Bottle warmers are a quick alternative to the cooker and microwave to heat your bottle quickly and gently. With simple controls, the bottle is ready to drink in seconds. This is especially useful for young, inexperienced parents who often can’t feel the right temperature in the bottle.

Our test of full size bottle warmers will help you find the right one. That’s why we’ve looked at several bottle warmers and selected the most important ones for you. We also show you the advantages and disadvantages of each bottle warmer. Enjoy reading.

The most important things in a nutshell

  • Bottle warmers heat the bottle to a suitable temperature in a very short time. This is especially useful for new parents who don’t yet feel the temperature is right.
  • There are two types of bottle warmer: one with water and one without. Both types have their advantages and disadvantages.
  • Hygiene is very important because the baby’s immune system is not yet fully developed. In addition to the bottle warmer, the bottle must also be cleaned regularly to prevent encrustation and the accumulation of harmful bacteria and germs.

Questions and answers: What you need to know about bottle warmers

Before buying a bottle warmer, there are a few things to consider. These are summarised and explained in more detail in the following sections.

What’s special about a bottle warmer and what are its advantages?

With a bottle warmer, you can prepare food for your baby quickly and easily. Most devices also give you a signal when the bottle has reached the desired temperature. This means you don’t have to wait for the bottle to warm up and make sure it’s not too hot.

Most modern models also have a defrost function. This feature allows you to carefully defrost frozen milk as well as baby food. These bottle warmers allow you to defrost evenly and gently. This means that no vitamins and minerals are lost.

Flaschenwaermer zubereitung auch für Glaeschen
You can also heat jars in a bottle warmer

Another advantage is the reheating function. It prevents the bottle or your baby’s food from getting cold if you don’t need it right away. So you can safely prepare the bottle before your baby starts whining.

But if you need to warm up a bottle quickly, you can fill it with hot water. This is especially useful for babies who are particularly hungry or restless.

Most bottle warmers can hold a single bottle. But devices designed for two bottles can often also be used as sterilisers. So there is no need to buy a new unit.

Who are bottle warmers for?

Bottle warmers are primarily designed to make life easier for new parents. Especially in the first few days, parents are often unsure whether a bottle is the right temperature. A bottle warmer is designed to help bring the food to the ideal temperature. Not too hot or too cold, just right.

A bottle warmer is useful for both breastfeeding and non-breastfeeding mothers

Breastfeeding mothers usually have no such problems. Breast milk is always at the ideal temperature. But breastfeeding mothers can also use a bottle warmer. When they express breast milk, they freeze it for later. Thanks to the thawing function, the bottle warmer heats the frozen breast milk gently and evenly. No important vitamins or nutrients are lost.

If you are still unsure about the right temperature for your baby’s food or if you want to prepare your stored breast milk gently, a bottle warmer is the right choice for you.

How do bottle warmers work?

Bottle warmers essentially work on the principle of a water bath. But instead of a pot on the cooker, the bottle is boiled in the unit’s container.

This means that the container with the bottle to be boiled is filled with a certain amount of water. The amount of water needed depends on the bottle warmer.

The appliance can be operated using the rotary switch or the LCD display. This is done differently for each bottle warmer. The display often shows the current water temperature or the remaining heating time.

When the desired temperature is reached in the bottle, an acoustic or light signal sounds. Some bottle warmers automatically switch to the keep-warm position when the desired temperature is reached.

How much does a bottle warmer cost?

The price range for bottle warmers is sometimes very wide. Depending on the features and quality, a variable between €10 and €350 is possible.

Simple water-based bottle warmers that can hold one bottle are available for as little as €10. They also take longer to warm up. But as a simple basic model, they are a good choice.

The situation is different for bottle warmers that work with infrared light. These models are a little more expensive. The more features these devices have, the more you will have to dig into your pocket.

Where can you buy bottle warmers?

Apart from pharmacies and second-hand shops, you can also buy bottle warmers online. Local shops, especially specialist shops, can give you advice. They can also explain any questions you might have before buying. If you want to buy a good quality bottle warmer, we recommend the following online shops and shops: Amazon eBay In the online shops, you can read the reviews of certain products and compare their ratings. This will help you choose the right product.

What are the alternatives to bottle warmers?

If you don’t want to buy a bottle warmer, there are two ways to warm your baby’s bottles. The following table gives an overview of the main points of the two options.

To check if the bottle is at the right temperature, put a few drops on the inside of your wrist. This area is particularly sensitive. If you have a good feeling, the temperature is ideal. You can also hold the bottle up to your face.

Breast milk should not be boiled or heated in the microwave.

In principle, you can heat any liquid or paste baby food using either of these two methods. However, breast milk is an exception. You should not heat this food in the microwave! When you microwave breast milk, you lose important fatty acids and proteins. These macronutrients are very important for your baby.

What can be warmed in a bottle warmer?

Your baby will go through different feeding stages. From breast milk to porridge to pureed food. You can even warm up bottles of pureed food. The question is whether you can warm them in a bottle warmer.

You can heat almost anything that will fit in a bottle warmer. These include:

If you want to use a cooker for something other than jars, keep in mind that heating times can vary greatly. The type and consistency of food also plays a role.

The initial temperature and the type of packaging the food is stored in are also important. A portion of frozen breast milk takes longer to warm up than a portion of baby food that is already at room temperature.

For the first few days, give your baby only breast milk or regular milk, both of which can be warmed in a bottle warmer.

The target temperature of your food and the time it takes to reach it are also important.

What are the different types of bottle warmers?

These are the different types of bottle warmers. There are two different types, each with their own advantages and disadvantages.

Classic bottle warmer

Bottle warmers are the classic baby food warmer. They work on the principle of a water bath. You fill the bottle warmer with water. The amount of water needed varies from device to device. When the water heats up, the bottle heats up too.

The appliance is controlled by a button or an LCD display. Some models indicate by a sound or light signal when the desired temperature is reached. Bottled water heaters are relatively inexpensive. Therefore, they are particularly suitable for young families as well as parents with a small budget. In addition, the selection of these devices is quite large. However, you should make sure that bottle warmers are cleaned regularly. Otherwise, the device can easily come loose. This means that the bottle warmer will no longer work properly. This means that efficient operation and even heating are no longer guaranteed.

  • Low cost
  • Easy to use
  • Various
  • Increases in volume quickly
  • Requires regular cleaning

Waterless bottle warmers

Waterless bottle warmers, on the other hand, are a new development among baby warmers. They use light technology instead of water to warm the bottle. They use infrared rays to heat the baby food to the desired temperature.

However, the heating power of these devices is lower than that of water-based bottle warmers. This means that the infrared rays take longer to reach the desired temperature. However, waterless bottle warmers are easier to clean and maintain. The infrared light technology kills bacteria and germs. Since the device does not use water, there is no risk of limescale build-up. However, since these products are still relatively new on the market, they are also somewhat more expensive than ordinary water warmers.

  • Easy to clean
  • No descaling
  • No germs &.
  • Bacteria are killed
  • Longer heat-up time
  • More expensive

Buying advice: how to find the right bottle warmer?

When you’re looking for the perfect bottle warmer, you’ll find a wide range of models and offerings. Here are the criteria you can use to choose from the many bottle warmers available.

You can use the following criteria to compare bottle warmers:


Size refers to the number of bottles. In other words, how many bottles you can heat in the bottle warmer at the same time. Most bottle warmers can warm a single bottle. However, there are also some that can heat two bottles at the same time.

Twin bottle warmers are especially useful for parents with twins. They can heat two bottles at the same time with one device.

When it comes to size, you shouldn’t just look at the number of bottles you can use. You should check that the appliance is suitable for each bottle, regardless of the brand. Some devices are only suitable for small bottles. In other bottle warmers, however, you can heat larger baby bottles without any problems.

Freezing and heating functions

Many mothers express milk for various reasons and store it for later. Often the milk is frozen. However, the milk needs to be defrosted and carefully warmed before it is given to the baby.

With the defrost function, you can prepare frozen milk quickly.

You can take the frozen milk out of the freezer the day before, defrost it and reheat it if you want. And a glass warmer with a defrost function is very handy if you need it quickly. You can also gently reheat breast milk. This way, all the vitamins and important ingredients are preserved.

Another useful function that can make your life easier is keeping the bottles warm. This way you can prepare the bottle in peace and give it to your baby later. Even if your baby doesn’t eat the whole bottle at once, the keep warm function ensures that the food stays at the right temperature and doesn’t get cold.

When you buy a bottle warmer, make sure you measure the temperature regularly. This way you can be sure that your food is always at the right temperature.

The keep warm function gives you more freedom when feeding by keeping your bottle warm when you need it.

Sterilisation option

Another additional feature that some bottle warmers offer is the sterilisation option. It’s important to sterilise your bottles. This process kills bacteria and germs that are harmful to your baby.

Of course, there are special accessories that are only meant for sterilisation. You can also boil the bottles in a frying pan. But there are also bottle warmers that already have this function. This way you don’t have to buy another appliance and you have more space in your kitchen.

These bottle warmers with sterilisation function usually have space for two bottles. This means that you can prepare two bottles at the same time or remove bacteria from a second bottle while preparing one bottle.

Bottle warmers with sterilisation function are versatile and space-saving

With this device, you can sterilise not only bottles, but also teats and other items that you need for feeding your baby. Bacteria can easily grow on them too. However, they are dangerous for your baby because they can cause gastrointestinal infections.

Heating power

How long the bottle warmer takes to reach the desired temperature depends on the heating power. This is an important factor, especially for hungry and crying babies.

The heating power varies greatly from one device to another. The heating time can vary between three and ten minutes. However, the speed is not always right.

The food must be heated slowly and carefully to the desired temperature so that micro- and macronutrients are not destroyed. This is especially true for frozen breast milk.

Suitable for use when travelling

So that you don’t have to do without a bottle warmer when travelling, there are now adapters for car lighters. This means that you can use electrically powered bottle warmers when travelling.

These adapters are often available together with the bottle warmer. Car adapters usually have a power rating of around 100 watts.

Another way to keep it mobile is to use a bottle warmer with a cylindrical stand that runs on a battery or rechargeable batteries. These models do not need a car adapter. This gives you even more independence and flexibility.

So that you don’t have to do without your bottle when you’re not at home, devices have been developed that you can easily use on the go.

More facts about bottle warmers

How long can food stay warm in a bottle warmer?

You may have already prepared a bottle, but it needs to be repacked first. To prevent the food from getting cold again, the bottle warmer has a temperature keeping function.

Bottle warmer don't reheat leftovers
For all foods, the rule is that you shouldn’t reheat them if they are meant for your baby.

However, you should be careful not to leave the bottle on too long before giving it to your baby. If you keep it at too high a temperature for too long, nutrients can be lost. On the other hand, bacteria and germs can accumulate in it, which can be dangerous for your baby.

It is advisable to keep food that has reached a certain temperature warm for a maximum of one hour. In summer, this period is even shorter. In addition, food that has already been warmed up should not be reheated but thrown away.

You don’t have to worry so much about tea or water. Also you can drink them for longer. You can also keep unopened jars warm for longer, as well as milk.

To be on the safe side, you should always prepare a fresh bottle and give it to your baby immediately. This way you can be sure that the food is at the right temperature and does not contain harmful bacteria or pathogens.

How do I clean my bottle warmer?

Bottle warmers should be cleaned regularly with water and descaled. If you don’t clean the warmer, limescale will build up. Limescale deposits can cause the bottle warmer to stop working properly.

However, you should be careful not to use harsh descaling agents, such as vinegar extract, to remove the deposits. Instead, use a 2:1 mixture of water and household vinegar.

Pour the mixture into the tank of your machine and let it run for about 15 minutes. Then wipe dry. Done.

To prevent limescale from building up too quickly in your bottle warmer, empty it and clean it thoroughly after each use.

But it’s not just the bottle warmer that needs regular cleaning. Since your baby’s immune system is not yet fully developed, you should always wash the bottles and teats. This protects your baby from harmful bacteria that can cause gastrointestinal infections.

To maintain hygiene, you should wash the dishes regularly with hot water and a little washing-up liquid.

Milk bottles in particular should be kept hygienic and washed thoroughly after each use. You can use a normal toothbrush to remove milk residues.


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