Chiller Efficiency Calculator


Calculating chiller efficiency is essential for optimizing energy usage in various industrial and commercial settings. Understanding the efficiency of chillers helps businesses reduce operational costs and environmental impact. This article provides a comprehensive guide on how to use a chiller efficiency calculator to determine the performance of cooling systems.

How to Use:

To use the chiller efficiency calculator, follow these steps:

  1. Input the required parameters such as entering the chiller’s cooling capacity (in tons), power input (in kilowatts), and entering the leaving chilled water temperature (in degrees Fahrenheit).
  2. Click the “Calculate” button to obtain the efficiency result.


The formula to calculate chiller efficiency is as follows:

Example Solve:

Let’s consider a chiller with a cooling capacity of 100 tons and a power input of 80 kW. The leaving chilled water temperature is 45°F.

Using the formula:


Q: What is the significance of chiller efficiency?
A: Chiller efficiency indicates how effectively a chiller converts energy into cooling, impacting operational costs and environmental sustainability.

Q: How can improving chiller efficiency benefit businesses?
A: Improving chiller efficiency can lead to reduced energy consumption, lower operational costs, and decreased carbon footprint.

Q: Are there any factors that affect chiller efficiency?
A: Yes, factors such as equipment age, maintenance, load variations, and ambient conditions can influence chiller efficiency.


In conclusion, using a chiller efficiency calculator allows businesses to assess the performance of their cooling systems accurately. By understanding and optimizing chiller efficiency, organizations can achieve cost savings and contribute to environmental sustainability.

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