I'm looking for a recommendation on the best course to update our hot water heating system.Some background: When we moved into our upstate NY, 2200 sq. ft. home five years ago, the home was heated exclusively by Weil-McClain 68 Boiler using heating oil. We have since updated most of the home to minisplit heat pumps. The boiler is now used to heat a small family room in the basement (but only when we have guests) and our hot water. We do not have a hot water tank. We now use about 400 gallons of oil/year.
The problem is that a) I don't feel like using oil is efficient (but could be wrong) and b) when bathing or showering, the hot water doesn't stay very hot for long.
My question is: What would be the best way to heat our hot water moving forward? I have included a picture of the boiler's current space if that's helpful.