Where did the recent air fryer trend come from anyway?
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.
2x 240v 30 amp
That's 14kW a whole range doesn't pull that much on full blast. There's plenty of ovens in the 3600W range meaning they run off bog-standard 240V@16A lines here but chances are you're in luck and your kitchen has 20A three-phase... also 14kW (in star configuration), intended precisely for the range, roughly divided into two for the top and one for the oven. Not much more copper so it became standard quite a while back, while 30A would be massive. Also more neutral wires.