I convinced hubby to change our tankless water heater temp to 130 from 120. It’s much better now. Water heats up faster at the farthest points from the heater, and the master shower is almost instant now since the water heater is on the side where the master bath is located. It’s not too hot either. Just right!

It won't be 140 by the time it reaches you, but will steadily increase as you shower. If you have nerve issues, you might not realize it before you are scalded 140 degrees can produce third degree burns in 5 seconds.

It's also dangerous for people that are visiting, and don't realize you have it that high, so warn them. Especially if they have small children. And they are in the guest shower closer to the tank, like in our house.

We took the TECO deal and got the recirculating tankless water heater. The advantage is that because it recirculates, you can set the temp lower (we are at 120) and you still get hot enough water to shower sooner at your most remote point. At 120, it will take over a minute to get a third degree burn.

We still warn our guests, however.

I find living here with my tankless water heater a wonderful experience even if I have to wait a few for the 125 degrees to come my way.