Building Power vs. Ambient Load
Indoor temperature change rate (°F/hr) grouped by outdoor temperature buckets.
System Tipping Points (Projected Balance Points)
| Metric |
Calculated Point |
Explanation |
| HP Thermal Balance Point |
38 °F |
The projected outdoor temperature where the Heat Pump fails to add heat faster than the house loses it (0 °F/hr recovery). |
| AC Thermal Balance Point |
88 °F |
The projected outdoor temperature where the AC fails to remove heat faster than the house gains it (0 °F/hr recovery). |
| Economic Balance Point |
Currently: Gas Furnace |
At $0.125/kWh and $0.63/CCF, gas costs ~$9.24 per 1M BTU vs the heat pump at ~$14.06. The HP COP would need to dynamically increase to beat gas. |
| Thermal Supremacy |
Gas Furnace |
With an ~64k BTU actual output vs the ~24k BTU Heat Pump, the gas furnace will always recover the house temperature faster. |