Bought ANS Cooling Fan 3000 today. Not That Noisy, Very Peacefull actually, My Air conditioner is much more noisier, Bring Downs 4 - 5 degrees c. Tested At night, W/O fan = 29.1 - 29.5, With Fan 25.5 - 26.3. (Dymax Digital Thermometer) Will test again 2morow afternoon. But will use other thermometer to check as i dont find Dymax thermometer is Accurate. The Fan May look small, but i think it much more cooler than my regular fan @ 2nd speed.