W.H.Posted January 24, 2024 WH Demmons partners with Sheridan Corporation and Seashore Trolley Museum on Designing and Installing another energy efficient Geothermal HVAC System for their new Model Railroad Building!
... read more »
W.H. Demmons in the News
Posted June 21, 2017 W.H. Demmons visits AEC Queretaro, Mexico for installation of our new process cooling system.
Doug Martin and Carl Piirainen, on site in Queretaro, Mexico making a site visit to inspect the installation of our new process cooling system. We will be back in mid July to complete the... read more »
Posted September 28, 2016 Greater Portland Landmarks Preservation Honor Award
In Sept of 201, W.D. Demmons was awarded a Greater Portland Landmarks Preservation Honor Award, for our contribution in restoring the George S. Hunt Block (1886). The restoration involved a... read more »
Since 1914 Energy Solutions Specialists
For more than a century, W.H. Demmons has been engineering energy solutions for customers across the globe. Every room, every building, every campus - we listen to our clients, we work within their confines, and we deliver observable results. At W.H. Demmons, we are saving you money all year long. All you have to do is contact us.
More about us »