Can a tankless Energy Star water heater replace a gas heater?

No, but if you go electric you have to decide whether to leave the old gas pipes in place or remove them, and it is more expensive to heat electric. I would stay with gas. If you have a hot water tank, you can have an electric immersion heater fitted as a backup in case the gas fails.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.