Arrived on site to install a Rheem tankless water heater in the customer basement. The customer’s Rheem tankless water heater was still covered through warranty, which I was able to track down an exact model and made the replacement. After I installed the water heater, I went ahead and turn the water back on set the temperature to 120°. I ran the water heater for about 10 minutes and checked a few sinks around the house and got a temperature reading of 120°. I informed customer if they would like the temperature to be higher that they could do so with the control controller on the unit.