What does the energy efficiency ratio measure?

The energy efficiency ratio measures how effectively energy is consumed by appliances, specifically in terms of their output relative to their energy input. This ratio indicates how much cooling or heating output is generated for each unit of energy consumed, making it a crucial metric for evaluating the efficiency of HVAC systems and similar appliances. A higher energy efficiency ratio signifies that an appliance uses energy more effectively, resulting in lower operating costs and reduced environmental impact. This focus on effective energy consumption is essential for consumers looking to save on energy bills, as well as for promoting more environmentally sustainable practices.