NESEA Business Member Directory

At Stephens and Company, we are committed to a culture of sustainable construction principles, integrating energy efficiency and industry-tested best practices across all disciplines of residential construction. Whether you are building a new home or renovating an existing building, we can help you make it a “fiscally environmental” home that performs at its maximum potential. We can help you understand and navigate state and town regulations, and we can help you take full advantage of all incentive programs available to you.

Steven Winter Associates provides research, consulting, and advisory services to improve commercial, residential, and multifamily built environments for private and public sector clients. We specialize in energy, sustainability, and accessibility consulting, as well as certification, research and development, and compliance services. Our engineers and architects have led the way since 1972 in developing best practices to achieve high-performance buildings. As a matter of course, we collaborate with our clients to produce the most cost-effective and innovative solutions.

Steveworks is an employee-owned residential remodeling contractor working in Newton, MA, and the surrounding area. Our company was founded in 2000 and is committed to quality, diversity, and sustainability. We consider energy performance, the carbon footprint of materials and resources, universal design principles, durability, functionality, and beauty in designing and executing projects our clients can enjoy for many years to come. We are proud to receive high marks both for the quality of our work and for the personality and integrity of our crew.

Stiebel Eltron is the world leader in advanced water heating technology. Founded in Germany in 1924 by Dr. Theodor Stiebel, the company is still family-owned. The product line has grown to include whole house and point-of-use tankless electric water heaters, including the Tempra® Plus with German-patented Advanced Flow Control™, commercial/industrial three-phase water heaters, mini-tank and wall-mounted water heaters, air-to-water heat pump water heaters, plus small, quiet electric space heaters and contemporary, high-efficiency touchless hand dryers. Stiebel Eltron is known worldwide for its engineering and manufacturing expertise and drive to develop innovative products with greater energy efficiency, convenience, and reliability.

Studio G Architects is a women-owned architecture and planning firm based in Boston, nationally recognized for our leadership in sustainable and regenerative design. We create healthy, high-performance buildings that not only reduce carbon and conserve resources but also restore ecosystems and enhance community well-being. With in-house Certified Passive House Consultants, we bring deep expertise in delivering energy-efficient, climate-resilient buildings that meet and exceed performance goals. Our work spans schools, housing, and civic spaces, all grounded in the principles of environmental, social, and economic sustainability.

The Studio for High-Performance Design + Construction (Studio HPDC) provides training and education in High-Performance, Net Zero, and Passive House design and construction. Housed in a state-of-the-art Passive House facility, Studio HPDC is a classroom and educational center for sustainable design & construction. We develop and host training courses for students, tradespeople, and architects at all experience levels, ranging from introductory sessions and overviews to hands-on workshops and certification programs. In addition to training courses, we host regular networking and discussion group events and provide resources for all those interested in sustainable construction.

Sublime Windows is making the most energy efficient, European-style, triple-pane windows available to the Northeastern US. All of our products have been carefully designed to optimize real-life performance for our specific climate. With a solid understanding of building science, energy modeling, architectural detailing, and construction techniques related to energy efficient buildings, we offer superior products, support and service.

Sunwood Builders proudly serves the Pioneer Valley, including Amherst, Hadley, South Hadley, Leverett, Granby & Northampton. We specialize in building distinctive luxury homes architecturally suited for placement within Pioneer Valley's historic towns and surrounding communities. Creating a new custom home is an intensely personal experience, and we work hard to ensure that the home we build for you reflects your own values, needs, and lifestyle. Our years of collective experience and expertise as a custom home builder ensure you have a knowledgeable, personal guide all the way through the home design and build process.

Superior Co-Op HVAC is a veteran-owned Mitsubishi Diamond Contractor Elite located in NY, just a few miles from Vermont. Our mission is to provide heat pump solutions in Vermont and the entire capital region of New York, including the Adirondacks, to eliminate the use of fossil fuels. Mitsubishi Hyper Heat Pumps can easily heat and cool their home or business, even when temperatures outside dip to -13F, without the help of any backup heating. Our commitment is to help our customers save on their energy bills and reduce energy consumption with practical HVAC solutions, quality products, and efficient service.

Sustainable Comfort is a consulting, development, and property management firm with expertise in energy-efficient multifamily housing. SCI specializes in ENERGY Star homes, LEED for homes, Enterprise Green Communities, Passive House, HERS Rating, state incentive programs, and code compliance. We are a small group who believe that through better construction practice and management, we can help developers, architects, contractors, and residents achieve healthier, resilient, and sustainable multi-family buildings. Our vision is to move the multi-family market to conscious development and management that results in sustainable buildings that support the people who build them and call them home, and the communities that surround them.

Sustainable Energy Analytics is a service company centered on energy efficiency and resiliency in the residential new construction sector. Our current product set includes HERS Ratings, LEED Certifications, Phius Certifications and testing, energy code compliance/verification, Mass Save incentive program support, various energy, air, and resiliency certifications, building science consulting, HVAC equipment & building envelope testing, and premium energy audits. We offer our services primarily in eastern Massachusetts, with occasional projects in the New England region.

SPI’s Roadmap to Continuous Improvement makes it easier for your company to go from “random acts of sustainability” to true capability to deliver consistent, high quality sustainability to your clients. Many organizations have some programs and successes but need a sharper focus, measurable goals, and a strategic implementation plan. As a respected 3rd party, we can help streamline the process and provide that outside push needed to keep efforts on track. We help companies align their mindset, culture, and capability to achieve better performance and profitability.