| 2000 sf super insulated in Bozeman | ||||
| Design Temperature | Degree Days | Fuel | Fuel Cost | Furnace Efficiency |
| -20 F | 8100 F-day | Nat Gas | $1.20 per Therm | 80% |
| Element |
UA (BTU/hr-F) |
Design Loss ( BTU/hrr) |
Year Loss (Million BTU/yr) |
Fuel Cost (US dollars) |
Ten Year Cost (10% fuel price inflation) |
Greenhouse Gas (lb CO2) |
| Ceilings | ||||||
| Walls | 800 | |||||
| Windows | 167 | |||||
| Floors | ||||||
| Slab | ||||||
| Infiltration | ||||||
| Total | 1429 | |||||
| Internal Gains |
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