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' Geothermal, HVAC / Controls and Roofing divisions focus on energy efficient designs customized to reduce your energy costs

W.H. Demmons HVAC & Controls Division

The HVAC & Controls Division is a full service Design-Build-
Maintain engineering company offering a broad range of state of the art services to residential, commercial, industrial and marine customers.

The HVAC Division, originally Maine Air Conditioning, focuses on improving your energy efficiency, utilizing the expertise and experience of highly trained engineers and technicians.

W.H. Demmons' Controls Division uses innovative technology to reduce your energy costs. Controls allows you to manage all aspects of your energy output 24/7, putting more money back in your pocket!

Let W.H. Demmons' HVAC & Controls Division Work For You!

W.H. Demmons is a Reliable Controls Authorized Dealer

  HVAC Services
Cooling and heating systems
Air distribution systems
Refrigeration systems
Hydronic pumps
Water source heat pumps
Air and water balancing
Oil piping & Gas piping
Preventative maintenance
Sales & installation for replacement of or additions to existing systems
Marine Service Dealer for Adler-Barbour, Nova Kool, Nor Cold, Sea Frost and Grunert for refrigeration and Crusair, Marine Air, Lunair and Ocean Air for air conditioning.


Controls Services

Design, installation & maintain HVAC controls
Integrate existing security systems with building control systems
Design, installation & maintain building lighting controls
Reto-fit existing controls systems
Design, install, maintain & integrate BacNet controls systems
Support and installation of Honeywell, Carrier and Johnson controls systems
Design, install & maintain Variable Frequency Drives for all types of motors.
Design, install & maintain motorized shades and blinds for building envelope control
Engineer, design & install customized graphics and programs for any controls project
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W.H. Demmons, Inc. | 93 Warren Avenue | Portland, Maine 04103 | 207-797-7468 | www.whdemmons.com