Chiller Efficiency Calculator

Chiller Performance Saving Estimate

Estimate kW/RT, COP, energy saving, and CO2 reduction

Use chilled water flow, temperature difference, and chiller power input to estimate current performance and screen potential chiller optimization or retrofit opportunities.

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Chiller Efficiency Calculator

Assess Chiller Performance and Savings

Estimate cooling load, current efficiency, annual operating cost, savings, and CO2 reduction against an editable target efficiency.

Preliminary chiller performance assessment

Enter measured chilled water flowrate, temperature difference, and chiller power input to estimate kW/RT, COP, annual energy use, and potential savings against a target/proposed efficiency.

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Customer and Chiller Details

Customer / company name * Contact person * Email * Phone number * Chiller type *

Chiller Operating Data

Number of chillers * Chilled water flowrate * Flowrate unit * Chilled water supply temperature (°C) * Chilled water return temperature (°C) * Chiller power input (kW) * Average operating hours per day * Operating days per year * Electricity tariff (RM/kWh) * Current baseline efficiency (kW/RT) Target / proposed efficiency (kW/RT) * Estimated investment / improvement cost (RM) (optional) Grid emission factor (kgCO2/kWh) *

Chiller performance estimate

Calculated Performance Summary

Target: -- kW/RT

Chilled water Delta T 0.00 °C

Cooling load 0.00 kW

Cooling load 0.00 RT

Current chiller power input 0.00 kW

Current efficiency 0.000 kW/RT

Current COP 0.00 COP

Target / proposed efficiency -- kW/RT

Target chiller power 0.00 kW

Current annual energy 0 kWh/year

Current annual electricity cost RM 0.00 per year

Target annual energy 0 kWh/year

Annual energy saving 0 kWh/year

Annual electricity cost saving RM 0.00 per year

Energy saving percentage 0.00% vs current energy

Annual CO2 reduction 0.00 tCO2/year

Simple payback period Not applicable years

This calculator provides preliminary chiller performance and saving estimation only. Actual savings should be verified through site measurement, calibrated instruments, chilled water flow verification, operating profile review, and a detailed energy audit.

For better accuracy, measurements should be taken when the chiller is operating under stable load condition.

Need a Detailed Chiller Audit?

DW Energy and Engineering can verify chilled water flow, temperature profile, power input, controls, and realistic improvement opportunities.

Assess Chiller Performance and Savings

Preliminary chiller performance assessment

Calculated Performance Summary

Interested to verify your chiller performance through an energy audit?

Need a Detailed Chiller Audit?