We bought our house in Jan 07 and the house had solar panels on it for the pool the first two years it worked great. Then they started to leak and a repair man came out (because they had a 10 year warranty on them and they were only 8 years old. The repair man told me the warranty was for the original owner only and the repair was $2000. needless to say, we let the sun heat our pool the old way now.

When they worked, the pump had to be running, normally we run the pump at night (which would no no good) and had to run it in the early morning for 4 hours. this jacked up our electric bill. When they did work, we could swim year round, but the air temp would not allow it. (by the way, with the panels turned up to high it could heat the pool to 95).

I say get them if you you get an iron clad warranty in writing for a guarantee. It really does to a great job of heating it up.