> Elevators and Fridges used to be brand names (of the Otis Elevator company and Frigidaire, respectively)
There's no real reason to think "fridge" is shortened from "Frigidaire" as opposed to "refrigerator".
There's no real reason to think "fridge" is shortened from "Frigidaire" as opposed to "refrigerator".
"Frigidaire" should only really differ from "frigid air" in terms of prosody.