I am doing to review of the one of the bast technology created by Whirlpool. The Double Door refrigerator name is suggested by because there are two door using for maintaining the different temperature of both the compartment. Because of using R- 134a refrigerant this is Eco friendly. The upper door consist of evaporator therefore it absorb the heat form the inside the compartment and it is converted into the ice which temperature is below than atmosphere. Second door is maintaining the temperature below the atmosphere. It is consist of the main part - 1)Evaporator, 2)Condenser, 3)Compressor, 4)Expansion Valve.