Ovens, especially large ones, are often rated around 2,000 W. Air fryers vary in wattage, but many are around 1,000‑1,600 W. If you run several air fryer batches, the energy cost adds up.
LADbible
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JOE.co.uk
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Thus, for large‑scale cooking (big roasts, batch baking, large trays), ovens may be more cost‑effective and faster.
