This fan is awesome, yes it's a little louder.........hardly noticeable, but more so that the five blade. This fan is the same diameter 20" seven blades, but has 2.75 pitch or depth compared to the five blade of 2.25(which those two other 7 blade fans were 2.25 pitch like the five blade) This thing cycles from 208(which it varies) sitting in my garage after coming back from a drive and once engaged it will drop to 183 right above the thermostat every time.