Top-Freezer refrigerator is a two-temperature fridge. Its freezer compartment is on its upper side and chiller on the lower compartment. The freezer compartment is smaller if you compare it with the chiller compartment.
A basic top-freezer refrigerator has fewer electrical and mechanical components.
Compressor motor of the fridge is the main component that consumes significant electricity. It is the pot-shaped component at the lower back of your refrigerator. It produces a humming sound when you plug your refrigerator into electricity. And if your refrigerator model has no lid that covers the space that houses the compressor, you can see it.
Direct cool or frost-free top freezer fridge
A top freezer refrigerator is a direct cool or a frost-free system.
Direct cool is the traditional technology for constructing a refrigerator system. Evaporator tube runs behind the inner refrigerator surface.
Ice build up in the freezer compartment when it has run for days.
Sometimes you may have to switch off your fridge and leave the freezer door open to defrost it. Stuff get stuck in ice and become hard to remove until you defrost the freezer.
Frost-free technology is the alternative for direct cool technology.
Frost-free technology introduces extra gadgets to the conventional system. Gadgets like evaporator fan, thermal switch, defrost heater and timer switch. All the gadgets, apart from the timer, connect to the evaporator. They work in harmony to defrost the refrigerator evaporator automatically. That’s why items you keep in the non-frost refrigerator freezer don’t get covered with ice.
Two compressor system
Some manufacturers install two compressors on a top-freezer refrigerator. Each compressor connects to one compartment.
Suppose one compressor dies. One compartment will fail. The second compressor and compartment will continue to operate.
A two-compressor system means that two compressors on your refrigerator consume electricity. You pay more in electricity bill. So, avoid this system if electricity cost is a concern to you.
Top-freezer refrigerator structure and size
Manufacturers produce different sizes of top-freezer refrigerators. A standard size freezer compartment in a two-temperature fridge is 1/3rd of the whole refrigerator storage space. A seven cubic feet refrigerator would store enough foodstuff for a nuclear family.
You can rearrange trays in the chiller compartment to accommodate drink bottles and pizza plates.
Top-freezer refrigerators ship with plastic containers for keeping fresh vegetables and fruits.
Some top freezer refrigerators have external condensers while others have internal. A condenser is the heat exchanger where warm refrigerant dumps heat in the refrigeration cycle.
An external condenser is on the back of your refrigerator or underneath. And if you touch it while your refrigerator is running, it feels warm. An internal condenser tube runs behind the refrigerator outer surface. If you touch your refrigerator’s outer surfaces while it is running, it feels warm.
Allow three inches between the refrigerator’s warm surfaces and the wall next to the spot you place it. This prevents overheating.
If your refrigerator has an external condenser, always keep it clean and free from dust. Space between the condenser and the wall should be enough to allow enough air circulation to cool it.
Your refrigerator compressor also gets warm when the fridge is operating. This is another reason to place your refrigerator in a place with good ventilation.
The thermostat in your fridge cuts and connects electricity to the compressor. It does this intermittently when the refrigerator has attained set optimum temperature. This enables the fridge to maintain its set temperature and economize electricity.