Mine unit is 1.5hp inverter NKH, installed at master room. I set air cond to run at 25c, then using a digital temperature sensor to test a room temperature. The lowest i can get is 26.9c, 46% humidity.
So does it mean compressor keep working hard to reach 25c? In that case, sounds like not much saving for inverter unit.

Just for sharing info.

Inverter:
                - low starting power/current
                - not chilling cold
                - good and electricity saving in confined closed room
                - expensive controller, conpressor and spare parts
                - lots of added fancy feature for marketing purposes

Non inverter:
                - high starting power/current before it stable
                - chilling cold
                - can't save much electricity because if compressor turning on/off frequently
                - cheap maintenance and spare parts (compressor seldom breakdown)
                - best use in living room or open room where air flow will leak out easily

Therefore the choice between inverter and non-inverter depend entirely on user needs