Originally Posted by
frank
If you consider that it is all right for an inverter driven condensing unit to just 'float along all day at low hertz' would you consider that a 14kW inverter driven system would be suitable for any size load up to 14 kW?
After all, it could easily deal with the heat gain and then just back off without stopping?
Inverter driven or not, a system should be selected as close as possible to the load it is designed to deal with. If it is too big then it will consume extra energy and may fail prematurely through excessive wear. Too small and it won't be able to deal with the load at peak periods.
Inverter drives haven't been designed to compensate for over sizing.