BEE Star ratings for air conditioners are based on energy efficiency parameters, including the Indian Seasonal Energy Efficiency Ratio (ISEER). The rating reflects how efficiently an AC delivers cooling across different seasonal operating conditions.
The calculation considers these factors
1. ISEER value
The ISEER value compares the total annual cooling output with the electricity consumed. A higher ISEER value indicates greater seasonal cooling efficiency.
2. Cooling capacity
The AC's cooling capacity is considered when assessing its efficiency and determining the applicable energy performance category.
3. Annual energy consumption
Estimated annual electricity consumption indicates how much energy the AC may use under specified operating conditions.
4. Operating conditions
The assessment considers varying cooling requirements and seasonal operating conditions instead of relying only on performance at one fixed temperature.
5. BEE criteria
BEE assigns the applicable Star rating based on prescribed efficiency thresholds and testing requirements for the relevant AC category.
The BEE Star rating therefore helps you compare the seasonal energy efficiency of different ACs. Check both the BEE label and ISEER value when evaluating an AC's energy performance.
→ Pro tip: When comparing two ACs, do not look at the Star rating alone. Check the ISEER value and annual energy consumption as well to understand their efficiency more closely.