Liquid Car Parking Heaters Secure,Enviromental Protection,Comfortable,Economical ... water tank.When the herter is working,the cooling liquid of the engine through the furnace cavity circulate ... ,do not need to wait,you can drive the car immediately. 4.Compact structurre,eay installation .Convenience service ... can dismantle and install on the new car . 5. When the car is parking ,you can close the engine ...