Yes, with some minor changes, you can turn a refrigerator into a freezer. In the core, you will need to change the thermostat with the one that allows a drop in temperature on your appliance. You will also need to examine the output of the appliance to know if you can convert and use it as a freezer. If you are not sure about the mechanical capabilities of the device, consult an expert for the changes. Otherwise, you might end up in loss.You can use the fantastic search tools at Shops.ae to find economical cooling & freezing products from brands like Frigidaire, Haier, Hotpoint, Voltas, Beko, Whirlpool, Bosch, LG, and Kenwood.