We are purchasing an inground pool and have the option to get either a hayward h250fd series gas heater or a rheem r410A heat pump. The heat pump is 2k-3k more upfront (even after taking into consideration running electric or a gas line) but is supposedly cheaper in the long run. However I have heard that they are almost useless when the weather is below 65 degrees. We were hoping to use the pool (16k gallons) in may and september.
Any thoughts or experiences appreciated!