Thought I would post this link again. I have had my system a little over 3 years. It has generated over $5700 in savings. Since installing the system I have paid one bill for $0.41 (after getting through the first winter as I was an August energization). Im currently going in to this winter with about $800 in bill credits, which is a little lighter than past years.
I am lining up to be right at 8.75 years for payback.
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