Go to deals
Construction & Engineering Services

Illingworth Engineering Company has been acquired by Thermal Tech

The shareholders of Illingworth Engineering Company have sold the company to Thermal Tech, Inc.

Illingworth Engineering Company specializes in the design, sale, repair and service of packaged boiler systems throughout north Florida and south Georgia. Founded in 1939 by Dick Illingworth, the company was sold in 1945 to O.H. Fletchall and has been in the family ever since. With over 80 years in the industry, Illingworth has proudly maintained well-established customer and vendor relationships and is recognized as the longest-standing authorized Cleaver-Brooks representative in the US.

Thermal Tech is a commercial and industrial boiler repair, installation and maintenance service provider located in central Florida. The firm was established in Tampa, Florida, in 1984 by one of O.H. Fletchall’s sons, Don Fletchall, and Hugh Wilson.

Oaklins’ team in Jacksonville acted as the lead advisor to the seller and the management of Illingworth Engineering Company in the preparation of the sale process and due diligence, the approach and parallel negotiations with potential buyers, and assisted them until closing.

Parties
“The decision to sell a business that had been in my family for over 75 years was obviously a big one, so I needed an advisor who would be able to guide me through every step while understanding the unique dynamics of a family-owned business. In Oaklins, I found a partner who understood the value of a multi-generational business and was able to seamlessly navigate the transaction process from start to finish. We told them that our buyer had to be one whose vision and operations were in line with Illingworth’s mission, culture and goals. The team was successful in finding and negotiating terms with such a buyer.”

Michael Fletchall

Owner, Illingworth Engineering Company

Talk to the deal team

Joe Hawkins

Principal
Jacksonville, United States
Oaklins Heritage

Mary Frosio

Principal
Jacksonville, United States
Oaklins Heritage

Don Wiggins

Principal
Jacksonville, United States
Oaklins Heritage

Robert Cilek

Director
Jacksonville, United States
Oaklins Heritage

Related deals

Capsol has been acquired by Angus Capital
Private Equity | Construction & Engineering Services

Capsol has been acquired by Angus Capital

Capsol has been acquired by Angus Capital as part of its strategy to build a leading construction services group alongside other portfolio companies. This partnership marks a new phase of growth for Capsol, providing the platform, resources and strategic support needed to accelerate its development and expand its market presence.

Learn more
MCA Architects has been acquired by TTSP HWP Group
Construction & Engineering Services

MCA Architects has been acquired by TTSP HWP Group

Irish architecture firm MCA Architects and German data center advisory company TTSP HWP Group have merged to create a fully integrated European group for the design, engineering and project delivery of large and complex data centers. The two firms will operate under a joint leadership structure and align their workforce and strategies to serve hyperscalers and global digital infrastructure clients across Europe.

Learn more
Arssarnerit has joined VVS & El Firmaet to strengthen technical services in Greenland
Construction & Engineering Services

Arssarnerit has joined VVS & El Firmaet to strengthen technical services in Greenland

Arssarnerit AS, a leading technical contracting and service company in Greenland, has been sold by MT Højgaard Holding AS to VVS & El Firmaet AS. The new partnership strengthens local capabilities and ensures continuity of technical services in Greenland, supporting long-term infrastructure development. It is expected to close in Q2 2026, subject to approval by the competition authorities.

Learn more