[kscarrol]

^ Don't disagree the above issues...

Water softener requirement is dependent on individual location and honestly this would also be a good investment for a standard tank heater if the water is that hard.

Gas is best by far so that could be a deal breaker.

The venting requirements are required for any gas water heater, not just the tankless.

Water heater location. Is the tankless heater located that much further away than the traditional tank heater? Very well could be but for us both would be located in the attic so waiting for hot water to get to the dishwasher is not an issue. We would wait for hot water with either system.