THE DUBBEL
Multi-Family Residential
New Construction
2,200 SF
Philadelphia: Brewerytown
This two-unit, all electric building represents a balance between development cost and high-performance certification. Throughout the design process, simple detailing focused on replicability. The building is an efficient box with no projections or added appendages to reduce complexity and construction cost. Assemblies utilize common membranes and insulation to achieve a super-insulated, air-tight building. The project’s energy profile is optimized through the Department of Energy’s Zero Energy Ready Homes program, the first multi-family building in Philadelphia to attain this certification.
PROJECT STATS
U.S. Department of Energy (DOE) Zero Energy Ready Home
Building Metrics
Predicted Energy Use Intensity (pEUI): 18.32 kBtu/sf/yr
Home Energy Rating Score (HERS Index): 23
Airtightness: 0.27 ACH 50
Building Envelope
Slab On Grade: R-16
Below Grade Walls: R-15
Above Grade Walls: R-31
Roof: R-50
Building Systems
Power/Fuel Source(s): All electric
Heating & Cooling: Ductless mini-split heat pumps
Energy recovery ventilation
Domestic Hot Water: Heat-pump water heater
Appliances: Energy-Star
LED lighting
Solar ready
Project Team
Builder: Red Oak Development
Energy Verifier: DSB Energy
Structural Engineer: Larsen & Landis
Photography: Dave Apple