Hillside Residence
Net-Zero Ready House in Northern Vermont
Walls and Roof
Super-insulated envelope. Air tightness tested by fog machine and blower door.
| Subslab assembly |
Rigid foam |
|---|---|
| Subslab R-value | 24.0 |
| Slab edge assembly |
Rigid foam separating the concrete floor slab from the concrete walls |
| Slab edge R-value | 14.0 |
| Foundation wall assembly |
Concrete walls |
| Foundation wall R-value | 24.0 |
| Above grade wall assembly |
2x6 studs filled with blown cellulose; Zipp system sheathing taped; two 2" layers of foam, joints offset and taped; vertical strips; siding. |
| Above grade wall R-value | 42.0 |
| Cathedral ceiling assembly |
Scissors trusses blown full of cellulose; Zipp roof sheathing with joints taped; two 2" layers of foam, joints offset and taped; nailing surface; metal roofing. |
| Cathedral ceiling R-value | 95.0 |
| Roof Assembly |
See above. |
| Roof R-value | 95.0 |
Windows and Doors
Window Assembly:
Intus PVC windows and doors, triple-glazed
Door Assembly:
Intus PVC windows and doors, triple-glazed
| Average window U-factor | 0.12 |
|---|---|
| Solar Heat Gain Coefficient | 0.49 |
| Visible Light Transmittance | 0.71 |
| Door U-Factor | 0.20 |
| Door Area | 77 sq ft |
Mechanical Systems
| Space cooling - Manufacturer & Model | First/Second Floor Heat Pump - Mitsubishi MSZ-FE18NA (indoor) plus MUZ-FE18NA (outdoor), Basement Heat Pump - Mitsubishi MSZ-GE09NA-8 (inside) plus MUZ-GE09NA (outside) |
|---|---|
| Space cooling - capacity | 18,000 kW, 9,000 kW |
| Space heating - Manufacturer & Model | First/Second Floor Heat Pump - Mitsubishi MSZ-FE18NA (indoor) plus MUZ-FE18NA (outdoor), Basement Heat Pump - Mitsubishi MSZ-GE09NA-8 (inside) plus MUZ-GE09NA (outside) |
| Space heating - capacity | 6 kW |
| Domestic hot water - Manufacturer & Model | Steibel Eltron Accelera 300/WHP 300 |
| Domestic hot water - capacity | 80 gal |
| Domestic hot water - efficiency | 2 kW |
| Ventilation - Manufacturer & Model | Fantech VHR 1405R |
| Lighting Manufacturer and Model | |
| Lighting Efficiency | |
| Mechanical Equipment Installation Details and Comments |
Blower door test and tracking with eMonitor |
Envelope
| Air Changes per hour, ACH50 | 0.40 ACH50 |
|---|---|
| Air Changes per hour, CFM50 |