wrote:
On Tue, 2 Feb 2016 14:38:27 -0500, Keyser Söze wrote:

wrote:
On Tue, 2 Feb 2016 13:59:40 -0500, Keyser Söze wrote:



Speaking of pools, I finally made it over to the fairly new Hall
(Calvert County) indoor aquatics center, which has a bunch of swim
lanes, a huge jacuzzi and a therapy pool, which I also tried and has
water at a balmy 86 degrees Fahrenheit, and an exercise equipment room,
too. Nice play to spend an afternoon in the middle of the winter here.

What temperature are they running the pool with the lanes?
It would be 80-81 and we like hot water here. It is just not good for
exercising.




I'll ask the next time I visit. The therapy pool was hot enough for me.
Doubt I could tolerate the heat in the jacuzzi pool.

Jacuzzis are purely therapeutic and should be hot, to the point of
uncomfortable (103 or so). You are just supposed to be in them for a
short time. It is great for sore muscles.
Recreational hot tubs will run cooler 100-102 and still best when it
is cold outside. We really only use ours on very cool nights. 50-60f

Fortunately it is usually sunny enough and warm enough during the day
to get the water fairly warm for free.
I am getting ready to redo my collectors and I may go with glazing so
I can really get some heat in there. Right now I am pretty much
limited to 10-15 degrees above ambient air depending on the wind.



If it freezes where you are get vertical collectors. I have Fafco 30. Year
old collectors that are still fine. Bought some horizontal tube collectors
a few years ago. Bypassed and need to get off roof to dumps. The
horizontal do not drain and freeze splits them.