Shorten an air-conditioning schedule by two hours
A renter compares an eight-hour cooling window with a six-hour window for the same bedroom unit. The comparison holds compressor power and duty cycle steady to isolate the shorter schedule.
Open CalculatorInputs and calculation
| Tool input | Value |
|---|---|
| Currency | USD |
| Power unit | W |
| Power | 1200 |
| Hours per day | 8 |
| Days or equivalent sessions | 30 |
| Duty cycle (%) | 50 |
| Energy price (USD per input kWh) | 0.25 |
| Alternative power (W) | 1200 |
| Alternative hours per day | 6 |
| Alternative duty cycle (%) | 50 |
Baseline: 1200 ÷ 1,000 × 8 × 30 × 50% = 144 kWh. Alternative: 1200 ÷ 1,000 × 6 × 30 × 50% = 108 kWh. Multiply both by 0.25; the baseline minus the alternative is USD 9.00.
Modeled difference · USD 9.00
What the comparison shows
The model drops from 36.00 to 27.00. Two fewer scheduled hours translate to one fewer compressor hour per day under the assumed duty cycle.
Assumptions and limits
Both runs assume the compressor draws the same power and runs for half the scheduled time. Actual duty can change with weather and time of day.