Mechanic Street Passive House
An Affordable, Replicable Passive House
Walls and Roof
This project was designed to meet the PHIUS+ standards, with a robust thermal envelope and simple shape for affordability and constructability.
Subslab assembly
Exposed concrete slab with 6" EPS.
Subslab R-value
25.2
Slab edge R-value
16.8
Above grade wall assembly
Double Stud wall. 2x6 outer, 3" gap, 2x4 inner. 4" closed cell foam Lapolla Foam Lok 2000-4g, 8" blown in fiberglass.
Above grade wall R-value
56.0
Roof Assembly
Truss filled with 24" blown in cellulose.
Roof R-value
91.7
Windows and Doors
Window Assembly:
Schuco PVCU, Triple glazed
Door Assembly:
Schuco
Average window U-factor
0.13
Solar Heat Gain Coefficient
0.50
Mechanical Systems
Space cooling - Manufacturer & Model
Daiken Quaternity FTXG12HVJU indoor & RXG12HVJU outdoor
Space heating - Manufacturer & Model
Daiken Quaternity FTXG12HVJU indoor & RXG12HVJU outdoor
Domestic hot water - Manufacturer & Model
GE Geospring Heat Pump Hot Water Heater
Domestic hot water - capacity
80 gal
Ventilation - Manufacturer & Model
Zehnder ERV ComfoAir 350
Lighting Manufacturer and Model
Lighting Efficiency
Envelope
Air Changes per hour, ACH50
0.02 ACH50
Air Changes per hour, CFM50
An Affordable, Replicable Passive House
Walls and Roof
This project was designed to meet the PHIUS+ standards, with a robust thermal envelope and simple shape for affordability and constructability.
| Subslab assembly |
Exposed concrete slab with 6" EPS. |
|---|---|
| Subslab R-value | 25.2 |
| Slab edge R-value | 16.8 |
| Above grade wall assembly |
Double Stud wall. 2x6 outer, 3" gap, 2x4 inner. 4" closed cell foam Lapolla Foam Lok 2000-4g, 8" blown in fiberglass. |
| Above grade wall R-value | 56.0 |
| Roof Assembly |
Truss filled with 24" blown in cellulose. |
| Roof R-value | 91.7 |
Windows and Doors
Window Assembly:
Schuco PVCU, Triple glazed
Door Assembly:
Schuco
| Average window U-factor | 0.13 |
|---|---|
| Solar Heat Gain Coefficient | 0.50 |
Mechanical Systems
| Space cooling - Manufacturer & Model | Daiken Quaternity FTXG12HVJU indoor & RXG12HVJU outdoor |
|---|---|
| Space heating - Manufacturer & Model | Daiken Quaternity FTXG12HVJU indoor & RXG12HVJU outdoor |
| Domestic hot water - Manufacturer & Model | GE Geospring Heat Pump Hot Water Heater |
| Domestic hot water - capacity | 80 gal |
| Ventilation - Manufacturer & Model | Zehnder ERV ComfoAir 350 |
| Lighting Manufacturer and Model | |
| Lighting Efficiency |
Envelope
| Air Changes per hour, ACH50 | 0.02 ACH50 |
|---|---|
| Air Changes per hour, CFM50 |