We're in Montana, so the "season" is a bit of a **** shoot. I'm going to be heating my new AGP (insulated and covered) with solar, for the most part, which works exceptionally well as temps rise and when the sun comes out (often). We're at high altitude (4500') so the solar radiation is high.
I'm thinking about what I should do for times like between now and July, then as September settles in. I'm really thinking just doing a supplemental propane heater is going to help take the edge off, but I'm not sure if I size it as if the solar panels didn't exist, or if I resize it lower because they do?
Can someone help? Thanks!
The pool is 15x30 oval (~12500 gallons; 360sqft surface area), it'll be below grade with side fully insulated, cover, and I'm currently running 8 2x20' (320sqft) sungrabber panels (or will be when it's fully installed.) I'm likely going to build "boxes" for the panels to increase efficiency with heavy mil plastic covering to reduce heat loss from wind, and to increase ambient air temps around the panels.