Areas of Expertise

  • General Contracting

  • Mechanical System Design & Installation

  • Construction Management

  • Refrigeration System Design & Installation

  • Design Build

  • Electrical System Design & Installation

  • Pre-Engineered Metal Buildings
  • Municipal Infrastructure Installation

  • Public & Private Water Supply Development

LRH Biomass Heating Plant – Littleton, NH  2013
DHI did a cost analysis of the existing heating system and structure and provided the hospital with a complete design to fit their needs.  We provided them with a Design Build proposal that included the site plan, architectural, structural, and mechanical drawings needed to complete the project.  The project included the construction of a new Biomass heating plant as well as necessary underground piping to connect to the hospital’s existing system. The new boilers are now fully operational.  The finished heating plant is now providing the facility with considerable energy savings.  The project was completed in December of 2013.


12 Pleasant Street
Colebrook, NH 03576
P: (603) 237-4454
F: (603) 237-8470
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