Green Collar did an incredible job of, as I’ve grown fond of calling it, “fluffing up my home.” 14” of cellulose over every part of the attic they could access, pink panther damming up the rest, expandafoam sealing in double-reflective foam board… this has resulted in a literal halving of my utility bill, combined with a new high-efficiency furnace, and an additional level of comfort upstairs that just can’t be measured. If you have the chance to choose your Mass Save contractor, definitely go with Green Collar… they found opportunities to save money that resulted in my project total being less than half of what was originally projected!