Let’s try to figure out whether there are significant differences for the consumer in the use of refrigerators with two such common cooling systems as drip cooling (sometimes calling crying device) and No frost. Many people claim that they don’t want to defrost the fridge freezer often on the one hand and avoid situations when the fridge doesn’t work properly, on the other. Does any modern cooling device incorporate this combination?
Actually, modern drip refrigerators do not require frequent defrosting. This is achieved due to the separation of chambers, the use of new thermal insulation materials, improved door seals, and so on. The manufacturers recommend defrosting such a cooling unit at least twice a year. And this mainly applies to the freezer. This interval will be different for each consumer. It depends on many external factors, characteristics, and activity of use. You can be guided by the thickness of the frost that forms on the walls or shelves of the freezer. If the frost layer grows larger than 0.2 inches, it’s time to defrost the unit not waiting until the refrigerator fails.
To do this, you need to plan your time. You will need to switch off the refrigerator or the freezer only if the design of your device allows. The refrigerator compartment of the drip-type cooling unit does not need special defrosting. The cold there comes from the rear inner wall. It is cyclically covered with frost. When the compressor is not working, the wall thawing covered with droplets. This is why the system is named this way.
After a couple of hours, you can gradually load the food.
The No Frost refrigerators do not technically need defrosting. And the absence of frost in the freezer is their main advantage. Hence the name of the system. The main difference of the No Frost fridge is that its working part is isolated from the chambers. Cold is formed the same way as in the drip device on the evaporator, but cold air is supplied to the chamber with the help of a fan through special air channels. This lets the No Frost system to quickly lower the temperature inside. But due to forced circulation, foodstuff needs to be more carefully packaged to reduce drying out.
All that doesn’t mean you could leave the refrigerator uncleaned. And you won’t be able to clean the device without defrosting it. Therefore, for hygiene reasons, No Frost devices must be defrosted at least once a year. It takes on average a day with open doors at room temperature to completely thaw the unit. Often, an incompletely defrosted fridge doesn’t work properly. One of the reasons can be the freezing of the drainage hole and water after the next automatic defrosting will flow into the freezer. Also, the freezing of the air duct and, as a result, an increase of the temperature in the refrigerator chamber. These are not considered breakdowns requiring professional fridge repair and will go away on their own. However, it’s better not to hurry with the defrost process to avoid possible future complications. Of course, is up to you how you will take care of your cooling unit and how much time you will spend on it.