Reply #7: I agree. [View All]

[conscious evolution]

I lived in a place that had two gas WH's tied together.Not worth the extra gas cost.
Two WH's are not a bad idea,just make sure they are seperated.Your idea of using one for each zone is not a bad idea.Something to consider-The kitchen/laundry WH can be smaller then a standard WH as these areas do not use as much hot water as bathrooms do.

I would recommend a gas tankless over an electric tankless.Electric tankless heaters require a lot of power to operate.If your electrical panel and service feed is not big enough it will cost quite a bit to upgrade.
My second rec would be a electric tank heater or heaters.You can put a timer on them and shut them off at night and save on power.