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Without getting into too much detail, the BEopt HVAC options currently require a lot of detailed inputs to determine the efficiency of the equipment in the EnergyPlus simulation. EER/COP inputs are indeed used in conjunction with SEER/HSPF, rated fan power, etc. You can see how the EnergyPlus inputs change when you vary the BEopt inputs.

We recognize that these inputs can be very challenging for a user to obtain and make it hard to create new BEopt options. With BEopt v3 (beta to be released in mid-December), we are greatly reducing the number/complexity of inputs required.

For example, an air conditioner in BEopt v2 requires:

• Number of Speeds
• Rated SEER
• Installed SEER
• EER(s)
• Rated SHR(s)
• Capacity Ratio(s)
• Fan Speed Ratio(s)
• Rated Fan Power
• Installed Fan Power
• Crankcase Power/Temperature

In BEopt v3, the only required inputs will be:

• Number of Speeds
• Rated SEER
• Rated SHR
• Fan Power (can be defaulted)