Hello all, just got started on my new build (I'll start a build thread soon). It's my second build so I feel much more comfortable with options. The main thing I'm hung up on is heat pump vs solar. It's going to be a 15-20k gal with spa and I'm in Northern California. I will be running NG heater for the spa but I'm looking to use either solar or a heat pump just for keeping temperatures up in the summer and extending my season a little on both ends. I over built my home pv solar system by about 20% so I'm not overly concerned about operating cost, although I don't want to run it 24/7. My last pool really just needed about a 5-10* bump to make it more enjoyable. Cooler nights would bring it down to the mid-low 70s and it wouldn't hit 80 until late in the day. I appreciate any input!