Why I didn't see Brenndatomu's more concise reply on this thread, before I offered mine -I do not know. But we're thinking the same thing.Could be, you shouldn't believe everything you read in the marketing materials. Also, could be, that was recorded at the optimum static pressure in your output ducting. If that's low, the power required to run the blower motor will go up. Nothing wrong with that, really, as you'll be circulating more air, but it will affect the power draw from the blower motor. Kind of like the difference of running the blower on medium vs. high.