Accelerates Service Offering and Scale in Southern California

SAN JOSE, Calif.—February 25, 2019 – Therma Holdings LLC (“Therma”), a portfolio company of Gemspring Capital, today announced that it has acquired the assets of Integrated Mechanical Systems (“Integrated”), an Irwindale, Calif.-based provider of mechanical design, fabrication, construction and maintenance services.

“Integrated Mechanical is an established company with a great reputation among its customers in the Southern California market and is an excellent fit with Therma’s growth strategy,” said Therma CEO Joe Parisi.IMS Blog Graphic 2

“Since launching our Southern California office in 2018, we have received significant inbound interest on expanding our design-build offerings including the opportunity to bid on larger-scale projects,” said Don Bach, Therma VP / GM Southern California. “With the addition of Integrated Mechanical Systems, we are now positioned to meet that demand.”

Kevin Stiver, co-founder of Integrated Mechanical said, “We look forward to joining the Therma family and building upon the work we’ve done over the past 17 years to serve our customers, to propel new growth and to provide new opportunities for our employees.”IMS Blog Graphic 1

Therma will begin immediately to combine Integrated Mechanical into its existing Southern California operations, presenting a single face to customers as Therma.

About Integrated Mechanical Systems

Integrated Mechanical Systems, founded in 2002, is a full-service mechanical services provider offering engineering, installation and maintenance for HVAC, plumbing and piping systems for commercial, institutional, retail and light industrial facilities.

About Therma Holdings LLC

Therma Holdings LLC is a leading Bay Area mechanical services company focused on designing, building, and servicing custom and complex mechanical systems primarily related clean rooms, R&D, and manufacturing facilities. Therma provides engineering, estimation, design, building information modeling, energy modeling, design-build, specialty HVAC and pipe fabrication, modular skid and process controls, pre-fabrication and installation work for general contractors, construction managers and owners in the technology, biopharmaceutical, data center, semiconductor and other industries with complex mechanical requirements. For more information, please visit

About Gemspring Capital

Gemspring Capital, a Westport, Connecticut-based private equity firm with $355 million of equity capital under management, focuses on making control and structured equity investments in lower middle market companies headquartered in the United States and Canada. Gemspring partners with talented management teams and takes a hands-on approach to driving revenue growth and value creation. For more information, please visit