WGL Holdings, parent company of Washington Gas, has sold American Combustion Industries, a mechanical contractor, to a private equity fund and other investors.

Financial terms of the transaction were not disclosed.
Buying American Combustion Industries from D.C.-based WGL Holdings (NYSE: WGL) are Milestone Capital Partners, a D.C.-based private equity fund with $88 million of capital under management, and industry veterans John and Tim Kirlin.

John Kirlin was named CEO of American Combustion Industries, while Tim Kirlin was named president and chief operating officer. "We believe the Kirlin brothers will provide ACI with the necessary leadership to flourish as a standalone company," Murry Gunty, managing partner of Milestone Capital, says in a statement.

American Combustion Industries is a full-service mechanical contractor serving commercial, industrial and institutional customers in the Washington area.

The company provides building services such as facility assessment, mechanical, electrical, plumbing, maintenance and repair services, as well as mechanical and electrical system installations and renovations.

"The combination of ACI's existing strengths and Milestone's financial guidance will help the company become strong both strategically and financially," Tim Kirlin says.