This tutorial discusses unnecessary hours spent on unmet hours. This lesson applies to any energy modeling or building simulation software, not just TRACE 700. In the video we discuss an example for a classroom and storage closet scenario, with a thermostat in the corner. The storage closet has an exterior wall, its the only wall, and both rooms have a 75 degree set point. This wouldn't happen in real life, because the classroom is going to have a different load profile than the storage closet, and the storage closet needs much more conditioning than the classroom. So what are the potential solutions? The simplest thing is to combine two rooms into 1 zone and therefore minimize the effects of the exterior wall on just the storage closet. We could assume the storage closet has enough doors or a fan so the air is adequately mixed between the two rooms. However, sometime this is not a good option, because you don't want to delete rooms since you already made templates if your lighting density is different. We propose changing the setpoint in the storage closet. The storage closet is never going to have a 75 degree setpoint in reality, so your initial assumption of the 75 degree setpoint is wrong. That's ok because nobody is going to care if the storage closet is a few degrees below the classroom. To minimize the difference in the storage closet we want to add a partition between the two rooms. This causes any heat differential to immediately be seen by the classroom and the storage closet, and the classroom will immediately begin to condition the storage closet, thereby reducing unnecessary unmet hours.