What's wrong with my oven?

[BaroquePearl]

Recently moved so acquired a new (to us) oven, actually ten years old. It is taking ages to cook anything and nothing gets crispy, but the oven thermometer I bought is matching the oven's own assessment of the temperature. Could it be the fan? It seems to be going round but I'm not getting the same 'blast' when I open it that I did from our previous one. I just can't work out why it would take so long to cook stuff though if it is at the right temperature. Argh! My pizzas are horrible.

[wowfudge]

Maybe your old oven was over temperature?

[BaroquePearl]

Yes, I did wonder about that. Quite likely it was a bit, but surely it shouldn't take 45 minutes to just about bake a thin 2 egg sponge cake at 180 degrees? I'm wondering if my oven thermometer and the oven's thermostat are both wrong.

[wowfudge]

Hmm - see what you mean. Should be around 25 minutes for that. Do you lower the temperature as indicated for fan ovens? You could try not doing that. Otherwise I wonder if the fan needs cleaning or replacing?

[BaroquePearl]

Yes, I am still using fan oven temps and timings, which in my old oven worked in textbook fashion. It's a good idea to try adjusting as if I didn't have a fan at all, thanks.

The whole thing looks super clean but perhaps it's worn out. I wish the problem were more obvious! I really don't feel like calling someone out.

[unimaginative1979]

Is it a lamona oven?

[BaroquePearl]

No, AEG. A double built-under thing, and pretty small as a consequence.