Pool heat pumps

A good and kind neighbor friend of mine owns a good size swimming pool, where I spent most of my summer time swimming and at the same time I get to enjoy the heat of the sun burning my skin. I just love it though...Anyway, She has this good size swimming pool and she is thinking of buying pool heat pumps because she wanted to be able to still enjoy swimming even during spring, fall and winter season. She despise the fact that they can only enjoy their swimming pool only in summer time and they all love to swim. Buying a pool heat pumps is what she is now thinking.