In electric drip coffeemakers, water is pushed up by boiling a portion of it at a time, right?
My friend told me that unless he uses warm of hot water in the coffeemaker tank, the resulting coffee will be much cooler. I find this very hard to believe as I always use cold water and the coffee comes out hot.
All the water will travel past a heating element, and steam "bubbles" will push the water on the top where it will "drip". BUT is it possible that in cheaper coffeemakers the cold water can slip past the heating element un-heated and travel up with the following bubble, cooling down the outcome? Is this where the watts will really come into play?
I am not asking if cold water should be used, but rather if such a scenario is possible. I do not have a precise thermometer or a cheap coffeemaker to test this. Also, I found this very hard question to google, as the only keywords I can think of are "cold, water, drip, coffee".