I just bought a house and I hate having stuff in my own house that I don't understand!!. Below is my (leaking) water heater. What is this thing...besides EXPENSIVE. It's obviously connected to the oil burner. I kind of want an electric one. Cold in...hot out...220VAC. And when I need another one in 10 years, it'll take 20 min. The house has hot water baseboard heat...I've never had that either. Can I just cap the stuff off that runs from the oil burner to the water heater? Does this water heater have anything to do with the baseboard heat? That's a closed system that does its own thing, right?