Ours has to run from other side of house and in slab to island sink. Takes about 30 seconds and is quite annoying. If building again i'd move it…

As per aussieta's advice above. We've had our insta gas hwc for the last twenty years and apart from the initial muffled " whoomph " when it fires up they…

instantaneous hws makes very little noise
new builds you do tend to hear the water through the pipes
lag in getting hot water at furthest tap is worse than storage systems