"I think it was 2006 when we had our Solar Hot water installed in Berkeley. The guys who did the job were a) friendly, b) neat and tidy, c) finished on time. The system has worked perfectly, since installation. After ten years, one part failed but it only took me a couple of minutes to replace, costing about ten dollars. The cost effectiveness has been superb, paying for itself in less 8 years. That’s a $6,500 investment that has paid 12% interest tax free for eleven years. I wish all my investments were as smart!! Also, we must save tons of CO2 from the atmosphere. You can’t do better than that."