Solar Heater in Charlotte NC?

I don’t understand how your pool never gets above 80 with full sun. Do you get a lot of wind? Interesting. Mine is about 20k gallons and I only get about 2-3 hours of direct sun a day. My pool is 82 right now.
Not sure either. I do have trees that provide shade, but I also get full sun for several hours. Perhaps it’s the running creek about 35’ from the pool and heat transfer through the soil.
‘Would probably get warmer if I cut the trees back, but I like the shade. It saves my grass, landscaping, and keeps my house cool.
 
Was this like DIY coiling irrigation / pex? or was it a DIY installation of a real solar heater? There really isn't a comparison.

No offense intended, but if you are saying you get full sun in Charlotte and your pool does not go over 80 then I have to discount your opinion immediately. I have a heavily tree'd lot, but do get several hours of sun on my pool. It consistently reaches over 80 degrees. This morning it was 79. By 5pm it was 82, and I put the solar cover away 2 weeks ago. I also in the past have been at friend's / family's community pools where there are no trees and full sun, and by July, the water is warmer than pee. Good for a hot tub maybe but not for a refreshing swim in my opinion.

The point is, I am looking for a long-term solution to extending the season without the extra expense (other than an up front cost) of gas or electric heating. I can't understand if there is a reason that Charlotte area has not adopted this.... Maybe I have a business opportunity here..... hmmm.

I don't want to take down more trees (other than the Dang sweet gums and pines). But I would like to extend the season without having to think before I turn the heat on. The pump has to run for the SWG - why can't it be heating at the same time?
Would like to hear what you end up installing and how well it works. Please keep us posted.
 
Not sure either. I do have trees that provide shade, but I also get full sun for several hours. Perhaps it’s the running creek about 35’ from the pool and heat transfer through the soil.
‘Would probably get warmer if I cut the trees back, but I like the shade. It saves my grass, landscaping, and keeps my house cool.
Do you have a lot of water features? That would keep things cool as well. I imagine the times when your getting full sun aren’t during the hottest times during the day.
 
Following……in TX and looking to install a new fglass pool (5200 gals) with ALL solar powering that might include diversion piping after the filter to some sort of solar heat. 8-10 hours of sunshine ain’t a problem here!
 
Heat transfer is fairly insensitive to water flow rate unless it gets really low.

Or were you talking about gas flow? Gas flow of a 400k btu heater is 400k btu/hr.
 
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