How is the Energy Efficiency Ratio (EER) calculated?

The Energy Efficiency Ratio (EER) is calculated by dividing the cooling output of an air conditioning unit, measured in British Thermal Units (BTUs) per hour, by the energy input, measured in watts per hour. This ratio provides a straightforward numerical representation of the cooling efficiency of the unit.

A higher EER indicates a more efficient system, as it shows that more cooling is produced for each unit of electrical energy consumed. This metric is essential for consumers and professionals in the HVACR industry, as it helps evaluate and compare the energy efficiency of different heating and cooling systems. Understanding EER contributes to better energy savings and reduced operational costs, which aligns with sustainable practices in HVACR.

The calculation thus directly correlates the output of the system to its energy consumption, making it a critical measure in assessing performance efficiency in cooling applications.