Energy Efficiency Ratio (Eer)
The Energy Efficiency Ratio, or EER for short, is a metric used to compare the energy efficiency of different types of buildings or building management systems. The EER is calculated by dividing the amount of energy required to maintain a certain temperature in a space by the amount of heat that would be required to maintain the same temperature in that space if it were not for the presence of the building or system. In other words, the EER tells you how much more (or less) energy a building or system requires compared to what would be required without it.
The metric is most commonly used to compare the energy efficiency of different types of buildings or HVAC systems, but it can also be used to compare the efficiency of different types of building management systems. If you’re looking at two different BMS control systems and want to know which is more efficient, you can compare their EERs. The system with the higher EER is more efficient and will require less energy to maintain a given temperature than the system with the lower EER.
