PowerEngineerLab · TOOL-015
Appliance Replacement Payback Calculator
Compare user-entered energy, maintenance and net replacement cost assumptions.
02 / Result
Simple replacement payback
Enter existing and replacement energy, cost, maintenance and tariff.
Method and boundaries
Annual cost savings = (existing annual kWh - replacement annual kWh) × tariff + existing maintenance - replacement maintenance. Payback = net replacement cost ÷ annual savings when positive.
Net replacement cost is entered after subsidies and residual value. Equipment life, escalation, taxes, financing, utility rules and code compliance are not inferred.
Method and boundaries
Annual savings = (old annual kWh - new annual kWh) × tariff + old maintenance - new maintenance. Simple payback = net replacement cost ÷ annual savings when positive.
Net cost is user-entered after incentives and residual value. Equipment life and code compliance are not inferred. SRC-010 · model 1.0.0 · user-input-v1.