It is generally not recommended to place a toaster oven or any other heat-generating appliance on top of a fridge freezer. Here's why:
Air circulation: Fridge freezers require proper airflow around them to dissipate heat efficiently. Placing a toaster oven on top could obstruct this airflow, making the fridge freezer work harder to maintain its internal temperature. This can lead to reduced efficiency and potential damage to the appliance over time.
Fire hazard: Toaster ovens, as you mentioned, give out a lot of heat during operation. Placing it on top of a fridge freezer, which is not designed to handle the heat from other appliances, can be a fire hazard. Heat could build up and cause damage to the fridge freezer or nearby items.
Overloading: Fridge freezers have specific weight limits for objects placed on top of them. Adding a toaster oven on top might exceed this limit, potentially causing structural damage to the appliance.
If you need to place a toaster oven in your kitchen and don't have enough counter space, consider finding an alternative location where it can safely operate without causing any potential hazards or issues with other appliances. Additionally, always follow the manufacturer's guidelines for both the fridge freezer and the toaster oven to ensure proper usage and safety.