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AEG9000 ProAssist TK9NK821B

Built-in
Combi
Flatbed

£873View retailers

Test score

Lowest available prices

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Unlike most microwave ovens, the AEG 9000 ProAssist TK9NK821B doesn’t have a turntable, and as it’s a combi microwave you can use it to bake and grill as well as reheat and defrost. We’ve tested its different cooking modes, so read our full review to discover whether it has any weaknesses that will leave your meals less than perfect.

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What's included?

What is it?
What’s the microwave function like?
What are the other functions like?
How easy is it to use and clean?
Is there anything else I should know?
Should I buy it?

Digital first month £5, then £8.99 per month, cancel at any time.

KEY TEST RESULTS
Single use
Manual Defrost
Ease of use

Feb 2026First reviewed by Which?
Aug 2025Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

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How we test microwaves

14 Oct 2025

Single use

How we test single use

We test how quickly and evenly microwaves heat in microwave mode and we record how much water is lost from the food during cooking. This is the overall score for microwaves heating one dish, from cold, in microwave mode.

Speed of heating

How we test speed of heating

We test how quickly the microwaves can heat up when cooking in microwave mode.

Evenness of heating

How we test evenness of heating

We check for hot and cold spots in food to make sure it's evenly cooked.

Quality of food

How we test quality of food

We test how much water is lost from food when heating in microwave mode.

Continuous use

How we test continuous use

This is the overall score for microwave heating when the microwave has previously been in use and has warmed up. We test how quickly and evenly microwaves heat in microwave mode and we record how much water is lost from the food during cooking.

Manual Defrost

How we test manual defrost

How evenly the microwaves defrost minced meat on a manual setting.

Steaming

How we test steaming

How well the microwave steams a meal of fish, potatoes and veg.

Grilling toast

How we test grilling toast

How widely and evenly the grill browns slices of white, crustless bread.

Baking cakes

How we test baking cakes

How well the microwave bakes fairy cakes in convection mode.

Ease of use

How we test ease of use

This includes setting the clock, opening and closing the door, loading and unloading the oven, using the power and time controls, reading the display, cleaning, and the instructions and information provided by the manufacturer.

Cleaning

How we test cleaning

How easy it is to clean inside the microwave and the exterior casing.

Quietness

How we test quietness

We test how noisy each microwave is in microwave heating and defrosting mode.

Energy consumption single use

How we test energy consumption single use

How much energy is used by the microwave to heat food when it is only used once.

Energy consumption repeated use

How we test energy consumption repeated use

How much energy is used by the microwave to heat food when it is being used in quick succession.

General
Type	Combi
Freestanding or built-in	Built-in
Turntable or flatbed	Flatbed
Height	45cm
Width	59.5cm
Depth	61.8cm
Max plate size	41cm
Type of controls	Touch keys, dial

Power
Stated Microwave Power (watts)	1000
Number of power levels	10

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AEG9000 ProAssist TK9NK821B

Lowest available prices