Cook as many dishes as possible in your microwave, slow cooker, air fryer or toaster oven. Because they cook food quicker and are smaller, they can use as much as 75% less energy than a conventional oven. You can save up to $18 dollars per year! Stack the air fryer directly on top of the slow cooker. Put the toaster oven on top of that. Plug them all into one power strip. Is the wall outlet getting warm? Radiant heat power combo!