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It'd pay itself off quite fast if you had high heating bills though. Not really something a Queenslander would want. The one I saw wasn't cans, it was narrow channels with a glass/perspex lid and the fan had a gizmo that was activated when the air was hot enough. You could probably make it...

At my old house, anywhere from $100-600 per quarter (winter quarter ALWAYS higher) and the hot water was the offpeak bit, usually $10-20 of that bill. We had a very small electric storage HWS though, can't remember if it is 80 or 110L. We also only used 80-90L of water a day total (we use 300L...

That's solar ones with the tank on the ground. Ours is the older style one with a tank on the roof (which can require a reinforced roof). It works perfectly with the power out - I know this because we got the power connected to the house quite some time after we bought it and the hot water was...

Ours costs a big fat $0 to run most of the time, and the rest of the time (ie, winter) we put the booster on, which uses about $10 per quarter offpeak. Our solar HWS faces due south and is under a tree all afternoon so I wouldn't get too stressed about having it facing north. We didn't...

We have no gas here or I'd get one of those - $0 extra on the house for a gas infinity HWS, vs the only other sensible option on a new build of $5000 - $600 credit for a solar one. Instant gas services ROCK.

My father in law is an electrician and 'trade prices' aren't so different to retail. We get the same price as he does at the plumbing supply store - it does trade and to the public. Exact same HWS we were looking at was $50 or so more at Bunnings and $300 more at our local hardware store...

Don't get a heat pump. You're right, they don't work well in cold climates - same vague principle as a reverse cycle airconditioner that transfers heat from outside to inside, and if there's no heat outside, you don't get heat inside. My old house was in near-Canberra climate - usual...