Does anyone have an easy way to figure out what it will cost to heat your pool? I am in the design stages of my pool.
The pool will be about 475sf surface area and about 15k-17k gals.
The hot tub will be about 25sf and about 800 gals.

I am not really sure how the tub and the pool plumb together to heat but I know it works somehow.

P.S. I live in the Phoenix AZ area.