The benefit of natural gas or propane heater is that they heat your pool in only a few hours versus many hours or days required initially to warm the pool with a heat pump. Gas heat is ideal if you don't use your pool frequently, and just want to heat your pool as needed. Key attributes of Hayward's gas pool heaters are that they're environmentally responsible and lower the cost of ownership via its energy efficiency and reliability.
Another benefit of natural gas or propane pool heaters is they perform well in any temperature. They'll heat your pool regardless of the outside ambient temperature.