I currently have a 50 gallon water tank in my house and I want to replace it with a tankless system. The primary reason to replace it is space.
I recently installed 2 HeatWorks Model 1 units to test them out (I left the tank in, luckily), but that failed miserably for reasons not germane to this question. I'm returning those and now I'm left with 3 separate 30A electrical lines, including the one the tank is currently using.
I would like the heater to be able to produce enough hot water for 2 simultaneous showers. I've seen that the units that can handle that tend to demand 60-70Amps. It's not easy to run new electrical to the place where the water is, so my question is whether a unit exists that takes multiple electrical lines. This would allow me to use the 2 or all 3 30A lines.