As we wind up this particular top 5, we shift our gaze to convection ovens.

This type of oven uses a fan to drive heat rapidly from source to food meaning better heat distribution, allowing temperatures and cooking time to be reduced in comparison to a conventional oven. This can result in 25-30% energy savings.

But, according to Natural Resources Canada, counter-top convection ovens are not always energy savers.

Some models are poorly insulated compared to a conventional oven, so they actually require more energy to operate. Microwave ovens with a convection feature offer still greater energy savings for most cooking jobs. In fact, some people find these units eliminate the need for a conventional oven, although a separate cook top is still required.