Heat Pump VS Gas Heater - What to get?

[lordx2]

Hey all - I have an old pool heater that ended up breaking and leaking. As you can see in the picture, it is now out of the loop (literally).

The pool is 18 x 34 (if I recall correctly), roughly 20k gallons.

I have heard people talking about heat pumps, but I don't know what the right solution for a pool of this size.

I would love something efficient, but effective - being able to hook to wifi for remote control would be a plus, but not required.

Any recommendations are genuinely appreciated!