I've had this client for about six months and last week was the first time I noticed that I can feel steady airflow coming down all the flues( 1 waterheater, 2 furnaces). They had gotten new hood exausts last winter and must have been snookered into buying some oversized ones. Last week I had a exaust hood motor go belly up. I replaced it and the new one is running high on amps. Belt tension is ok, everything is lubed, wheel spins freely. They do have the hoods cleaned regularly, but I don't understand why one is running high and the one next to it isn't. The one running high is in the corner of the kitchen; the other is by the door. Would that make a differernce? Larger make up air is pretty much my only option here, right?