Fidelity Building Services Group Acquires Compressor Energy Services

Fidelity Building Services Acquires AIR Technologies

October 18, 2021

HVAC & Mechanical

Fidelity Building Services (Fidelity BSG), a portfolio company of Oaktree Capital Management, has acquired AIR Technologies, an Oklahoma City–based mechanical/HVAC service provider. The add-on deal (effective October 8, 2021) expands Fidelity BSG's geographic footprint into Oklahoma and enhances its HVAC, sheet metal fabrication, and building-automation capabilities.

Fidelity Building Services Group Acquires Chesapeake Mission Critical

December 19, 2023

Electrical Services

Fidelity Building Services Group has acquired Chesapeake Mission Critical, a Beltsville, Maryland–based provider of mission-critical power and precision cooling systems. Chesapeake Corporate Advisors served as exclusive financial advisor to Chesapeake Mission Critical; the CMC management team will continue to run the business as an operating division of Fidelity BSG, with Mark Ryan serving as President of CMC and Partner in Fidelity BSG.

Fidelity Building Services Group Acquires Air One Industries

December 8, 2022

HVAC & Mechanical

Fidelity Building Services Group (Fidelity BSG) acquired Air One Industries, a North Carolina-based mechanical/HVAC provider, adding the company to Fidelity’s integrated building solutions platform. The acquisition expands Fidelity BSG’s service footprint in the Southeast and brings Air One’s capabilities in HVAC installation, chiller/process cooling, building automation, and 24/7 maintenance into its family of companies.

Fidelity Building Services Group Acquires Power of Clean Energy

September 12, 2023

Energy

Fidelity Building Services Group (through its Fidelity Energy & Sustainability team) has acquired Power of Clean Energy (PCE), a Nashville-based provider of energy transition planning and project implementation. The deal expands Fidelity’s energy and sustainability capabilities and strengthens its footprint across the southern United States as it scales toward a national platform for energy-efficient building solutions.

Onex Partners V Acquires Fidelity Building Services Group

November 9, 2021

Industrial Services

Onex Partners V, a fund of Onex Corporation, has agreed to acquire Fidelity Building Services Group in partnership with the company's management team. Fidelity BSG is a provider of HVAC, mechanical, building automation and emergency power services headquartered in Sparks, Maryland; Onex said it will support Fidelity's organic growth and accelerate its acquisition strategy. Terms were not disclosed and the transaction was expected to close later in 2021 subject to customary conditions.

Fidelity Building Services Group Acquires St. Johns Air

December 11, 2025

HVAC & Mechanical

Fidelity Building Services Group has acquired St. Johns Air, a Jacksonville-based provider of HVAC and refrigeration services, expanding Fidelity’s footprint into Northeast Florida and South Georgia. The deal adds HVAC, refrigeration, preventive maintenance and retrofit capabilities to Fidelity’s national platform and strengthens service coverage for commercial and industrial customers in the region.