Project Profile

Project Profile: The Sustainability Institute, Charleston, S.C.



The Sustainability Institute (SI) in Charleston, S.C., is an award-winning, nonprofit, 501c(3) organization dedicated to encouraging South Carolinians to conserve energy, both at home and at work. SI, along with its performance assessment and construction partner CharlestonWISE, offers home performance evaluations, ASHRAE-level commercial energy audits and residential general contracting.

SI had big plans when it purchased 113 Calhoun Street as its new office space in 2010. It wanted to renovate the former Charleston Single House property to create a model of sustainable building practices.

SI was familiar with ductless cooling and heating systems as CharlestonWISE specifies them for its customers. After a standard pre-retrofit assessment, the team decided to use our M-Series systems as the HVAC solution for its new space.

The team installed four different types of indoor units to provide potential customers with an idea on how each unit would look in their homes. The property’s seven-zone system included wall-mounted, horizontal-ducted, floor-mounted and 4-way cassette indoor units.

Our system helped SI achieve a 75 percent reduction in energy costs, and our need for limited ductwork freed up enough space to install a full-sized kitchen in place of an earlier kitchenette. Individualized temperature control for each zone was an added bonus for the office staff.

SI offers tours, workshops and even special events, and serves as a research laboratory and energy usage monitoring center. It also reached its goal as serving as the city’s staple for energy-efficiency and sustainable living.

To learn more about the transformation of 113 Calhoun Street, click here for the Charleston Sustainability Institute Case Study.