"We believe that designing and building DOE Zero Energy Ready Homes promotes stewardship of our natural resources."
Builder
Key Features
- Walls: 2x4, 24" o.c. + Larsen truss, R-48 total: advanced framed walls with 3.5" blown fiberglass, 7/16" coated OSB taped, TJIs with 9.5" dense-packed fiberglass held by breathable membrane, 2x4 horizontal furring behind vertical Western Red Cedar.
- Roof: Vaulted ceilings with scissor truss, 5/8" coated OSB sheathing with taped seams, high-temperature underlayment, standing-seam metal roof, Cool Roof-certified.
- Attic: Vented R-76 total: two layers R-38 fiberglass batt in bottom cord of scissor truss.
- Foundation: Slab on grade: 12" R-48 EPS under slab, 9.5" R-38 EPS at slab edge. 10-mil poly vapor air barrier.
- Windows: Triple-pane, argon, low-e, aluminum-clad wood, awnings, U=0.147, SHGC=0.33.
- Air Sealing: 1.49 ACH50, continuous air barrier from below slab to peak of roof: under-slab barrier connected to wall and ceiling membrane with tapes and sealants, all holes sealed.
- Ventilation: ERV, MERV 8 filter, 131 CFM, 157 Watts, 78% SRE.
- HVAC: Ducted mini-split heat pump, 2.9 COP, 17 SEER. Passive solar design.
- Hot Water: Heat pump water heater, 66-gal, 3.35 COP. All hot water lines insulated to R-4.
- Lighting: 100% LED, large floor-to-ceiling windows for daylight.
- Appliances: ENERGY STAR refrigerator, dishwasher, 4 ceiling fans, exhaust fan, water heater.
- Solar: 11.5 kW, rooftop panels.
- Water Conservation: Low-flow fixtures, compact plumbing design, PEX piping.
- Energy Management System: N/A
- Other: EV charging; accessible shower, doors, and floorplan.
Building Specifications
Conditioned Area |
2,001
ft2
|
Bedrooms |
3
|
Bathrooms |
2
|
Stories |
1
|
Climate Zone |
5A
|
Completion Date |
January 2021
|
Modeled Performance
|
With PV
|
No PV
|
HERS Index |
-25
|
30
|
Annual Energy Cost |
$200.00
|
$1,450.00
|
Annual Energy Cost Savings |
$5,100.00
|
$3,900.00
|
Annual Energy Savings |
28,400 kWh
|
14,100 kWh
|
First 30 Years Savings |
$207,300.00
|
$157,900.00
|