Thanks all for your replies to my post about going with salt water pool. You have convinced me that this is the right option. Now I'm considering heating options. I'll start by saying I'm not considering gas because there are no lines in my area and they'd have to bury a tank. Therefore I've been looking at various electric heat pumps by Hayward which claim to be economical and effective for pools under 13,000 gallons such as the Hayward HP50HA. My installer says this upgrade will run me about $1900 but would keep the pool warm in the Spring and Fall seasons. I live in San Antonio Texas where the temps stay fairly warm. See below photo of highs/lows. san antonio temps.JPG I've searched the forums regarding heating options but haven't really seen anything regarding heat pumps in areas like San Antonio, only in colder climates. I'd love any feedback you can give me. Also, I'd consider solar but I already have 42 regular solar panels being installed on my roof so no room for pool solar heating up there!