W.H. Demmons in Portland, Maine designs-builds-maintains energy efficient building systems including HVAC, Controls, Geothermal Heating and Cooling, Duro-Last White Roofs, Metal Roofs & more.
W.H. Demmons, Inc. meets all your HVAC, Geothermal and Roofing needs

Maine Wood Treaters

Mechanic Falls, Maine


W.H. Demmons installed the Hybrid System for process control of Wood Pressure Treating. Geothermal heat pump systems provide hot water for chemical processing of pressure treating lumber.

A modulating gas boiler is used to boost loop temperature on extremely cold days. Geothermal hybrid systems also provide heating for the process area.

DDC Controls stage all heating and graphical user interface allowing the owner to monitor and adjust set-points.

W.H. Demmons HVAC and Controls Divions used Reliable Controls at Maine Wood Treaters

W.H. Demmons used Reliable Controls at Maine Wood Treaters





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W.H. Demmons, Inc. | 93 Warren Avenue | Portland, Maine 04103 | 207-797-7468 | www.whdemmons.com