Shelving
All ovens should come with at least two oven shelves and one baking tray. Some ovens will include extra attachments, or offer to sell additional shelving at checkout.
Shelving grooves
The more shelving grooves (levels) there are, the greater your flexibility. Being able to place a dish closer to the top or bottom of the oven allows you to change the amount of browning and crisping on a dish. Having three or four shelving grooves also allows you to cook more food at once. Make sure the shelving grooves are sturdy. Your trays shouldn't wobble or sag.
Internal size
Make sure you measure the internal size, as it can be noticeably smaller than the external dimensions. Control and heating panels can take up internal space, diminishing cooking room. If you want to be cooking two roast chickens and a tray of vegetables all at the same time, make sure you find an oven with a large internal cooking size.
Design
Look for design features that are convenient for you. Is the door easy to open or is it exceedingly heavy? Is there a large display window? Is there an internal light so you can check on your dishes without opening the door? Is the exterior a surface that is easy to clean, such as stainless steel?
Self-cleaning
Self-cleaning ovens are a little bit of a myth. They make your cleaning job easier, they don't do the cleaning for you. There are three main types of "self-cleaning" functions, these are:
- Pyrolytic: This function heats the oven to around 500℃, turning food residue into ash that can be easily wiped away. Remember to remove any stainless steel trays and runners from the oven before you crank up the heat.
- Catalytic liners: These absorb fat, usually oil and meat splatters. Make sure you cover as much oven surface as possible for the best results.
- Steam-clean: Fill a baking tray with water and select the steam clean function. It should take around an hour, with all hardened-on food residues loosening due to the steam.