Cover Model

  The Brownsberger two-family in Belmont is the cover model for the January 2013 issue of Home Energy Magazine. For the second year in a row we have achieved total building energy use roughly 85% below (i.e., 15% of) the New England per person average, below Thousand Home Challenge Levels. Read the full text of […]

Life Cycle Assessment (LCA) of the Brownsberger Deep Energy Retrofit (DER) project

What is the net environmental impact of a deep energy retrofit (DER)? We know that adding insulation, a more efficient furnace, modern windows and leak sealing foam to an older house will reduce the energy required to maintain a given temperature. We can calculate the cost savings and GHG reductions. But what of the environmental […]