Water heaters

So after spending the day replacing yet another heating element in a now 4 yr old water heater in our current house, most of that spent draining the tank, I’m contemplating putting all tankless heaters in the house I’m designing. I’ve gone thru 3 water heaters in 9 years of being here, multiple elements. And I have pre-filtration and water softener and I’m on city water to begin with.

But I’m wondering if anyone has any experience in tankless water heaters? The house in designing will have 3 bathrooms total, one with a big tub. I figure if I can design the tankless units into the house to start with, it might be worth it depending on their life span and how well they actually function. 240V single phase will be available, planning on 300 AMP service so I should have plenty of power to supply them.

Thoughts