Specializing in high performance building practices since 1972, R.H. Irving is one of New Hampshire’s most experienced home builders. We are skilled in a wide variety of energy efficient and sustainable construction techniques, including high performance construction, super insulation, triple glazed windows, air sealing, heat recovery ventilation systems, designs that utilize natural daylight and passive solar heat, panelized stick framing, and post & beam construction. Our high performance building practices result in unparalleled comfort, healthy indoor air quality, low heating costs, and long term affordability.

Ripcord Engineering offers integrated high-efficiency HVAC and plumbing design, energy modeling, and mechanical commissioning for commercial and residential buildings. On time. On top.

We specialize in energy-efficient home remodeling, green building & historic preservation. Our projects include additions, bathrooms, kitchens, and whole house renovations that blend seamlessly with the architectural style & period details of your home while enhancing its energy efficiency, functionality, and comfort. We pride ourselves on attention to detail and reinforce our commitment to high standards through ongoing education in energy efficiency and sustainable building materials and methods. We strive to establish a relationship with our clients based on trust and integrity.

Full-service builder/designer for energy-efficient residential construction in the NH lakes region. Timber-framing as well as advanced hybrid construction, with expertise in solar thermal system design and installation since 1978. Our Sandwich cabinet shop can furnish your project as well.

Focusing on rural homes in New England with emphasis on excellent plans, emotionally uplifting spaces, low energy use, tactile and locally sourced materials, and a very collaborative process.

The ROCKWOOL Group is the world’s leading manufacturer of stone wool insulation. We offer a full range of high-performing and sustainable insulation products for the construction industry. Our insulation products are based on innovative stone wool technology; today, we are the world’s leading manufacturer of stone wool insulation. The ROCKWOOL group also includes a range of sister companies delivering specialist solutions for the horticultural, marine, and offshore sectors. We are committed to empowering everyone to rise to the development challenges of modern living. By using stone, one of the world's most abundant natural resources, you can make a lasting impact across generations.

Ross Energy is dedicated to helping our clients achieve energy security for their buildings and communities. We will help your building become more comfortable and efficient, as well as more resilient to extreme weather events. Our staff has experience in over fifty million square feet of buildings, including clients such as the United States Environmental Protection Agency (EPA), the Department of Defense (DoD), the Guggenheim Museum, and well over 50 real estate developers and property management firms. We proudly focus our services on the greater New York, New Jersey, and Pennsylvania Tri-state area and are actively growing. Our expertise lies in multifamily and commercial properties.

Roxbury Community College is a co-educational public institution of higher education offering Associate Degrees and certificate programs. RCC's primary objective is to provide residents of the Commonwealth, specifically those individuals living in the greater Boston area, "optimum opportunity for access to a college education consistent with their interests and aptitudes and to reduce to a minimum economic, social, psychological and academic barriers to educational opportunity." The college's goals result from ideas generated by and from the college community and reflect a response to the needs of the larger Roxbury community.

Environmentally sensitive residential work in the New England region is our specialty. We enjoy the collaborative process of working with a client and their contractor to bring ideas to fruition.

RST Thermal is a manufacturer’s representative in the New England area covering Eastern Massachusetts, New Hampshire, Maine, Connecticut, and Rhode Island for multiple leading manufacturers whose products offer a systems approach to comfortable heating and cooling. We provide technical and sales support to our wholesale distributor partners and contractors. For homeowners, we provide geographic lists of installing and servicing contractors to help them find the “best fit” for the project to be done.

Rust Construction is a 4th generation family-owned construction business based in Alexandria, VA.

Award-winning, full-service Boston area residential design-build company committed to responsible design and construction practices. Experts in energy efficiency and weatherization.