Calling this rugged yet whisper-quiet machine a "fan" is like calling the Queen Mary a "rowboat." Fans can move air around, but the 710W uses Vornados exclusive, room-penetrating vortex action to incite the air in every part of the room into steady, continuous motion. So while you might have to stand right in front of a fan in order to feel much cooling, this unit surrounds the entire room (and everyone in it) in comfort. A combination of aerodynamic elements combines to produce this remarkable effect: an inlet air accelerator to increase air velocity and projection, deep-pitched blades to take big bites of air, a propeller guide to improve efficiency, and a special airTensity grill to focus air in a tight beam that can travel up to 75 feet. The most powerful in Vornados Essential line, the 710W outperforms other high-output models by as much as 30%. Yet all this air-circulating power comes in a sleek, compact package thats small and stylish enough for home or office, yet tough enough for garage or shop. The 710Ws usefulness doesnt end along with summer. Its great for exchanging air between rooms or up or down stairs, and can significantly reduce energy costs when used in winter, to distribute heat throughout the room, or even when used to supplement central air conditioning. Three-speed control addresses any circulation need, and the yoke-style steel base provides 360-degree directable airflow, adjusting to aim air at any angle you need. The grill removes for convenient cleaning. Designed and built in Andover, Kansas, the Vornado 710W is covered by a lifetime warranty. --Mary Park