So having put in a pellet stove in my house, I have just about near ended my need to use the furnace and subsequently oil for heating my house other than a single bedroom above the garage. My hot water is also heated by the furnace via oil burner, and now that I am not using oil to heat my house, it pains me to see the oil guage go down from using hot water so I'm considering other options. I have developed a moderate interest in the GE GeoSpring Hybrid water heater, but wasn't sure if the cost of running that would be lower than the cost of using oil to heat my hot water. I guess it would certainly be more efficient in the summer, but less so in the winter (I live in Maine). I don't know if it's an accurate assumption or not, but I would think in the future the cost of oil is more likely to increase than the cost of electricity, so limiting my oil requirement in my home further seems like a no brainer. Anyone have any experience with hot water heaters like this?