How does a microwave work?
The clue's in the name. Microwaves work by literally using 'microwaves', a type of electromagnetic radiation, similar to radio waves and light.
Think of these 'microwaves' as tiny, invisible waves that bounce around inside the oven. When these waves hit your food, they make the water molecules in it shake really fast, which results in the heat needed for the cooking process.
If you have a microwave with a traditional plate, this spins around to ensure even cooking – otherwise the side closest to the magnetron (the component that generates the waves) would cook at a faster rate.
Flatbed microwaves don't have a spinning plate, but instead they use a rotating antenna to distribute heat evenly in the microwave cavity.
Are microwaves safe to use?
While a traditional oven uses an element that heats the air inside of the oven, a microwave uses radiation to heat or cook your food. While this may sound scary, there's no need to worry – the World Health Organisation says that, when used correctly, the radiation levels won’t harm you.
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What should I look for when choosing the best microwave?
Size: Whether you want it out on a worktop or want to hide it away, the best microwave should work with your space. Check the door opens easily (some open top to bottom).
Type: If you just need to defrost and heat food or ready meals then a humble microwave oven will do those jobs for you. But if you’re after something that can be used for roasting and grilling then a combination model may be better. You can also get air fryer microwave combos now too, though they tend to be fairly pricey.
Cost: Combination ovens are more expensive than standard microwaves as they can do more. The right microwave for you will depend on your budget - they can cost anywhere between £50 to £600.
Style: Looks aren’t everything, but if every appliance in your kitchen is silver you might not want a white or black microwave. Many manufacturers offer a variety of colour options.
Power: A 1200-watt microwave will be more powerful and cook quicker than a 700-watt version. Look for a higher wattage if speed is a priority.
Programmes: Some cheaper models just heat up food and, if you’re lucky, have a defrost feature. Others have programmes on the control panel for different food types, which change the way the microwave works, either slowing it down or speeding it up depending on the food type – including pizza and fish settings. In general, the more functionality it has, the more you can expect to pay.
Extra features: Not all microwaves have digital clocks and 30-second buttons. If these are important to you, make sure your new microwave offers these features.
Related: The best budget air fryer for families
What's the difference between standard, grill and combination microwaves?
Standard microwaves: Sometimes called solo microwaves, these are the most basic type, perfect for reheating leftovers or cooking small meals.
Grill microwaves: As well as working as a standard microwave, these have a built-in grill element, allowing you to grill food like chicken breasts, steak and bacon. The grill element heats up the food from above, giving it a crispy texture.
Combination microwaves: The most versatile type of microwave, these combine the function of a standard microwave with the benefits of a conventional oven, so you can bake and roast food in them. However, it's worth noting that they're often less powerful than a full-sized oven so are better suited to smaller dishes.
Other additional features: Some models even include a steamer and air fryer function too – though you're likely to pay a pretty penny for them. They're not always included with a combination microwave, so be sure to check the specific model you're interested in to see if it has these features.
How long should a microwave last?
The best microwaves tend to last around seven years. Like any kitchen appliance, if you have a big family or if you use it a lot then it won’t last that long. If you look after it then you may get as many as 10 years’ use out of it.
About the author
Natasha Gregson is a Senior Content Editor at Mumsnet, overseeing all home and kitchen articles with a focus on product round-ups and reviews. With several years of editorial experience under her belt, she has written on many topics, including everything from beauty to parenting, fashion to health, but her true expertise is seeking out the best lifestyle advice and products to make life that little bit easier.
An avid foodie, she loves nothing more than trying new culinary creations in the kitchen, which often includes testing out and researching the latest time-saving gadgets for Mumsnet. She has also had work published in The i Paper, Stylist Magazine, Gransnet and Exposed Magazine.
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