W.H. Demmons

A Legacy of Innovation and Expertise Since 1914

W.H. Demmons, Inc. boasts a rich history of delivering innovative building solutions across New England and beyond. Founded in 1914 as Demmons Roofing, the company has evolved into a leading design-build-maintain engineering firm recognized for its expertise in geothermal HVAC, roofing, and building automation systems.

Our Expertise and Services

Guided by a team of dedicated engineers, technicians, and project managers, W.H. Demmons offers a comprehensive range of services to meet the diverse needs of our clients. Our comprehensive portfolio includes:

Building Automation Systems

• Design and installation of advanced automation systems to optimize building performance, energy efficiency, and comfort.
• Expertise in various technologies, including control systems, thermostats, and sensors.

HVAC/R Services

• Comprehensive solutions for all aspects of HVAC/R systems, including installation, repair, maintenance, and energy efficiency upgrades.
• Specialized services for commercial and industrial facilities.

Roofing Solutions

• Complete roofing services, from inspections and repairs to complete installations of new roofs.
• Expertise in various roofing materials and technologies, including metal roofs and green roofs.

Additional Services

• Geothermal systems installations and consultations.
• Clean and dry rooms for enhanced indoor air quality.
• Design and implementation of marijuana grow room environmental controls.

A Commitment to Innovation and Sustainability

At W.H. Demmons, we are committed to pushing the boundaries of technological advancements to offer our clients the most efficient and sustainable building solutions. We are proud of our pioneering role in the development and implementation of ground-breaking technologies such as bipolar ionization for improved air quality.

Experience the W.H. Demmons Difference

With over a century of experience and a team of dedicated professionals, W.H. Demmons is your trusted partner for all your building needs. Contact us today and discover how our innovative solutions can enhance the comfort, efficiency, and sustainability of your project.