Quote Originally Posted by ShelleyAnn View Post
CarlD - Let me ask it this way...Do you think the water will be as warm as last season when I forced all 48 GPM thru 32' of solar panel?
I think if you plumb all your panels in parallel rather than serial you will see a SIGNIFICANT boost in effectiveness, especially if you add the two new panels that way.

Remember: It's BTUs that matter, not temperature.

Once I get my panels hooked up, with this nice weather I should see temp gains of 8-10degrees per day. When all the panels were in serial, I'd see 4-6 degrees per day. (my panels are 2'x4' but I have about 30 of them--split into 2 parallel plumbed groups).