text:  He says, what is that number? Because he said, I will design the system to get it to that point. So what happens with most builders when they're building houses? They don't know who's going to live in them. They don't know what the air conditioned level of that house is going to be desirable to the new owner. So they pick the standard number of 74 or 75 degrees as the coolant point and design the system to fit that.