If you are using a conventional oven the rough rule of thumb is to add 10 20 c to the recommended temperature.
Fan forced vs conventional oven temperatures.
In most ovens the fan forced symbol is represented by a picture of a spinning fan inside a circle.
Generally the temperature would be reduced by 20c 50f for a fan forced oven but as ovens do vary we suggest that you check your manufacturer s handbook for more specific instructions.
When it comes to using a fan forced oven refer to the operating manual for optimal results.
Increase the temperature given by 10 20 degrees to convert to conventional oven temperature for example 160 degrees fan bake 180 degrees conventional oven or refer to your particular oven s manual or manufacturer s instructions.
The temperatures provided are a guide only.
Fan forced convection oven temperatures are usually set lower than conventional ovens.
Every oven behaves differently so factor in your knowledge of your own oven.
In all of nigella s books the temperatures stated in celsius fahrenheit or gas mark are for standard ovens and not for fan forced or convection ovens.
Oven temperatures all these recipes were tested using a fan forced oven.
Forced air a k a convection a k a fan bake ovens rely on a fan to circulate the air in the oven.
But the fan forced function means air is already constantly moving so the fan forced setting should naturally minimise any mixing of flavours and odours.
Unlike conventional ovens which cook food by surrounding it with hot air convection ovens circulate the air.
Every oven is different but as a basic guide you can reduce the temperature by about 20 degrees celsius when cooking with a fan oven.
Conversion chart celsius fan forced.
Difference between conventional oven with fan assisted and convection with.
The heating element around the fan equalises the temperature inside the oven heating every level or tray inside the chamber equally.
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Generally speaking reducing the recommending temperature by 10 c to 20 c is recommended.
See the temperature difference between fan oven and conventional oven here conventional oven to fan oven.
Keep in mind that compared to conventional oven cooking the cooking temperature needed for oven fan cooking tends to drop by 20 c.
Convection ovens are built with a fan placed in the back of the oven.
A fan forced oven uses a fan at the back of the oven to distribute heat evenly.