Are you b able to regulate water temperature with this system? I am not familiar with the flat plate system, but a quick online search indicated it didn't allow temp setting. Im thinking about the shower system and sink and it doesn't seem it could control the temp
This method simply uses engine heat to heat the water. The water is very hot just after you stop the engine, and the length of time it remains hot depends on how long it takes the engine to cool down, based on outside temp. You cannot set the temp, but you have some control by adjusting the faucet between hot and cold. It's adequate for washing dishes and brief showers.