Because most air fryers are countertop units that plug into a 15 amp outlet, vs most residential electric ovens that require 2x 240v 30 amp connections, or roughly 8x the available power…
That’s a bit of a stretch since most residential ovens also have a range on top, so the power requirements are to cover multiple elements, not the oven alone. It’s probably actually less efficient, but still lower energy because you’re heating a smaller cavity.
Because most air fryers are countertop units that plug into a 15 amp outlet, vs most residential electric ovens that require 2x 240v 30 amp connections, or roughly 8x the available power…
Plus the time savings of cooking faster in the air fryer than the regular oven to further compound those savings.
That’s a bit of a stretch since most residential ovens also have a range on top, so the power requirements are to cover multiple elements, not the oven alone. It’s probably actually less efficient, but still lower energy because you’re heating a smaller cavity.