155 C converts directly to 135 C in a fan oven, as you typically reduce the temperature by 20 degrees when using convection settings. This adjustment accounts for the efficient heat circulation in fan-assisted ovens, which cook food more evenly than conventional ovens. When using an air fryer, which operates similarly to a fan oven, you can use this same 135 C setting for most recipes. At airfryerrecipe.co.uk, we recommend checking specific cooking times as air fryers often cook faster than traditional ovens. This conversion works perfectly for delicate bakes like soufflés or custards that require precise temperature control.
The 155 C to fan oven conversion is particularly useful for UK bakers, as most modern recipes specify fan oven temperatures. If you're adapting an older recipe that lists 155 C, simply set your fan oven to 135 C and monitor cooking progress. For air fryer users, this temperature works beautifully for cake recipes that need gentle, even heating. Remember that oven thermostats can vary, so it's wise to invest in an oven thermometer for accuracy. Many of our readers find this conversion essential when switching between conventional and fan-assisted cooking methods.
The 20-degree reduction rule exists because fan ovens circulate hot air constantly, eliminating cold spots and cooking food more efficiently. When you set your fan oven to 135 C, it delivers the same cooking power as a conventional oven at 155 C. This principle applies directly to air fryers, which use rapid air technology to achieve similar results. For foods like roasted vegetables or potato dishes, this conversion ensures perfect crispness without over-browning. The circulating air means you can often reduce cooking times slightly compared to conventional ovens.
In an air fryer, 155 C converts to approximately 135 C, mirroring the fan oven adjustment. However, because air fryers are more compact and efficient, you may need to reduce cooking times by 10-20% compared to fan oven instructions. This temperature works exceptionally well for air fryer recipes involving poultry or baked goods where you want thorough cooking without excessive browning. Many modern air fryers have pre-set functions that automatically adjust temperatures, but understanding manual conversions gives you greater control.
When converting 155 C to your air fryer, consider the food's moisture content. Juicy items like chicken breasts might need the full 135 C setting, while drier foods like roast potatoes could tolerate slightly higher temperatures. Our air fryer conversion chart provides detailed guidance for various foods. Remember that air fryers don't require preheating to the same extent as ovens, so you can often save energy while achieving identical results. For delicate items like cheesecakes or flans, the 135 C setting prevents cracking or over-browning.
The 155 C to fan oven conversion proves invaluable when baking scones, muffins, or other quick breads that need gentle heat. In an air fryer, this temperature helps achieve golden exteriors without undercooked centres. It's also ideal for reheating leftovers like frozen foods without making them soggy or dry. For best results, shake or turn food halfway through cooking to ensure even exposure to the circulating air. This temperature range works beautifully for proofing dough or dehydrating fruits when using your air fryer's special functions.
One frequent error when converting 155 C to fan oven settings is forgetting to adjust cooking times along with temperature. While the 20-degree rule works for temperature, fan ovens and air fryers often cook faster than conventional ovens. Another mistake involves overcrowding the basket or tray, which prevents proper air circulation. For perfect results at 135 C in your fan oven or air fryer, arrange food in a single layer with space between items. Using the right cleaning tools maintains your appliance's efficiency, ensuring accurate temperature distribution over time.
Many cooks assume all recipes require the same conversion factor, but some dishes benefit from slight variations. For instance, when cooking multiple items simultaneously in your air fryer, you might need to increase the temperature slightly to compensate for the added mass. The 155 C to fan oven conversion provides a reliable starting point, but always trust visual and textural cues over strict timing. Investing in an instant-read thermometer takes the guesswork out of checking doneness, especially for meats and baked goods. Regular calibration checks ensure your appliances maintain accurate temperature settings.
