I just wanted to know how to work the timer on it and also was curious to find out the best way to keep my electric bill down and run airconditioner . Some people have told me it is better to leave the air conditioner on ALL the time set at 72. Others have said to turn it on only when it gets too warm in the house. Is there any truth if you turn it on and off just to cool the house takes MORE electricity than leaving it on ALL the time set at 72?