Hello again. Still waiting for my caldera Marino to be delivered. I was thinking about when I fill the tub I have an electric tankless water heater that lets me set the exact temperature of my hot water in the house. We usually keep it at 117 degrees. The thing is super energy efficient, so my thought was instead of using cold ground water (northeast Ohio is usually in 40-50 range) I set my on-demand water heater to 102 and fill from my washer hot water spicket. Am I overlooking any reasons why this wouldn’t be a good idea? I figure I can save some money on the first heating too.
Also, since I am on well water with a softener, are there any specific concerns with the initial water chemistry I should be aware of? I am going to ask the dealer when they deliver to test the water and give me a specific instruction on this, but general knowledge is always appreciated.