On Thu, 16 Aug 2012 08:08:57 -0700 (PDT), "
wrote:

On Aug 16, 6:23*am, Tom Lachance

A solar cover will help maintain the temp and you will use less
energy maintaining the temperature than letting the temp drop and trying
to reheat.- Hide quoted text -


In my world there is no science that supports
that it takes less energy to heat a pool continously
as opposed to letting the temp drop and then
reheating. It's just like setting back the temp in
a house. Unless you have different energy
sources at different times or different energy
rates, you're always going to save money by
letting the temp drop, then reheating.

But think of the solar cover as insulation. They really do help. In NY, I
could regulate the temperature within about a +/- 4 degree window using the
pump (night or day) and the solar cover. I liked the water about 78-80F
unless it was above 90F and then maybe up to 82-84F.