I have read in a maintenance manual that the ideal temperature for incoming water to a dishwasher is 150F.
In my house, the hot water heater is currently set to 135F and it cools on traveling around the house, so the typical faucet temperature is around 120F.
I have considered up the temperature of the water heater to 150F, but in that case it is recommended to have a thermostatic valve reduce the temperature to 120F, which would be no better than what is happening now as far as the dishwasher is concerned.
I could boost the water heater temperature to 155F which would result in 150F water reaching the dishwasher, however, then all the faucets would also have 150F hot water, which is pretty hot.
The only way I see around this is to create a special hot water line that goes to the dishwasher and clothes washer that comes directly from the water heater and put the water heater at 155F, then put a valve on the water supplies to all the rest of the house. Is this is the "proper" solution, or is there another way to get the right temperature to the appliances?