Definitely do not use Performance Solar. Once they sell you something, they are gone! There is absolutely no after sales support. The control panel worked ok and had no problem. After 9 months in service, the Solar heating option on the control panel suddenly disappeared... everything else remains and are working ok. I called Performance Solar to see if they could get someone to take a look at the problem. I had to wait one day for the service personel to talk to a technical guy. After a day's wait, I was told that the problem is on the control panel!? When I asked why they think only the solar heating option is having problem, they cannot answer my question. Then she wanted to charge me $125 to send someone down to diagnose the problem. The solar panels and equipment are still under warranty (we had that installed less than 1 year and it is warrantied for 12 years). I am considering reporting them to the BBB and CSLB
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