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


W.H. Demmons Safety Record

General Contractors and Builders have long recognized the value of choosing construction partners who emphasize safety. Safety has been a top priority for W.H. Demmons for many years. Our company invests significant time and money in continual safety training, and boasts one of the highest safety records in our various industries.


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