Issaquah Retreat
Building Use: Detached single-family residence
Project Type: New passive house building
Passive house retreat in the woods.
| State: | Washington | |
| Dwelling Units: | 1 | |
| PH Calculation Protocol(s): | PHIUS+ | |
| PH Modeling Software(s): | WUFI Passive | |
| PH Certification(s): | PHIUS | |
| Year Of Construction: | 2017 | |
Project Size | ||
| Floor Area: | 1,997.8 ft2iCFA | 185.6 m2iCFA |
Performance | ||
| Annual heat demand: | 4.75 kBtu/yr•ft2iCFA | 15 kWh/yr•m2iCFA |
| Heat load: | 2.57 Btu/hr•ft2iCFA | 8.1 W/m2iCFA |
| Annual cooling demand: | 0.64 kBtu/yr•ft2iCFA | 2 kWh/yr•m2iCFA |
| Cooling load: | 1.03 Btu/hr•ft2iCFA | 3.2 W/m2iCFA |
| Primary energy demand: | 42 kBtu/yr•ft2iCFA | 132.5 kWh/yr•m2iCFA |
| Airtightness: | 0.03 ft3/min•ft2 | |
Envelope | ||
| Construction Type: | wood | |
| Floor Assembly: | 5" slab + 10" EPS | |
| Wall Assembly: | 2 x 6 structural wall, 11 7/8" I-joist wall with blown-in cellulose | |
| Roof Assembly: | Truss roof with blown-in cellulose + 12" EPS | |
| Windows: | Cascadia | |
| Entry Doors: | Cascadia | |
Systems | ||
| Ventilation system: | Zehnder | |
| Heating/Cooling system: | Mitsubishi | |
Team | ||
| Passive House Consultant: | Maren Longhurst | |
| Passive House Consultant Certification: | PHIUS | |
| Architect: | Sam Rodell Architects | |
| Structural Engineer: | Sam Boydsten | |
| Mechanical Engineer: | Terry Downs | |
| Contractor: | Glenn Carter | |
Comments | ||