On Thu, 22 Aug 2019 09:53:58 -0700 (PDT), trader_4
wrote:

On Thursday, August 22, 2019 at 12:05:16 PM UTC-4, wrote:


Solar really just gets you about 10 degrees over average ambient air.

That would be a huge benefit for most of the season. Early on it
would get it usable much earlier, it would allow use for maybe
another month at the end, and in between it would tune it to the
slightly higher temp you want. It also depends on how many collectors.
Want it hotter, just add more, they aren't that expensive, it's just
you need the room.



Up there that is not much help. Covering the pool will improve that
number some but as soon as you uncover it the temperature falls fast
if it is cool out.
Heat pumps are probably the best way to heat a pool but again if it is
cool out, you can't maintain the temperature without covering the
pool.

IDK, I'm not sure a heat pump is any better than cheap nat gas.
I've never seen a heat pump pool heater here.

They did the math at my wife's club and the heat pump won.