Are you looking at ratings on heating and air systems? Trying to understand it all? And you found a system that says up to a certain sear rating sear being seasonal Energy Efficiency ratio. And of course, that's just a number that the government attaches to the system. So that way homeowners folks that are not actually in the industry can kind of tell the difference between two systems. The gas mileage, if you will, on that heating and air system.


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