Kiwi Winter Home Survival Kit

ok, we know this is not the Antarctic (although we are not that far away) and that we hardly ever reach the 0º, but most houses here are so poorly insolated, that the temperature inside the home doesn't differ much from that outside. If we had known this before coming here, we would have added an extra pair of socks to our luggage (and we would probably have sneaked another blanket from the plane as well)... We have strong cold southerlies today, which means: it is cold. The MetService website recommends two or three layers of clothing to remain comfortable in these conditions (but, do they mean inside your home? I wonder...)