The bottom line! Building commissioning today

I would like to share this 2006 excerpt from the Building Design and Construction magazine white paper on the bottom line of building commissioning.

To put some solid numbers on benefits of commissioning, Evan Mills, PhD, and colleagues at Lawrence Berkeley National Laboratory, Portland Energy Conservation, and Texas A&M University (Energy Systems Laboratory) reviewed published and unpublished data on 224 buildings in 21 states, representing 30.4 million sf of commissioned space—73% in existing buildings, 27% in new ones. Total commissioning costs for these buildings were $17 million (2003 dollars), an average $0.55/sf.

Among their findings:
■ An average 11 deficiencies were found in existing buildings, 28 in new buildings. HVAC systems represented the bulk of the problems.
■ For existing buildings, median commissioning costs were $0.27/sf; energy savings came to a median 15% (18% average); payback times were less than nine months (0.7 years).
■ For new buildings, commissioning costs were $1.00/sf (0.6% of total construction costs), yielding a median payback of 4.8 years.
■ Reduced change orders and other non-energy benefits accounted for $0.18/sf savings in existing buildings and $1.24/sf for new construction— “comparable to the entire cost of commissioning,” the researchers note.

The authors conclude that “commissioning is one of the most cost-effective means of improving energy efficiency in commercial buildings.” While not a panacea, they admit, it is “one of the most cost-effective and far-reaching means of improving the energy efficiency of buildings.”

Post-occupancy evaluations can help property owners, developers, and AEC firms determine how buildings are functioning for tenants or occupants.

What can I add to this? Implementation and testing YOUR PROJECT. CALL ME TODAY for a no-cost evaluation

Tags: Building Commissioning, Energy, Energy Performance Contracting, Green Design, HVAC