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- If the PTAC uses a heat pump for heating, use BEopt's Mini-Split Heat Pump category. Otherwise, use BEopt's Room Air Conditioner category (in combination with Electric Baseboard if the PTAC uses strip heat).
- If you ask BEopt to autosize HVAC, it will calculate different sizes for each apartment. But if you hardsize the equipment, only a single size can be specified for all apartments. One option is to do two runs, 1 with 3/4 ton and 1 with 1 ton, and then combine outputs for the two runs by looking at unit-specific outputs. There is a dropdown on the output screen where you can see outputs on a unit-by-unit basis instead of the entire building.