In Windsor Hills, although the spa and pool are one, the spa heat can be turned on without pool heat. Many owners do offer spa heat only. It is usually about half the price, so might want to consider asking if that is important to you. Most people in August do not purchase pool heat, but if it rains a lot, this can really cool down the pool, so getting the pool heat does provide you consistency if that is important to you. When we are down, we always heat the pool, as I like bath water, lol.
Sandy