When new appliance fit recover im cost
Compare yearly energy savings with di extra purchase cost.
Your numbers
Yearly bill saving
Assume yearly energy use and electricity price remain constant. Payback cover energy savings only; maintenance, financing, resale and appliance lifetime no dey included.
Compare scenarios
You fit keep up to three snapshots for this tab. Loading one go replace the present inputs.
Formula
Use S = (Eₒ−Eₙ)p. Eₒ and Eₙ na old and new annual energy use for kWh, and p na price per kWh. S na annual bill saving; simple payback dey divide net replacement cost by positive saving.
Compare yearly energy savings with di extra purchase cost.
Example wey show the calculation
- Old yearly energy use (kWh)
- 500
- New yearly energy use (kWh)
- 300
- Electricity price for each kWh
- 0.25
- Net cost to replace di appliance
- 400
- Yearly bill saving
- 50
- Simple time to recover cost
- 8 years
Where e fit work and limits
Assume yearly energy use and electricity price remain constant. Payback cover energy savings only; maintenance, financing, resale and appliance lifetime no dey included.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: cae68ba4fadb · Example don get check: