Onex Corp. (TSX: ONEX) through Onex Partners V, Onex’s $7.2 billion fund, has purchased Fidelity Building Services Group.

Fidelity Building Services is a provider of technical building solutions for commercial and industrial facilities. The firm aims to deliver best-in-class, non-discretionary services through every phase of a building’s lifecycle.

Its product offering includes a range of maintenance, retrofit, replacement and engineered design-build services for HVAC systems. The firm has 1,700 employees across 30 locations and 13 states.

“Fidelity BSG has a strong reputation for providing its customers with high-quality service supported by differentiated technical expertise,” said Matt Ross, managing director at Onex. “The company is well-positioned to benefit from an increasing focus on improving energy efficiency, indoor air quality and occupant comfort in buildings.”

On this transaction, Harris Williams served as financial advisor and Kirkland & Ellis LLP as legal counsel to Fidelity BSG. Latham & Watkins LLP served as legal counsel to Onex.