"The Groton" Model

23 Coppersmith Way, Townsend, MA

Walls and Roof

Subslab assembly

2" rigid, R-10
Subslab R-value 10.0
Slab edge assembly

2" rigid, R-10
Slab edge R-value 10.0
Foundation wall assembly

3.5" closed cell foam, R-20
Foundation wall R-value 20.0
Above grade wall assembly

12" open cell foam, R-46.8 cavity
Above grade wall R-value 46.8
Flat attic assembly

18" cellulose, R-67
Flat attic R-value 67.0

Windows and Doors

Window Assembly:

Windows U-value of 0.20, SHGC of 0.26

Average window U-factor 0.20
Solar Heat Gain Coefficient 0.26

Mechanical Systems

Space cooling - Manufacturer & Model 2 Mitsubishi mini splits, MSZ-FE12NA indoor units, MUZ-FE12NA outdoor units
Space heating - Manufacturer & Model 2 Mitsubishi mini splits, MSZ-FE12NA indoor units, MUZ-FE12NA outdoor units
Domestic hot water - Manufacturer & Model Navien 180, 98% efficient
Ventilation - Manufacturer & Model Fantech 1504 HRV
Lighting Manufacturer and Model Compact florescent
Lighting Efficiency