The owners are long time Boston residents who understand the need for big changes in energy use in Boston and beyond. When it became clear their old wood singles needed replacement, the anticipated paint job became a much bigger and exciting endeavor. Upon learning about the about the National Grid DER pilot program, they were eager to become the first three-family Deep Energy Retrofit in Boston and a case study for other homeowners and landlords.

The super-insulated enclosure, made possible through financial and technical support from National Grid and Building Science Corporation, includes an exterior insulation wall build-out. Challenged by a slate roof, Byggmeister opted to insulate the roof from the inside with interior cellulose and foam to meet the program's high insulation requirements while leaving the slate intact. Separate heat recovery ventilators in each unit will lower energy use, improve indoor air quality and eliminate cross-contamination between units.

Paul Panish was the energy consultant on this project, which is expected to be completed in June, 2011. 

National Grid has published a case study, available here.

A portfolio of our Deep Energy Retrofit work, complete with 'all the numbers' is available here

Home Energy Magazine Article on Deep Energy Retrofits (DER) January 2, 2013 - Paul Eldrencamp and Mike Duclos collaborated on the three Deep Energy Retrofits described in the Jan/Feb 2013 Home Energy Magazine article available here, which include this project.