Fidelity Building Services Group Acquires Masters Mechanical

Fidelity Building Services Group Acquires Nason Mechanical Systems

October 7, 2024

HVAC & Mechanical

Fidelity Building Services Group, a Hunt Valley, Maryland-based provider of HVAC, building automation, and energy solutions, has acquired Nason Mechanical Systems, a full-service mechanical contractor headquartered in Auburn, Maine. The acquisition expands Fidelity’s Northeast footprint and strengthens its HVAC/mechanical, plumbing, and energy-efficiency service capabilities across healthcare, education, industrial, and commercial end markets.

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.

Fidelity Building Services Group Acquires Tropic-Kool

November 12, 2024

HVAC & Mechanical

Fidelity Building Services Group has acquired Tropic-Kool, a Largo, Florida-based commercial design-build and HVAC/mechanical services contractor. The acquisition strengthens Fidelity's service footprint in the Southeastern United States and adds Tropic-Kool's fabrication capabilities and local customer relationships in healthcare, education and commercial/industrial markets.

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.