I have been in the swimming pool repair business since 1990 and I have never seen SoCalGas offer a rebate on the purchase of a pool heater, let alone a $300 rebate! This is unprecedented as far as I know. It is available through the end of the year on pool heater models that meet high efficiency standards. You can check out the details here: http://o.zip.ma/14Whu .
My favorite of the qualifying heaters is the Hayward H400FDN. This heater, in my experience, is the most durable of the qualifying heaters. It comes standard with a Cupro-nickel heat exchanger, making the water path more corrosion resistant. This is an upgrade that costs you more money on some other heaters.
Hayward is offering rebates on this heater through the end of September 2017. If you need a new swimming pool heater, and want to save significantly, now is the time to act. If you live in Huntington Beach or Fountain Valley, contact me and I will come to your home for a free installation estimate.