Bottle Sterilizers Product Reviews

Grownsy 6-in-1 Fast Baby Bottle Warmer and Bottle Sterilizer Review


Even the best bottle sterilizer will have its limitations, but you’ll be hard-pressed to find out what those limitations are with this new model by Grownsy. This is their latest six-in-one model and it comes loaded with a variety of features that allow you to sterilize bottles, warm up baby food, heat bottles, and much more. It’s a great choice if you’re looking for one appliance that can do it all and one that won’t take up too much counter space.

Our Verdict: Parents will be blown away by how versatile this model is. Not only can it sterilize bottles, nipples, bottle accessories, and breast pump parts, but it can also be used to heat up milk, defrost milk and baby food, and keep baby food warm for up to six hours. The machine’s built-in temperature sensors will prevent the machine from overheating milk and baby food. This multitasking multifunctional machine allows you to heat up bottles, sterilize, and defrost milk or food, all at the same time. However, the smaller interior only allows users to sterilize up to two bottles once, which may be a deal-breaker for some parents.

However, many parents are willing to overlook the smaller interior in favor of this machine’s ability to multitask. Can you imagine how much time you’ll save every night? This model is a must-have for any parent looking for a sterilizer that can perform a wide range of functions.

Overview and Features

Most bottle sterilizers will do just that; sterilize bottles. But Grownsy has really outdone themselves with their latest model. In fact, you won’t come across another model that offers this type of multifunction action. This is a very versatile bottle sterilizer that offers a variety of functions that are designed to make your life a lot easier. Not only can it sterilize bottles, bottle accessories, and breast pump parts, but it can also heat up a bottle, keep baby food warm, and more.

Despite the fact that this model can carry out a variety of functions, it’s actually surprisingly easy to use. This is due to the simple controls and the very detailed user’s manual which clearly walks parents through how to use each of the machine’s functions.

Grownsy 6-in-1 Fast Baby Bottle Warmer and Bottle Sterilizer

Our Rating: (4.5/5)


  • Defroster
  • Bottle warming function
  • Will keep baby food warm
  • Sterilizes bottles, pacifiers, teething rings, and breast pump equipment
  • Easy to clean and maintain
  • Short sterilizing cycle


To use this model for bottle sterilizing, you’ll fill up the base with thirty milliliters of water, which is enough to produce an adequate amount of steam to sterilize bottles or heat up milk. This model will sterilize bottles in as little as eight minutes. To learn more click here to read my in-depth guide on sterilizing bottles. Due to the smaller interior, this model can only sterilize two full-sized bottles at a time, which may be a drawback for some potential buyers.

Heating Bottles

This machine can heat up twelve ounces of milk in as little as three minutes, which is pretty impressive. If you’re using a bottle from the fridge then it will take the machine seven minutes to heat up the bottle.


This is another popular function it offers. If you need to defrost breast milk or baby food, this model is up to the task and can get the job done in a matter of minutes.

Baby Food Warmer

Place baby food inside this model and it will keep it at the perfect temperature for a period of six hours. This means you’ll always have food ready and waiting.

Automatic Shut Off

This machine will shut down automatically as soon as a sterilizing cycle is complete. It will also automatically shut off once it has heated up a bottle. This is an important safety feature and one that many competing models lack.



The machine’s interior is highly adjustable so it will work perfectly for any type of baby bottle, whether you have angled, wide mouth, or narrow bottles. However, as I mentioned earlier, this model can only handle sterilizing a couple of bottles at a time.

Multifunction Use

This model allows you to defrost milk, heat up a bottle, and sterilize bottles all at the same time. How’s that for a multitasking machine? If you’re in need of some extra help around the home, this kitchen appliance has got you covered. Prepare for the day by pulling out the amount of breast milk needed, stick it in the appliance for a safe defrosting process, place enough baby food for mealtime in the warming tray, and heat up a bottle and you’re ready to go.

Built-in Temperature Sensor

This model comes equipped with a built-in temperature sensor for improved accuracy and a semiconductor sensing probe for ultimate temperature control. The bottle warmer compartment will safely heat up a bottle to the perfect temperature so it’s ready for your infant in a matter of a few minutes. The included temperature sensors help to prevent food from getting too cold or overheating the food to an unsafe temperature.


This model is made out of food-grade PP safety material.

Advantages and Disadvantages


  • Defrosts breast milk and baby food
  • Heats up milk
  • Sterilizes bottles in just six minutes
  • Will keep baby food nice and warm for six hours
  • Easy to clean and maintain


  • Only one sterilizing cycle to choose from
  • Does not have a drying cycle
  • Can only sterilize two full-sized bottles at a time

Grownsy Bottle Sterilizer Versus Bimirth Bottle Sterilizer and Warmer

Like this model by Grownsy, the Bimirth bottle sterilizer offers a variety of features and can quickly heat up two bottles at once, and can even handle heating up breast milk bags, using its internal temperature sensor to slowly heat the milk to the perfect temperature. It can also heat up baby food or sterilize bottles in a matter of minutes.

However, while this model can keep baby food warm for up to six hours, this competing model cannot and instead, can only heat up cold baby food but it’s not able to maintain the temperature once the heat up process is complete. While the competing model offers some of the same features as the Grownsy sterilizer, it lacks the type of versatility that most parents are looking for. Additionally, you can’t use many of the functions at the same time like you can with this model. Both models are offered at a comparable price, but the competition lacks many of the features that make this bottle sterilizer a best-seller.

Conclusion and Rating

Our Rating: (4.5/5)

GrownsyThis six-in-one model by Grownsy is one of the top-selling bottle sterilizers for a reason. It can heat up bottles and baby food, and keep the food nice and warm for up to six hours. It can also defrost food and breast milk, and of course, sterilize bottles, pacifiers, teething rings, and breast pump equipment. As you can see, this is a very versatile model and one that also has a reputation for power, efficiency, and safety. The machine will automatically shut down once a sterilizing process or warm up process is complete, which will give moms and dads a little peace of mind. I gave this model a rating of four and a half out of five stars.