“We have an older Whirlpool microwave / convection unit that takes forever (over 35 minutes) to preheat to 400 degrees for convection use. How long does this new model take to preheat to 400 degrees?”

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• Under 5 minutes

  Answered by DonH 7 years ago

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• Hi ChuckT, our standard preheat time to 350 is 12 min + or - 5 min, 400 would only be a little longer.Thanks for your interest in Whirlpool!

  Answered by WhirlpoolTeam 7 years ago

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