The main component of a refrigerator is its coolant, which is a high-pressure liquid. When the pressure drops suddenly the coolant expands turning into gas. The coolant is a crucial component of a refrigerator, however, there are other important factors that go into choosing a fridge. Here are the most important features of a refrigerator. … Read more6 Reasons You Will Never Be Able To Important Features Of A Fridge Like Bill Gates