I ordered the 733 Vornado Air Circulator because our AC was cooling the house unevenly. The bedrooms (with vents almost completely shut) were freezing, while the living room and kitchen were burning hot. The AC also ran non-stop. I put the Vornado in the hall, pointed it toward the living room and within minutes you could feel a difference. The living room cooled and eventually the AC shut off! Now we alternate between putting it in the hall or sitting it in the living room. We like it in the living room (and another fan in hall) because it circulates the air so well. It is so powerful that when tilted back it makes the ceiling fan spin. The fan is on a vaulted ceiling and the blades spin even tho it is turned off. It's amazing! The Vornado is very quiet in low mode but a little loud (not bad) in the higher settings. I have purchased Vornado heaters as well and the customer service is wonderful. That's another reason I keep coming back.