text:  Cook said you can set your thermostat for a lower temperature, but it might not help. You'll end up spending more money in the lot. Well, of course you're going to spend more money. Well, okay. So I've had AC techs tell me this a few times. And then one actually told me the truth. I'm sure there are others that would do that. And that is, well, that assumes that your house has poor insulation.