That's OK, that's your choice. I believe most dishwashers will work with either. My dishwasher is connected to a hot water tap and also heats its own water to

That's OK, that's your choice. I believe most dishwashers will work with either. My dishwasher is connected to a hot water tap and also heats its own water to exactly the correct temperature... it just doesn't need to heat it as much because it's connected to a hot water line. Here's the install guide of a random dishwasher selling in Germany right now: https://media3.bosch-home.com/Documents/9000521334_L.pdf https://media3.bosch-home.com/Documents/9000521334_L.pdf It says to connect to a water source with these characteristics: * Pressure: 0,05 - 1 MPa (0,5 - 10 bar) * Temperature: max 60°C It doesn't specify a minimum temperature although I assume it'd have to be >=1°C. But it is clear you can connect to either a hot or a cold water line.