Green features.
This house is without
a doubt one of the 'greenest' houses in the whole metropolitan DC area. One defining charcteristics of
McMansions is their profligacy with space and resources. This house brings green construction into the upscale mainstream.
Features include:
Active Solar
•
Photovoltaic solar at the main house (10 kW, the maximum allowable with net metering)
• Water heating at the
accessory building for pool (no supplimental heat is used)
Passive Solar
•
South-facing orientation
• Few windows on north, east, and west elevations
• Properly designed
overhangs shade glass in summer
• Sun porch designed to produce and store winter heat
Super insulation
• 2x6 exterior walls with Icynene sprayed in rigid foam insulation
•
R48 in attic
• Insulated floor slabs
• Insulated below grade exterior walls
Energy Star rated
• Galvalume roof is the only roof energy star rated (for heat reflectivity)
•
Appliances
• Halogen lighting dimmed throughout
• Direct vent gas fireplaces at the interior
to maximize heat output and minimize infiltration
High efficiency heat pumps
•
High seer rating
• All ductwork runs in conditioned space
• Unusual residential installation
of an air-to-air heat exchanger
Efficient design
• Simple, compact shape
minimizes exterior surface and future maintanence costs
• No double height spaces
Landscape
• Integration of house and land to use all available space
• Minimal lawn, less
than 10% of the lot
• Permeable pavers-in-sand driveway
• Gravel rain garden and xeriscape-friendly
native plants