If your garage is not connected to the central house heating system, it may be quite cold inside in winter. Your cherished vehicle may get cold, becoming rust-prone, or it would be not comfortable to work at low temperatures. So, autonomous heating should be created, and the best electric garage heater 120v is really necessary.
Quite naturally, it’s better to have your basement, small room or garage insulated, regardless of the fact if it is made of metal, brick, or any other material. Meanwhile, a 120V electric heater is a good choice, safe, convenient and compact.