https://www.frydge.uk/categories/frost-free-fridge-freezers/5 Fridge Freezer Frost Free Fridge freezer frost-free is a fully automatic system that allows you to defrost your fridge or freezer without the need to defrost manually. It is activated by heating the evaporator frequently to melt any ice that has accumulated. This causes it to drain and evaporate into the air. Automatic Defrost The automatic defrost feature found on freezers that are frost-free is intended to prevent ice from building up inside the freezing compartment. It works by periodically turning the freezer on and melting the frozen ice that could have build up over the course of time. The melted ice is then emitted into the air. This is a much easier method to defrost your freezer than by hand. Frost Free fridges and freezers typically have a defrost heater located in the evaporator coils behind the fan and a pan to take in and evaporate the water from melted ice that is then transformed back into liquid by the defrost heater, and an alarm clock that will shut off the compressor and switch on the heating element usually between one and four times per day for periods ranging from 15 to 30 minutes. The timer is also fitted with a defrost limiter thermostat to prevent the temperature within the freezer from getting too much during the defrost cycle. This is a convenient way to lower maintenance costs. However, it requires electricity to operate the system. It may also take a long time to complete the defrost. If the defrost isn't functioning properly or if the temperature is too high during a defrost, it could cause the cooling process to be disrupted and cause damage to the refrigeration components. Manual defrosting freezers remain an option for some businesses, especially in areas where there isn't enough time to invest in an automated fridge that doesn't have frost. These freezers are typically less expensive and can be easier to maintain but may have a shorter lifespan than fridges that use auto