Tankless water heater

We made that switch about a month ago, installing a G*r**d water heater. There is an ECO module in this water heater that has been faulty from day one. I am still waiting on the manufacturer to send the new module. In my opinion, I would be hesitant to make this purchase again. This unit has shut down in the middle of a shower. When you turn off the hot water at the faucet, you have to wait as much as 10 minutes before the water heater will come on again, otherwise it has an audible alarm and an error message saying the water at the faucet is too hot. (There is no sensor at any of the faucets.)

I would rather have a regular Gas/Electric water heater. I think they're more dependable and they get hot water to any of the faucets much faster than this tankless unit does.