 Now, the other thing is you can turn on if you've got an air conditioner. Let's say it's a window air conditioner or a portable unit or even your HVAC system. If you want to pre-cool your house to try to get ahead on those hot days, maybe turn it down to 65 degrees. Turn it down a little bit and get that temperature down. So that way in the heat of the day when it can't catch up or can't get that close.