Until the government forces utilities to pay a reasonable amount to buy back electricity looks like solar electric is not good for return on investment. This website showed at least 20 years ROI for my home.
So on to the subject at hand. I have a split level house, with the living area upstairs.
I was thinking of using an inexpensive solar box to provide some heating.
2 x 4 meters, facing south. At 90% efficiency, it's supposed to produce around 400 watts per square meter or 3,200 watts of heating when it's sunny. My guess on DIY price would be around $1,000.
So far I've come up with these plans, which seem the easiest / cheapest
Anyone tried something similar?
Calculating optimal angle in New Zealand