Derek Cole explains why big thermostat drops while you're away backfire: your home's walls and furniture stay warm all day, so the system can't cool down fast enough when you get back. Set it only 1-2 degrees lower instead to save energy without the lag.
That's kind of why I'm against, I'm against setting it back too much when you're going to work. But the problem is, you know, you get home at 5 o'clock or 5:30 and everybody tries to bring it down to the temperature they want. Well, it's been sitting all day at 78 degrees. It's going to be hard for it to get to 75 when it's the hottest part of the day at 4 or 5 o'clock. So that's why I'm, you know, I wouldn't set it more than probably 1 or 2 degrees off of what you want just because it's going to be hard for that to compensate for what you're wanting when you get home, if that makes sense. Because everything in the home— so you set your temperature to 78, you come home at 5 o'clock, you want to be 75. Okay, everything in the home, the desk, the furniture, the walls, everything is 78 degrees. So now everything has to be 75 degrees.
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