SEER (Seasonal Energy Efficiency Ratio) measures the cooling efficiency of air conditioners and heat pumps over a typical cooling season. SEER2 is a new standard introduced in 2023, which uses the same formula but under different test conditions to better reflect real-world performance.
The formula to convert SEER to SEER2 is:
\[ \text{SEER2} = \text{SEER} \times 0.955 \]
Consider an air conditioner with a SEER rating of 15:
Using the formula:
\[ \text{SEER2} = 15 \times 0.955 = 14.33 \]
This means the SEER2 rating is 14.33.