Modern Issaquah Neighborhood, WA

TC Legend Positive Energy Home Bellingham, WA
Washington
Project Type Residential | Single Family > 3000 sf
Year Completed 2018
Project Size 1040 sq ft
SIPS Used 6" GPS Walls & 10" GPS Roof
Sustainable Features Premier SIPS, Net-Zero, Positive Energy, Low VOC Interior Paint
Environmental Certifications LEED/USGBC
Architect TC Legend Homes
Contractor TC Legend Homes
Project Overview
- Energy Star Certified New Home
- Washington Built Green - Highest 5-Star Status
- EPA Indoor AirPLUS Qualified Home
HERS Index: -25
Blower Door Test: ACH 0.57
Energy Use: Estimated energy use annually -10.5 MMBtu
HVAC:
- Electric air source heat pump, high-efficiency mini-split/Electric Htg.: 14.2 HSPF. Clg: 33.0 SEER
- Ventilation: Exhaust only: 50 cfm, 33.0 watts
- Thermostat: Programmable heating and cooling
Energy-Saving Materials / Energy-Efficient Products or Design Elements:
- Triple-Pane Windows, U-Value: 0.180, SHGC: 0.300
- Solar Array
- Under Slab Insulation, R-20 under & R-20 Edge Slab
- Passive Solar Orientation
- Water heating via heat pump/electric, 2.7 EF, 50 Gal
- Radiant flooring
Solar Panels: Photovoltaics estimated at an annual energy consumption of -27.2 MMBtu/yr (or -$675.00)
Other Information:
- This home generates enough energy to power the owner's electric car!
- GPS insulation core for increased efficiency.
- Annual energy cost for all operations is $-176
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