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Both calculators run independently — change the inputs on either side to compare results.

Heat Exchanger Effectiveness Calculator

Calculate the maximum possible heat transfer rate for a heat exchanger given fluid flow rates, specific heats, and inlet temperatures. Used when sizing or auditing industrial heat exchangers and HVAC coils.

Hot Fluid Inlet Temperature (°C)

Cold Fluid Inlet Temperature (°C)

Hot Fluid Mass Flow Rate (kg/s)

Cold Fluid Mass Flow Rate (kg/s)

Hot Fluid Specific Heat (J/kg·K)

Cold Fluid Specific Heat (J/kg·K)

Fill in the required fields to see your result.

Thermodynamics

Coefficient of Performance Calculator

Calculates the Coefficient of Performance (COP) for heat pumps and refrigerators. Use it to evaluate how efficiently a heating or cooling device converts electrical work into heat transfer.

Heat Output/Removed (W)

Work Input (W)

Fill in the required fields to see your result.

Key differences

	Heat Exchanger Effectiveness Calculator	Coefficient of Performance Calculator
Category	Thermodynamics	Thermodynamics
Inputs required	6	2
Result	Maximum Heat Transfer Rate (W)	Coefficient of Performance
What it does	Calculate the maximum possible heat transfer rate for a heat exchanger given fluid flow rates, specific heats, and inlet temperatures. Used when sizing or auditing industrial heat exchangers and HVAC coils.	Calculates the Coefficient of Performance (COP) for heat pumps and refrigerators. Use it to evaluate how efficiently a heating or cooling device converts electrical work into heat transfer.