I am using York "Cooling King" model, 1HP in my room and my parents are using the 1.5HP Hitachi.
Personally I chose the Hitachi cause it was rather high in their cooling BTU unit and it does a good job in cooling down the big master bedroom in 10mins.

My York is rather powerful too, but only thing I have to comment is the fan at lowest speed is not as Whisper quiet, as Hitachi.

Umm, I dont know whether it's J-series.Have a look at the picture.


It was around RM 1K back years ago.
Model number: YWM10G-AMIAA
Cooling Capacity: 10,000 BTU

The outdoor compressor is rather compact in size.

I'll have a peek at the Hitachi later.

This post has been edited by SleeplessEyes: Feb 25 2009, 10:10 PM

On the average is 9000 BTUs, but of course higher is better.

Does test mean just use the "Normal mode"
Or the "Powerful Mode" on your Hitachi?
There is a noticeable difference in these 2 modes.

I tried the "Powerful Mode", the 2nd,green, button and it does cools down the room quickly,by feeling, not by exact temperature measurement.

Honestly, I dont even bother to "benchmark" the time it takes to cool down the room. I just trust the BTU cooling rating. Higher is always better.

This post has been edited by SleeplessEyes: Feb 26 2009, 05:17 PM

The air-conditioning unit only sense the air around it's indoor unit or at the evaporator coil.
Where you put your "room temperature" thermometer, it's a subjective matter.

And usually, non-Inverter units are less accurate in "exact temperature" than Inverter units. Is yours an Inverter unit? If it's not, then you should not complain much and just "enjoy" the air-conditioning unit rather than sulking much over it.