SpecCalc Hub · Low
Appliance Energy Cost Calculator
Estimate appliance cost using quantity, rated power, duty cycle, runtime, and tariff.
Formula
effective_power_w = rated_power_w * quantity * (duty_cycle_percent / 100) energy_kwh = (effective_power_w / 1000) * hours_per_day * days cost = energy_kwh * tariff_per_kwh
Assumptions
- Inputs are user-provided.
- Results are preliminary estimates.
- Duty cycle approximates average operation.
Limitations
- Real appliance power can vary.
- Startup surge is not modeled.
Methodology
Uses effective average power from rated power and duty cycle.
This calculator provides an estimate for informational purposes only. It is not a certified engineering design, electrical safety approval, or professional installation recommendation. Always verify final decisions with a qualified professional and applicable local codes.