A group of commercial manufacturers supported by International Association of Plumbing and Mechanical Officials (IAPMO) and members of the Hydronics Industry Alliance, a Committee of the Radiant Professionals Alliance, have released BEST: The Building Efficiency System Tool.
Available free of charge, BEST allows users to accurately compare different styles of HVAC systems. HVAC systems are all tested to different standards, with various efficiency ratings (EER, IEER, SEER, COP, HSPF), as they are applied in an actual building.
BEST uses the Building Energy Efficiency Ratio (BEER), which takes certified AHRI data, manufacturers’ published performance data at multiple performance points, as-applied correction factors, performance curves for components, pipe and duct required in a typical system. It combines these elements to bridge the gap between certified equipment efficiencies and real-world building system efficiencies.
Users enter the square footage of the building, the number of stories, and the nearest city for local weather data, and then choose up to four types of HVAC systems to compare from more than 30 pre-loaded systems.
BEST features more than 100 default input settings, including system cost per square foot (provided by more than 50 contractors around the U.S.), each of which are adjustable to model any building in any location. BEST outputs estimated installation cost, replacement cost, maintenance cost, monthly energy cost, electrical and fossil fuel consumption costs, total life cycle cost, cumulative life cycle cost by year, system payback time (as compared with other modeled systems), pump and fan HP, system integrated energy efficiency ratio (IEER), coefficient of performance (COP), and more.
Related Stories
| Jan 2, 2014
Measuring whole building energy use among big changes in LEED v4
A new prerequisite in LEED v4 calls for each project to measure whole building energy use, and then share that data with USGBC.
| Jan 1, 2014
San Francisco hosts Net Positive Energy + Water Conference
The Living Building Challenge’s Net Positive Energy + Water Conference will be held Feb. 4-5 in San Francisco.
| Dec 27, 2013
California’s new Title 24 energy code compliance date pushed back to July 1, 2014
Due to the stringency of the provisions in California’s new Title 24 energy codes, their implementation has been postponed until July 1, 2014 to allow jurisdictions and engineers to prepare for them.
| Dec 27, 2013
$1 billion 'city within a city' development approved by Coachella, Calif., city council
The mega development includes 7,800 homes, a retail center, office space, and nearly 350 acres of open space.
| Dec 26, 2013
OSHA may require companywide reporting of injuries and illnesses
The Occupational Safety and Health Administration is considering a change in policy that would require organizations to submit company-wide data on illnesses and injuries.
| Dec 26, 2013
USGBC recognizes Ohio for achieving 100th LEED-certified public school
The U.S. Green Building Council (USGBC) has recognized the state of Ohio and the Ohio School Facilities Commission (OSFC) on the LEED certification of the 100th public school building in the state.
| Dec 26, 2013
WDMA launches project to create ISO-compliant architectural doors
WDMA's National Architectural Door Council has initiated a project to create ISO-compliant Product Category Rules for architectural wood flush and stile and rail doors
| Dec 19, 2013
Defense Department okays Green Globes standard for DoD facilities
The Green Globes certification program from the Green Building Initiative can be used for the renovation and construction of Department of Defense facilities following agency endorsement.
| Dec 19, 2013
New York City proposal may boost standards for crane maintenance
New York City may boost maintenance standards for cranes operating in the city, including the addition of load cycle counters to record data regarding every lift that a crane performs.
| Dec 19, 2013
Lawmakers say EPA’s Energy Star standards lack transparency
A bipartisan group of lawmakers is raising concerns that the Environmental Protection Agency has not been transparent in drafting energy-efficiency standards under the Energy Star program.
