 Now, this is not an air conditioning system. So once it gets warm enough outside that you say, hey, it's getting to be about 75 degrees out, stop running the fan. Go turn it off. Or if you know that you're going to run it for two, three hours because you've got to leave and you're not going to be back, then just set it for that and it'll turn off when you're not there. It doesn't run continuously. It also doesn't run automatically.