Maintenance of building system performance over time is an issue that owners of all buildings face. Existing Building Commissioning, also known as retro-commissioning, is a process that combines elements of new building commissioning, energy audit and building tune-up. The benefits of undergoing Existing Building Commissioning are its ability to resolve operating problems, improve comfort, optimize energy use and solve problems that will develop naturally on any buildings life over time.

TTSE utilizes a systematic process to help building owners to maintain their building systems optimum performance via preventative measure and avoid major repair cost while saving energy.