In some ways this deserves 5 stars but the instructions are not very good. I've had the oven for 3 months and still don't know how to turn off one oven only, if I have had both of them running! I still don't know how to use the timer! However, both ovens cook beautifully. I think the temperatures must be slightly cooler than expected but you get used to that. The insulation is phenomenal. We use the top oven to heat up some kippers for 20 minutes and hours later the oven is still warm! I don't know yet how it will affect our electricity bill, but we have stopped using our combi-microwave oven, or the conventional bit anyway, because I think it must be cheaper to use the AEG because of the insulation factor. It is also great in hot summer weather because it doesn't heat up the whole house, and the kitchen is much more comfortable to work in. I like the telescopic pull out shelves which are so much easier than the normal ones. The lower oven is quite small but it is ok for us. It heats up really fast - no having to wait 20 minutes - which is great. Having fans in both the ovens is great too.
Heat activated catalytic cleaning
The catalytic lining absorbs the grease from cooking and is activated by regular heating to 220°C. The grease residue is oxidised leaving the catalytic surface clean.