An Ultimate And Easy Guide On How To Use Bottle Warmer You Should Know

An Ultimate And Easy Guide On How To Use Bottle Warmer You Should Know

When your baby is suddenly hungry and time is limited, what will you do with the stored milk in the fridge? Most children will prefer milk at a warmer temperature. So, you need to equip a bottle warmer.

Using the device to warm baby bottles is also very simple with the steps:

  • Place the bottle in the warming chamber.
  • Pour water.
  • Program the settings to suit your needs.

Let’s scroll down to the next sections to learn in detail!

How To Use Bottle Warmer?

Reliable guide on using the warming chamber 

Using a baby bottle warmer is easy and won’t take much effort. Manufacturers also often add manuals for first-time parents.

Place an entire bottle of milk in the warming compartment. If you want to make sure water can’t get inside, stick the nipple or cover the lid.

Then, add water to the chamber to the indicated line and then turn the dial to set the mode according to your requirements.

Depending on the model, you will receive different messages when the process is complete. For example, the lights come on, or there is a sound.

To prevent hot spots in the milk, don’t forget to turn the bottle gently before giving it to your baby. To be extra careful, check the temperature on your wrist.

Some helpful tips for using bottle warmers include:

  • Make sure the bottle fits: Since there are so many different bottle sizes, make sure the warmer you choose fits it properly. The good news is that most models on the market are highly compatible with many container shapes and materials.
  • Remove bottle parts while warming: Remove the vent tube and the tube inside the container during the reheating process. It will limit leakage and pressure build-up inside. You can leave the neck of the bottle or nipple loose.
  • Use distilled water: Distilled water can reduce the scale inside the kettle. Children’s retailers often sell this type of drink.
  • Be cautious with glass bottles: Wet glass is very slippery, so use a sturdy handle to make sure you don’t drop it. Do not forget to remove the internal components before placing them in the cavity.

Bottle Warmer Buying Guide

To choose the right bottle warmer, you will need to pay attention to some following factors.

How to buy the best warmers

Heating Bottles Quickly

The time for devices to warm baby bottles should be as short as possible. Plus, it shouldn’t overheat the breast milk. The ideal temperature to maintain is around 98 degrees Fahrenheit.

Suitable For All Kinds Of Baby’s Bottle

You can find quite a few breast milk or formula feeding bottles with different models and features on the market. Each product will have its unique material, shape, and structure.

Some of the most common materials include glass, plastic, or silicone. Different uses will also create different sizes from small, medium to large.

The best bottle warmer should be compatible with a wide variety of product shapes and materials.

Ease Of Maintenance

The warmer should be compact in size for easy storage and handling. Cleaning the product should also not be a job that takes too much of your time and effort.

Cute baby on blue 

Back To Back Heating Options

Sometimes many parents will want to heat more than one baby’s milk bottle if they are the parents of twins or triplets. The device should have a quick reheat feature so that the baby is not hungry.


Price is the top factor that parents will keep in mind when choosing a device for warm bottles. Compared with expensive and high-end appliances, many people will easily select products at a moderate and reasonable price with a budget.

Disinfection Feature

Babies have weak immune systems, so sterilizing equipment should always be done with care. Some devices include a steam sterilization feature for cleaning containers and other baby drinking utensils.

It ensures that any synthetic ingredients will not get into the milk to protect the baby from disease and bacteria.

Other Ways To Warm Milk Bottle

Preparing milk bottles

Warming bottles are a necessity. The digital bottle warmers are a top choice because they’re convenient, easy to use, and easy to adjust to the desired temperature. However, not every family has that device ready at home.

If you need to heat the bottle at home, try one of the following:

On The Stove

Fill the pot with water so that the water level is equal to the height of the milk in the baby food jars.

The first step you need to do is heat the water on the stove. Then place the bottles in warm water to warm them to the ideal body temperature.

The temperature test also has some interesting methods of word of mouth. Instead of using a thermometer, use your inner wrist to measure.

Just put a few drops of water from the bottle onto your wrist. If the temperature is too hot, let the jar cool down a bit. If you feel cold, keep warming the milk.

Rotate the filled bottle evenly throughout the reheating process to maintain a constant temperature.

Going back to the stovetop method, you don’t want the water to get too hot when you use it. Make sure that submerging your fingers in the pot is entirely possible. It’s best to make you feel like you’re lying in a warm and relaxing sauna.

Under The Faucet

Warming milk under warm running water is also a great way.

All you need to do is rotate the baby’s bottle under warm running water for about two minutes so that the heat spreads evenly on the sides. This method is also great for thawing cold milk from the breast.

Yet, it would help if you did not shake vigorously, as it can introduce air bubbles.

With Warm Water

Pour warm water into a bowl or vase. Then put the bottle of milk in it to warm it up. Time should not exceed 15 minutes because it will create a favorable environment for bacteria to grow.

Make sure the water is at a perfect temperature so you can put your hand inside but still heat the cold bottle. When soaking in water, do not forget to cover the bottle with a teat to prevent milk from spilling out.

Once done, shake well to ensure all the milk is at the same temperature.

Watch the video below for a more visual look at warming water in baby bottles.

How About The Microwave?

Never try to heat glass bottles in the microwave; it will only spoil the solution and possibly make your child sick.

The high heat of the microwave will cause the hot spots of the milk to flake and sometimes burn the baby’s mouth. Even when removed, the milk will continue to heat up. It will destroy nutrients in food.

If you don’t have much time to heat the bottle safely, try leaving them at room temperature. It will be a better choice for the baby’s health.


Drinking baby

How Long Can You Leave A Bottle In The Warmer?

It will only take you four to six minutes to warm a baby bottle.

For your crying baby on an empty stomach in the middle of the night, make sure you use a bottle warmer as fast as possible.

The fastest warm-up time for advanced devices is around three minutes, so that it will take you four to six minutes for a warming cycle.

Many devices also can effectively defrost milk or formula baby bottles, but waiting times will be longer. Sometimes you will have to wait twice or more.

One way to speed it up is to lower the warming settings on the device. Many people believe that the ideal temperature for a warming chamber is 98.6°F, but if you drop it to 80°F, the job will still be done.

Do You Put Hot Or Cold Water In A Bottle Warmer?

You should put water in the storage tank or warming chamber.

Most models will require the user to place the bottle in the warming chamber and add water until it reaches the preset line.

Some more modern appliances will come with a water tank that automatically feeds water into the heating chamber.

In the second case, always keep the water tank full. One piece of advice is to always pay attention to the instructions for use that the manufacturer comes with when you make a purchase. It is best to use cold water from the faucet. It will save more time. Basically, this water can’t get into your water tank either.

Is It Safe To Use Bottle Warmers For Formula?

The bottle warmers can be used for both breast milk and formula, depending on your needs.

Choose a device with a defrost feature if you regularly store breast milk in the freezer or refrigerator. It also has the same effect as pre-mixed milk powders. All you need to do is stir the milk as usual before placing it in the machine.

These devices can also warm animal milk, for example, cow’s milk. However, we recommend giving your baby only formula or breast milk until they turn one year old.

For opened formulas, try to use them within 48 hours if refrigerated. The shelf life of ready-to-use powdered milk is only 24 hours in the fridge. 

On the other hand, you can use breast milk for four hours at room temperature, four days if refrigerated, and six months in the freezer.

An electric baby food warmer

Can You Leave The Warmer On All Night? 

Even if your device comes with an auto-shutoff feature, you shouldn’t leave it on all night. 

While many parents prefer to leave the warmer on all night to warm milk faster, this act can be the germ of a fire. Remember that they are not designed to retain heat for long.

Instead, you can use boiling water to speed up the reheating process. Fill an insulated thermos with hot water or empty the faucet early in the day or night for storage.

Can You Warm A Bottle More Than Once?

You can heat the feeding bottle more than once, but they are not safe.

Constantly heating bottles can create an environment for bacteria to multiply and cause illness for your baby. After your baby has finished feeding, you should not heat them. Instead, pour in the leftover milk after 60 minutes of use.

Can You Warm Baby Food In A Bottle Warmer?

Yes, you can. Most reheaters can be used for baby food.

As long as the size of the container matches the warming chamber, nothing can stop you. Before embarking on the test, do not forget to read the manufacturer’s instructions carefully. The reheating process is a safe bet if you can’t find it. 

Don’t forget to test the temperature before feeding your baby.

However, you should not use this appliance to reheat leftovers because they will create conditions for bacteria to multiply. 

The heat should be around 165°F and let them cool to be safe for children. Throw away leftovers instead of reheating. If they don’t contain meat or eggs, you can refrigerate them for up to 48 hours.


The babies tend to drink warmed milk instead of cold milk that has just come out of the refrigerator or freezer. A baby bottle warmer is a perfect choice for busy parents who don’t have much time. 

Bottle warmers are convenient, easy to use, and very affordable. Try them out today! Hopefully, this guide will provide helpful information on choosing the right equipment. Thank you for reading!


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