I just received my NatHers report today, and to my surprise only have 6 stars, which I thought would be higher as I have good solar orientation, slab construction, R5 insulation to roof, r2.5 to walls (brick veneer), anti con to roof and double sided foil wrap to walls, and all windows and doors double glazed 4-10-4, for a 20sq house in south-east Melbourne. However, looking at the report, I notice quite a few of my internal walls have been listed in the external walls part of the report, could this make any difference?
Would love to hear anyone's thoughts, or suggestions if there's anything I can improve?
Cheers