choosing a heater for my above ground

[DaveC426913]

A heat pump is only efficient when air temps are warm -- usually, 50 degrees F or higher.

Yeah no. I don't plan to use it if the temp is below 21 (72). It's just that our summer temps are mostly between 23 and 27, but the pool remains at 23-24.

If you ONLY want the heat pump to WARM the pool during the summer, it may work well for you. But, for a 4,000 gallon pool, you can probably buy quite a bit of propane, for the difference in cost between a propane installation, and a heat pump.

Hm. OK. Dos that include the install for the gas line?