Harvest Business Advisors is pleased to announce Site Support Services, a Baltimore area HVAC/A-C service and preventive maintenance contractor has been acquired by Tate Engineering Systems, a leading full-service solution provider for mechanical equipment and systems in the Mid-Atlantic region.

“It was my pleasure to work with both Don Mellinger (Site Support Services) and Alec Baker (Tate Engineering Systems) and their teams, bringing together two leaders in the HVAC-Mechanical services industry. From the first meeting, both parties understood the synergy of the combination and were committed to making it happen. I appreciate the opportunity to work with them on this transaction.” said Ed Davis, C.P.A., C.V.A., a partner at Harvest Business Advisors and the business broker/intermediary who facilitated this acquisition.

Tate Engineering is headquartered in Baltimore and has offices throughout Maryland, Virginia and Pennsylvania.

“The combination of Tate Engineering and SSS is a perfect fit for our mission of providing trusted mechanical expertise and service to our customers. This will allow us to offer maintenance, repair, and mechanical system solutions that meet all of our customers equipment room needs. We couldn’t be more pleased to offer the combined strengths of both companies to our entire customer base.” said Alec Baker, President and CEO of Tate Engineering.

Donald Mellinger, CEO & Owner of Site Support Services said, “I believe Tate Engineering is the perfect synergistic fit for us and our customers. Our cultures and relational values are very similar. Most Importantly, our long-term commitment to our customer relationships, focus on safety and the high value we place on our team members are shared by both companies.”

Harvest Business Advisors congratulates Baker and Mellinger on this successful merger and wishes them great success in the future.


Clients choose Harvest Business Advisors for our accurate business valuations and our proven ability to deliver the highest price in the smoothest sale transaction possible. Harvest Business Advisors provides business brokerage, business valuation, and business succession planning services. We have extensive experience in the information technology and professional services, manufacturing, distribution, and contracting fields. We maintain offices in Maryland, New Jersey and Virginia. Connect with us at info@harvestbusiness.com or 877-838-4966 to discuss selling your business, ordering a business valuation or buying a business.