The SEER2 rating is the updated industry standard used to measure the seasonal energy efficiency of air conditioning systems. This new metric accounts for higher external static pressure, providing a more accurate reflection of real-world performance. When browsing our Shop All Ducted collection, you will see SEER2 ratings that help you compare the cost-effectiveness of different models. A higher rating directly translates to less energy consumption and a smaller carbon footprint for your household. Many of our Sophia Series units boast impressive SEER2 scores that exceed federal requirements. Understanding this rating is crucial when selecting a system that will save you money over its 10 to 15-year lifespan. It is often a key factor for homeowners looking to qualify for federal tax credits under the Inflation Reduction Act (IRA). We always recommend checking the Technical Data for the specific SEER2 rating of your chosen unit.