We live in Southern California. We have a 16x32' IG 26,880 gallon pool with an automatic vinyl pool cover. Over the weekend I successfully installed a new Sta-Rite DE filter. During the installation, I removed an old and rusted Purex Tropical Isle NG heater that's gone unused for four seasons now. Now I'm thinking I'd like to install a new heating system to extend our summer a bit. Natural Gas is inexpensive during the summer months. I've had bills of only $18 at times.
Would NG still be a good choice (as opposed to a Heat Pump) and if so, what BTU rating would you recommend for this size pool? The water temperature averages about 72 in May but I'd like to bump that up to around 83-85 degrees starting on Friday and ending on Sunday. Thanks for any responses.