Record bills before and after an appliance replacement
A renter replaces a refrigerator at the start of June. Four simulated bills give two complete months on each side to compare.
Open TrackerInputs and calculation
| Month | Utility | Usage | Bill | Budget | Variance | Month change |
|---|---|---|---|---|---|---|
| 2025-04 | electricity | 360 kWh | 90 | 95 | -5 | — |
| 2025-05 | electricity | 400 kWh | 100 | 95 | 5 | 10 (11.1111%) |
| 2025-06 | electricity | 340 kWh | 85 | 95 | -10 | -15 (-15%) |
| 2025-07 | electricity | 348 kWh | 87 | 95 | -8 | 2 (2.3529%) |
Before: (360 + 400) ÷ 2 = 380 kWh/month. After: (340 + 348) ÷ 2 = 344 kWh/month. Average bills move from 95 to 86.
What the comparison shows
The post-change sample averages 36 kWh less. A meter reading at the refrigerator would help determine its specific contribution.
Assumptions and limits
The tracker uses whole-home bills. A change after replacement can reflect weather, occupancy or other appliances as well.