Simple Payback & ROI Calculator

Project Costs & Savings

Equipment / Project Cost ($)

Annual Energy Savings (kWh/yr)

Electricity Rate ($/kWh)

O&M Savings ($/yr)

Utility Incentive / Rebate ($)

Financial Parameters

Analysis Period (years)

Discount Rate (%)

Financial Results

Annual $ Savings

—

$/year

Simple Payback

—

years

NPV (Discounted)

—

Lifetime Savings

—

$ undiscounted

Cumulative Cash Flow by Year

Year	Annual Savings	Cumulative Savings	Net Position	Discounted NPV

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Do the full calculation in AIM Works

This calculator handles one step. AIM Works runs the complete MEP design workflow — thermal load calculations, duct & pipe networks, equipment selection, code compliance, and an AI design assistant — in one tool.

✓ ASHRAE 62.1 ventilation + CLTD/CLF/RTS load methods
✓ Darcy-Weisbach pipe & duct network solvers
✓ ASHRAE 90.1 / IMC / NFPA compliance checks
✓ 20 free AI design messages included in trial

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