There are a few key differences with how fan and gas ovens cook food. Fan ovens will use an electric heating element behind a fan to evenly move hot air around every shelf for consistent results. A gas oven uses a flame to cook meals, meaning the level of heat varies on each level on your oven. This can be ideal for cooking roast dinners, with meat at the bottom while your spuds slowly bake above. They tend to heat up faster than fan ovens. While there’re pros and cons for each type of oven, you need to decide which will suit your style of cooking best. If you need help making up your mind, our handy buying guide has plenty of tips to steer you in the right direction.