The Future of Existing Buildings
Chelsea Group is a Hawaii-based building science consulting firm specializing in preserving and enhancing the mechanical infrastructure in existing commercial office, institutional, retail, and industrial facilities. For more than 25 years, our building scientists and engineers have solved problems and found opportunities that add asset value to these properties. The Chelsea team is widely recognized for its thought leadership in sustainable, high performance buildings.
Through retroﬁts of existing mechanical equipment and systems, we make buildings more energy efﬁcient, saving our clients money on their utility bills.
Are you spending too much money on your building’s energy?
See what we can do for you.
The Art of Building Science
Chelsea Group focuses building science on asset value and occupant satisfaction. The application of good science and engineering to existing buildings allows us — and you — to take into account the whole facility, as well as its complex parts. Working together to implement our recommendations, we can achieve a balance of performance, comfort, and aesthetics, resulting in greater property value and productivity.
A Celebration of Improving Hawaii’s Infrastructure
The Pacific Guardian Center
The Association of Energy Engineers
Pearlridge Mall Central Plant Replacement
Finding the Right Partner for the Job
Trust is vital when choosing a consultant for your building. With Chelsea Group, you sign on for award-winning design and execution. In both 2015 and 2016, we won the Energy Project of the Year for Region V of the Association of Energy Engineers. Our teams have helped more than 20 large properties, totaling over 14 million square feet, achieve their LEED Certification. Twenty-five years of maintaining mutually beneficial partnerships earns Chelsea Group its A+ rating with the Better Business Bureau.
Licensed Professional Engineers
LEED Accredited Professionals
Atma Bhawuk, LEED AP, PE
Mr. Bhawuk assist Chelsea clients in meeting technical requirements for LEED certification
Joe Semeniuk, LEED AP, PE
Mr. Semeniuk guides a team of engineers to achieving LEED certifications for Chelsea Clients
Dricka Thobois, LEED AP
Mrs. Thobois is Chelsea Group’s LEED project administrator
Award Winning Projects
The Queen’s Medical Center retained Chelsea Group in a series of central plant studies that began in 2008 and culminated in the Retro-commissioning and Central Plant Optimization. The net result was an annual saving rate that totals 687,013 kWh, which equates to electrical bill savings of $197,684.
Chelsea Group helped achieve 54% energy use reduction in the Pearlridge Mall with a complete central plant replacement. This project won Chelsea Group the 2016 Energy Project of the Year for Region 5 by the Association of Energy Engineers.
Chelsea Group consulted with Seimens contractors to upgrade 5,630 ton dual compressor centrifugal chillers, 2,800 ton variable speed centrifugal chiller, Two chilled water pumps with VFDs, two cooling tower cells with VFDs, and expand the existing Delta V Control System.
REDICO retained Chelsea Group to conduct a comprehensive retrofit of their central plant, resulting in a 220,000 kWh per year savings. Chelsea Group analyzed building trends, and oversaw installation of extensive submetering of electricity and both chilled and condenser water flow and temperature. The rebates from Hawaii Energy covered 85% of the project costs. The payback on the investment made by the owner was after less than 5 months of documented savings.
Chelsea Group managed the installation of 700+ LED fixtures and daylight control & motion sensors at the 7 story Ward Village Parking Garage. With the new technology, each light was adjusted based on actual need resulting in a reduction from 200 watts per light/day to 6 watts per light during the day time and 17 watts per light during the night time. Measured energy use reduction for the parking garage dropped by 93% putting the payback time for the investment at 1.2 years.
Chelsea Group used robots to get visual insight into the HVAC system that was the source of complaints made by hospital tenants. The resulting project from the robotic investigation achieved unexpected energy savings, enabling a current state-of-the-art performance of the hospital exhaust system.
Building Automation Modernization
Knowledge brings value and power to building owners, managers, and operators. Chelsea Group’s in-depth analysis offers insight and provides real solutions for challenges and opportunities in your building. We conduct PCAs — Property Condition Assessments — as well as energy & IAQ audits, and CapEx planning, providing the vital knowledge necessary to make good financial and operational decisions.
Implementing recommendations within an existing building often requires custom design for major infrastructure improvements, such as chiller replacement or air handler replacement. Chelsea Group engineers conduct detailed site investigations to determine existing conditions, updating or creating as-built drawings. Combining knowledge of technology options with our comprehensive understanding of site conditions, our team — working closely with the owner to review and approve designs at each stage — develops cost-effective infrastructure improvements. Following full approval, Chelsea Group engineers prepare construction documents for use in the procurement process. These high-quality bid documents result in well-tuned contractor proposals.
The high-quality construction documents produced by our design team provide an effortless hand-off to our construction management team. Our professionals prequalify appropriate contracting resources with the owner, assist in bid solicitation, and recommend the best resources for the project. From pre-bid to selection, Chelsea Group focuses on quality and cost effectiveness. We chair the OEC — owner, engineer, contractor — meetings and actively track and guide construction through the challenges of existing conditions to achieve project goals.
Commissioning (Cx) is a process by which projects are tracked and measured — from beginning to end — against the owner’s goals and project specifications. Our team develops an OPR — owner project requirements — and a BOD — basis of design — providing higher probability of an on-time, on-budget project. Our commissioning agent starts reviewing a project at the onset of design and continues with field verification of contractor work throughout. As the project construction nears completion, our team applies a systematic process of functional performance testing, resulting in demonstrable proof that the finished project meets owner’s expectations. Chelsea Group’s commissioning agent documents the entire process — from design through start-up — to achieve the best result, reporting it all for the owner.
Existing buildings have a continuous need for maintenance, as well as verification of peak efficiency operation. We provide owners with on-going support, enabling them to keep building systems operating correctly. When performance lags, our building scientists select the appropriate actions, maintaining thorough documentation of building energy use trends. Many of our clients have chosen to seek recognition for their on-going efforts through certifications of the performance of their buildings, such as:
–LEED Certification from the US Green Building Council
–Energy Star Certification from the US EPA
–Energy Project of the Year awards from the Association of Energy Engineers
Chairman & CEO
Joe Semeniuk, PE
Senior Building Scientist
Chief Administrative Officer
Wyeth Crawford, PE
Senior Building Scientist
Building Scientist Intern
Building Scientist Intern
733 Bishop Street, Makai Tower, Suite 181, Honolulu, HI. 96813