Tim Miller Construction Inc.
This page illustrates the actual utility expenses of the model S.E.E.F.I. home. Although a 4000 square foot Green Home may be larger than your project, these charts will give you some idea of monthly savings. 4000 sq. ft cooled, 5000 sq. ft heated.
Air Source Heat Pump Data (Air Conditioner that also creates Heat).
| Date Range | Days | Total Bill | Avg. Cost/Day | ASHP Cost | ASHP Avg. Cost/Day | Avg. Cost/Day/Sq. Ft. (4000 sq. ft.) |
| 2006 Average | 364 | $ 1,993.69 | $ 5.48 | $ 196.98 | $ 0.54 | $ 0.00135 |
| 2007 Average | 363 | $ 1,959.39 | $ 5.40 | $ 240.26 | $ 0.66 | $ 0.000165 |
| 2008 | ||||||
| 1-14 to 2-14 | 31 | $ 153.00 | $ 4.94 | $ 19.22 | $ 0.62 | $ 0.000155 |
| 2-14 to 3-15 | 30 | $ 158.00 | $ 5.27 | $ 6.61 | $ 0.22 | $ 0.000055 |
| 3-15 to 4-15 | 32 | $ 162.37 | $ 5.27 | $ 10.62 | $ 0.33 | $ 0.000083 |
| 4-15 to 5-16 | 31 | $ 138.00 | $ 4.45 | $ 8.91 | $ 0.29 | $ 0.000072 |
| 5-16 to 6-15 | 30 | $ 147.00 | $ 4.90 | $ 12.98 | $ 0.43 | $ 0.000108 |
| 6-15 to 7-15 | 30 | $ 188.00 | $ 6.27 | $ 2.30 | $ 0.08 | $ 0.000019 |
| 7-15 to 8-14 | 30 | $ 179.00 | $ 5.97 | $ 13.92 | $ 0.46 | $ 0.000116 |
| 8-14 to 9-15 | 32 | $ 206.00 | $ 6.44 | $ 40.00 | $ 1.25 | $ 0.000313 |
| 9-15 to 10-15 | 30 | $ 173.00 | $ 5.77 | $ 11.98 | $ 0.40 | $ 0.000100 |
| 10-15 to 11-15 | 31 | $ 192.00 | $ 6.19 | $ 28.03 | $ 0.90 | $ 0.000226 |
Liquid Petroleum Gas Data.
| Date of Fill | Days | Gallons Purchased | Price/Gallon | Total Cost | Avg. Cost/Day | Avg. Cost/Day/Sq. Ft. @ 5000 sq. ft. |
| 2006 Average | 405 | 1815 | $ 1.53 | $ 2,783.34 | $ 9.89 | $ 0.00198 |
| 2007 Average | 365 | 1506.5 | $ 1.84 | $ 2,784.28 | $ 7.63 | $ 0.001526 |
| 1-30-08 | 35 | 335.4 | $ 2.30 | $ 771.08 | $ 22.03 | $ 0.004406 |
| 3-5-08 | 55 | 368 | $ 2.40 | $ 845.80 | $ 15.38 | $ 0.003076 |
| 4-29-08 | 198 | 312.6 | $ 2.50 | $ 750.41 | $ 3.79 | $ 0.000758 |
| 11-13-08 | 36 | 295.8 | $ 2.40 | $ 697.79 | $ 19.38 | $ 0.003877 |
| 12-16-08 | 326.6 | $ 2.40 | $ 770.45 | |||