Say we have two days in a row, identical conditions (temp/humidity/thermostat set points, etc.) From purely an electrical consumption standpoint, which situation is better (assume "sleep" and "wake" was set at 73 degrees in both scenarios):
1) have leave setback to 78 degrees begin at 5:30 am knowing that at x:xx time that afternoon, a/c will begin cycling on.
2) have the leave setback to 78 degrees begin at 4:30 am knowing that at x:xx time that afternoon (presumably earlier than in case 1) a/c will begin cycling on.
In case 2, I would assume the temperature difference between indoors and outdoors, although not greater at any identical time between cases, the a/c would run longer. In case 1, the a/c would likely short cycle more in the morning, making it less efficient.
Is that correct thinking? Is it different for say a single stage a/c vs. a dual stage a/c? Could a dual stage a/c actually use less power in case 2 conditions than in case 1?
Most importantly, where is my logic flawed?