Hi<br><br>Thanks to David and Matt, you messages have helped me a lot. Now I know how to use type 24 & 25 to get monthly summary. <br><br>At this time I have some other questions:<br>1. When Editing type 56, in the Ventilation lable, the Heating and Cooling option can be set up by defining airchange rate and temperature & RH of air flow; while in both the Cooling lable and Heating lable, the cooling and heating option can be set up by defining cooling / heating power (does that mean I need to estimate the cooling / heating load before set this block up?), and the setpoint temperature & RH. As a result, type 56 provides two methods to define HVAC system. What's the relationships between the two methods?. <br>
<br>2. In addition to adding the information of HVAC in type 56, do I need to creat the HVAC system in to get the information of energy consumption of HVAC system?<br><br>Thanks!<br><br clear="all"><br>-- <br>Chou Shen<br>
Graduate Research Assistant<br>Department of Civil, Architectural & Environmental Engineering<br>Missouri University of Science and Technology<br><br><br><br>