all electric systems using cascaded heat pumps and backup sources

  • Cascaded systems can include:

– Air-to-water heat pumps with water-to-water boosters and boiler backup sources
– Water-to-air heat pumps with ATW heat pumps and boiler backup sources
– WTW and WTA heat pumps with hybrid geothermal sources
– Air-to-air heat pumps with furnace, boiler or resistance backup sources
– Multiple types of heating or cooling sources configurable for load splitting

  • Air source heat pumps with ability to model user definable ambient temperatures for cut in of backup sources or cutoff of heat pump

Introduced 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.


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