Ok I found the spec sheet. The bottom entry 6 year base model is 91 watts standing loss. The top entry 6 year base model is 91 watts. the 6 year top entry comfort smart model is 75 watts. the 9 year top entry base model is 75 watts. Looking at the measurements the 9 year and the comfort smart models are both larger in dimension which probably means more insulation...
So there is no real gain by going to a bottom entry. Our government is just legislating the really inefficient ones out which is a shame because the price difference between a 6 and a 9 year was close to $150 but the insulation difference can easily be made up for $50.
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