Hot Radiator design concept…
The Hot Radiator notifies the user if the water is hot or not. Letter “Hot” in plain white means the water is cold and vice-versa when it turns red. No more pulling your hands back and forth to know the water temperature, when a glance can do it all. Radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating. (via)
