Hi, have a 34-year-old oil water heater. We are starting to see sediment in the hot water and I’d eventually want to switch from oil to gas, which is accessible. Financially, we want to put that job off a few years and to to get an oil water heater now and then switch to gas in a few years seems wasteful. My thought was to get an electric tankless water heater now and switch the heat and kitchen to gas when we can afford it. My basement is also very small, so tankless will provide additional room. The house has one and a half baths and four bedrooms. Does electric tankless make sense and how do you decide what size the tankless must be to provide the right amount of how water?