Flat D & E have the following reasons need to increase the A/C because (1) we got smaller indoor unit in Living & dinning room than the other flats (2) we got bigger area than other flats (3) we are facing west that's why we fight for that. Like liuh our hero made a lot of effort to proove that Hutchison had make a mistake in the design. If not Hutchison won't help us to solve this problem. If all other flats need Hutchison to change I think all of us need to figue out a sound reason like Flat D & E for Hutchison.