Best Bottle Warmers of 2025, Tested & Reviewed

#1. Grownsy 5-in-1	★★★★★★★★★★ (10/10)	Our favorite overall, this is a versatile 5-in-1 system with fast warming, sterilization, and food heating; it's reliable, intuitive, and budget-friendly.
#2. Kiinde Kozii Safeheat Pro	★★★★★★★★★★ (10/10)	Gentle warm bath system preserves nutrients; simple one-knob interface with premium build quality.
#3. Kiinde Kozii Original	★★★★★★★★★☆ (9/10)	Reservoir-free system with wide compatibility; some overflow risk but great for breast milk and formula.
#4. Philips AVENT Fast	★★★★★★★★☆☆ (8/10)	Simple and effective warming pot with wide compatibility; no timer alert but reliable and affordable.
#5. First Years 2-in-1 Warmer and Sterilizer	★★★★★★★★☆☆ (8/10)	Steam warming with built-in cooler; great nighttime solution with easy cleaning and strong performance.

Dealing with breast milk or formula can be complicated and, frankly, sometimes annoying. You make that perfect bottle for your baby, and within 15 minutes, it's no longer warm and your little one refuses to drink! You might be tempted to pop the bottle in the microwave, but the risk of overheating and having plastic chemicals leaching into the milk is too high.

Also, a microwave can break down essential nutrients and overheat breast milk and formula; in contrast, a bottle warmer will evenly warm the baby's bottle to the perfect temperature and help retain nutritional value.

In-Depth Reviews of the Best Baby Bottle Warmers

1. Grownsy 5-in-1 Baby Bottle Warmer.

Earning the top spot on our list is this amazing 5-in-1 Grownsy bottle warmer! This relatively new bottle warmer is simple, easy to use, reliable, efficient, and very reasonably priced at about $40. Even better, it fits wide Tommee Tippee, Comotomo, and AVENT bottles perfectly, as well as taller (9-ounce) Dr. Brown's bottles, all without any issues. It provides five core features: fast bottle warming, normal bottle warming, defrosting, food heating, and sterilization. In our testing, we tried out all the settings. Fast bottle warming works by rapidly warming refrigerated or room temperature milk in 2.5 to 7.5 minutes depending on how much milk is in the bottle and what the starting temperature is. A convenient table in the instruction manual provides an easy reference. You simply place the bottle into the chamber, add the indicated amount of tap or distilled water (40 mL), put on the lid, then press the FAST button and set the timer for the suggested duration. Once it starts, the timer will count down and the system will beep three times to indicate the warming cycle has finished before automatically turning off. This is the same exact process for the defrost mode. The normal bottle warming feature was also easy to use and can provide constant bottle warming at your chosen temperature (typically 40°C or 104°F) for up to 24 hours. The same process works for food heating (just press the FOOD button), and sterilization (just press the STERILIZE button). Intuitive to use and versatile? Count us in!

The sterilize function can do a full 15-20 minute steaming, which works very well with bottles (put them in upside-down to sterilize) and pacifiers. Every other function worked perfectly without any issues and were impressed with how simple it was to use. After a month of daily use with tap water, the inside did develop mineral deposits and needed to be descaled with vinegar. Just like with any bottle warmer or sterilizer, we suggest using distilled water if your tap water has high mineral content (like ours!). We tested the primary function, fast bottle warming, with glass, plastic, and silicone baby bottles; all of them came out at a similar temperature, varying between 99° to 103° F. The only small con is that with taller and narrower bottles, such as a 9-ounce Dr. Brown's bottle, you will need to remove the nipple for the system's lid to close properly (which is necessary for fast warming). Not a huge deal, but worth mentioning. Overall, we love the Grownsy, and think it is an awesome new addition to our list - given the great features and reliability, and the amazing price, we think it's the obvious top pick! Who else considers it a top pick? Our friends at Babygearlab and ScaryMommy! Interested? You can check out the Grownsy Bottle Warmer here.

2. Kiinde Kozii Safeheat Pro.

We were super excited to get our hands on this baby bottle warmer for testing (thanks, Kiinde!). Like a few others on this list, the new Kozii SafeHeat Pro uses a warm bath to produce gradual and gentle convection heating, using lower temperatures than steam-based bottle warmers. The lower temperature helps preserve nutrients in breast milk (vitamins, minerals, amino acids, enzymes, and white blood cells) or baby formula, though it might add a minute or two to the warming cycle. Out of the box, the Kozii SafeHeat Pro feels like a high-quality device - the plastics are good quality, the stainless steel interior lining is smooth and strong, and the lift-out basket and water filler are nicely designed. The lift-out basket allows you to place narrower baby bottles and smaller jars of baby food into the device, without worrying about reaching into the hot water to retrieve it. The water filler hangs on the back of the warmer and provides graduated markings to help you fill with the appropriate amount of water; distilled water is preferred, of course, however, you can use regular tap water with regular (e.g., once a month) descaling. The beauty of a warm-bath style bottle warmer is that they have no hidden nooks and crannies and are very easy to clean.

The operation was very simple, there is one single knob on the front that allows you to set the number of minutes to warm its contents. The manual provides a very easy-to-understand guide regarding the type of item being warmed (milk, food), the starting temperature (refrigerated, room temperature), and the material (glass, plastic, or breast milk storage bag); based on these factors, the manual gives you a recommended number of minutes to achieve an ideal temperature of about 104° F. Once the timer expires, the system automatically shuts off. We appreciated the wide opening that could fit AVENT, Comotomo, Tommee Tippee, and other relatively wide baby bottles. It could also easily fit a Medela breast milk storage bag without issues. Taller bottles, like a 9-ounce Dr. Brown's bottle would stick up a bit over the top (the top of the milk was about a half inch over the water line), but this didn't lead to any warming issues. The only cons are relatively minor: there are no special settings for defrosting, and the price is somewhat high given the features. Overall, we love the new Kiinde Kozii SafeHeat Pro and are excited to be the first major website to review it! Interested? You can check out the Kiinde Kozii SafeHeat Pro Bottle Warmer here.

3. Kiinde Kozii Baby Bottle Warmer.

This Kiinde Kozii bottle warmer is unique in comparison to some others on our list, as it uses a different filling and heating technique. For this system, you fill up a reservoir underneath the warming pot, and then when you turn it on, the water level rises up to surround the bottle. This is an interesting setup because it doesn't require filling a reservoir on the side and relying on tubes and other mechanisms to store and move the water, so there is less risk of grime and scale build-up. However, we wouldn't leave water sitting down in the reservoir without using it for over 24 hours, as it's likely to get a little funky down there. To be fair, the water never comes in contact with the formula or breast milk, only the side of the bottle.

In any event, this system uses a knob with multiple time settings ranging from 1 to 15. To figure out how many minutes you actually need to heat your bottle, they include a handy little chart (which we copied below). Basically, you're looking at 5-8 minutes to warm a 4-8-ounce bottle, which is right on par with the other systems on this list. We made a big mistake when using this system, however, that we want you to avoid! We made the mistake of pulling a bottle out after a couple of minutes to check its temperature. What happens when you pull it out early is that the system thinks the water level is too low and starts to pump more water into the pot. Then, when you put the bottle back in, the entire system overflows onto the counter. That was annoying and a little dangerous given that it's really hot water. Overall, this is a pretty great bottle warmer, save for some minor issues. Who else recommends the Kiinde Kozii? Our friends at Babylist, Babygearlab, What2Expect, and The Bump all consider it a top pick! Interested? You can check out the Kiinde Kozii Bottle Warmer here.

4. Philips AVENT Fast Baby Bottle Warmer, Fast.

This is a very similar concept to the First Years baby bottle warmer. Like the First Years, it uses a little pot for warming up the bottle, rather than steam, making it much easier to clean and maintain. In our tests, the pot worked very well for warming up bottles of formula or breast milk, and we never had any issues with the milk being too cool or hot after warming. To use the system, you place the baby bottle into the pot and then add enough water to fill the reservoir up to the same level as the level of milk in the bottle. If the bottle is completely full, you can fill the reservoir up to about 1 cm below the top of the reservoir. It has different heat settings based on how much milk is in the bottle.

To warm 4 ounces of refrigerated milk, we put it on the first setting and it took about 4 minutes to get it to the proper baby milk temperature (we checked it with one of our baby thermometers). To warm a larger 8-ounce bottle of milk, it took about 7 minutes on the high setting. When you turn it on, the light turns orange. But you need to pay attention to it, as the system has no audible beep function when the timer finishes. Instead, you need to read the chart in their owner's manual to figure out how long to warm the bottle, and then come back to it after that many minutes. Overall, this baby bottle warmer is pretty simple and basic but it's also cheap, coming in at around $35, so maybe that makes up for the lack of features. By the way, we found that this particular bottle warmer was able to fit our widest Tommee Tippee, Baby Brezza, and Comotomo baby bottles, which was awesome! Who else recommends the Philips AVENT Bottle Warmer? Our friends at Babylist, Babygearlab, WhatToExpect, and The Bump all consider it a top pick! Interested? You can check out the AVENT bottle warmer here.

5. First Years Fast Bottle Warmer & Sterilizer.

The new and improved First Years Bottle Warmer & Sterilizer takes an affordable, no-nonsense approach to bottle warming. Retailing for around $20–25, it combines a simple steam-based warming system with a small sterilizer basket for pacifiers and bottle nipples. Setup is straightforward: fill the included measuring vial with the right amount of water (based on your bottle size and temperature), pour it into the heating well, place your bottle in, and press the single button to start. The unit automatically shuts off when the heating cycle is complete, and a small indicator light helps you know when it’s finished. It’s compatible with most bottle styles: standard, wide-neck, angled, and even tall bottles like Dr. Brown’s. It doesn’t require a bulky water reservoir or tube system that can trap gunk over time. For cleaning, the vial, adapter ring, and small basket are all top-rack dishwasher safe, and the heating plate is easy to wipe down after use.

In our hands-on testing, the Simple Serve performed well for the price, especially for parents who want quick warming without a complicated interface. When starting with a 4-ounce refrigerated formula bottle, our test bottles reached about 99°F on average, comfortably warm and safe for feeding. That said, we did notice some inconsistency: running the same bottle twice sometimes produced slightly different results (a few degrees warmer or cooler), so a bit of trial and error was needed to find the perfect water fill level for each bottle type. The warmer was most consistent with plastic bottles; glass bottles tended to heat more quickly and could get a bit too warm if left sitting afterward. We appreciated the auto-shutoff feature for safety and the simplicity of one-button operation, though we do wish there were a way to stop or reset the cycle mid-run. The included sterilizer basket worked nicely for sanitizing pacifiers between uses, though it’s too small for larger items.

Compared to more expensive digital or reservoir-based warmers, the Simple Serve stands out for its compact size, lightweight design, and easy maintenance. It’s perfect for nightstands or small countertops, and because it uses measured water each time, you don’t need to worry about cleaning internal tubing or mold buildup. The only real downsides are its slower warm times (around 6–8 minutes from fridge temperature) and the need to measure water precisely: too much water can cause bottles to overheat or overflow. Still, for parents looking for an inexpensive, reliable, and travel-friendly warmer with basic sanitizing ability, the First Years Simple Serve is one of the best values on the market. Interested? You can check out the First Years Simple Serve Fast Bottle Warmer here.

6. Tommee Tippee Bottle and Food Warmer.

This bottle warmer uses an entirely different concept than the other ones on our list, and it is specifically designed for travel. You don't need to plug it in, and it's highly portable, fitting nicely into a diaper bag or large purse without any issues. When we first received it, we thought it seemed really complicated, but then realized it's actually very simple. The system comes with three parts: a stainless steel thermos, a thermos cap, and an opaque plastic water reservoir. Here's how you use it: you fill the thermos with boiling water and close the lid. Then, you slide the plastic reservoir over the top of the thermos and screw it on. Pop it into your diaper bag or car, and go about your day's adventure. When you're ready to feed your baby, dump the thermos into the plastic reservoir to make a pot of hot water. Take your Tommee Tippee bottle (or your bottle brand of choice, it is wide enough for basically anything!) of breast milk or formula and stick it into the pot of hot water. Wait about 3-4 minutes and you will find that your bottle of milk is at a very nice temperature for feeding.

We tried it out after a couple of hours, and then we tried it after about 11 hours of the water being in the thermos... it was still quite hot and still worked like a charm. A couple of downfalls: first, you need to bring the bottle of milk separately wherever you're going, probably in a cooler pouch, since it doesn't fit anywhere in the system until you're ready to warm it up. Second, it's bigger than we thought it would be and doesn't fit in the car cup holder (too wide). Third, the plastic reservoir that you put the hot water into when you're ready to warm the bottle gets very hot, so have a flat surface to put it on without needing to hold it. Overall, this is a great travel option with some small limitations. Cheap too, coming in usually around $15 or so. Who else recommends the Tommee Tippee bottle warmer? Our friends at Babylist, Babygearlab, WhatToExpect, and The Bump consider it a top pick! Interested? You can check out the Tommee Tippee bottle warmer here!

7. Dr. Brown's Deluxe Baby Bottle Warmer and Sterilizer.

We only recently got our hands on this Dr. Brown's baby bottle warmer for testing, and we were excited to give it a try. It's one of the few baby bottle warmers on the market that can fit the tall Dr. Brown's glass baby bottles (see our list of best baby bottles here!). Using an adjustable bottom basket, it can fit both those really tall and narrow bottles, but also wide mouth bottles, and even jars of baby food. In our testing, however, it couldn't fit some of the really fat bottles, like the Tommee Tippee or Comotomo. With a design a little like a Keurig, the Dr. Brown's has a small refillable water reservoir on the side that holds enough water for about 5-6 bottle warmings. That's a nice touch, allowing you to fill it up once every few days rather than having to fill and empty it every time you use it like some of the others that are lower down on this list. However, as we mentioned earlier, any bottle warmer with a reservoir system can be difficult to clean. In our testing, we found it to be super fast at warming bottles from the refrigerator or freezer.

Out of the fridge, a 5-ounce bottle took about 3-4 minutes to warm up, and out of the freezer it took about 6-7 minutes. Another feature we liked is that it remembers the last setting you used - so if the last time you warmed it for 4 minutes, it will default to that setting the next time you turn it on. So that's pretty convenient. But in our testing, we found that the warming was sometimes unreliable. In some cases, we'd get a bottle that was still too cold, and in others, it would be too hot, even when warming for the same amount of time and using bottles that were stored in the refrigerator for the same amount of time. So that got frustrating. We also found that this unit can build up scum in the bottom basket faster than many other units we tested, but realistically this is to be expected with any unit unless you're cleaning it out every couple of days (which we suggest doing). So overall, this is a great bottle warmer, save for some little issues. But for only about $35 online, we are willing to deal with the drawbacks! Who else recommends the Dr. Brown's bottle warmer? Our friends at Babylist, WhatToExpect, and The Bump consider it a top pick! Interested? You can check out the Dr. Brown's Baby Bottle Warmer here.

8. The First Years Quick Serve Bottle Warmer.

This basically a cheaper and simpler version of the Night Cravings bottle warmer. Coming in at only around $15, this does the job when you want a quick and easy bottle warmer. Like its big brother, the Night Cravings, it uses measuring vials to add the right amount of water to the pot, includes a baby food warming attachment, and uses a one-button operation. It also fits most bottles, both wide and tall, but we did manage to get a short/wide Tommee Tippee bottle stuck down in it, which was a little challenging to get out. In contrast, an excessively thin and tall bottle will cause the steam to escape a lot from the sides, making it difficult to reach in to touch-test or swirl your bottle without getting your hand into hot steam. Not quite as reliable or consistent as the others on this list. If you need an inexpensive solution that does a pretty reasonable job, this is a great bet.

How to Pick the Perfect Bottle Warmer

Types of Bottle Warmers: There are three main types of baby bottle warmers. First, there is the typical home bottle warmer system that sits on your kitchen counter and uses steam to warm up your baby bottle. Second, there is the home bottle warmer system that involves heating a pot of water that your bottle sits in. Third, there is the travel bottle warmer that either plugs into your vehicle or relies on a thermos that you fill with hot water in the morning. Most parents buy the second and third options, to have the flexibility of a home bottle warmer and travel bottle warmer.

Mold and Slime: Many of the bottle warmers that use steam have a reservoir that you fill with water (like a Keurig), and parents report that those tend to get pretty disgusting and slimy/moldy if they are not cleaned every few days. This is especially the case when your household has hard water. We suggest using the type that involves placing water into a little pot and then placing the bottle in with it; then you have no reservoir and tubes to get all gunked up. Either way, you'll need to clean your baby bottle warmer on a regular basis. Most manufacturers suggest using white vinegar to descale the water reservoir, and we find that it tends to work pretty well (especially if you let it sit and soak for about an hour).

Safety and Milk Temperature: Heating a bottle full of milk is a tricky problem because you want the bottle to be just a bit higher than the baby's body temperature (about 98.5 degrees Fahrenheit, or 37 degrees Celsius). Many warmers will overheat the milk and then you have to wait again for it to cool down. This happens a lot when you're warming a bottle that is filled to a level that doesn't fit the warmer's settings (usually they have a couple options, like 4oz or 8oz). No matter which bottle-warming technique you're using, to reduce the risk of burns always check the temperature of the warmed milk (we like to drip some on our forearm/underside of the wrist) before feeding your baby.

Baby Bottle Sizes: Many bottle warmers tend to cater to the tall and narrow style of bottles. For instance, you can have a hard time fitting wide bottles (like a Tommee Tippee) into a Goloho bottle warmer, because the heating pot on the Goloho is just too narrow. So we suggest getting warmer that will fit a variety of bottle dimensions; you will find that sometimes it takes trying several baby bottles and nipples before finding the best one (see our baby bottle and nipple buying guide), so you want to have flexibility in which ones will fit your new bottle warmer.