In-depth baby product reviews led by a Pediatrician

Grownsy Fast 5-in-1 Review

Affordable warmer with simple controls but below average performance
Grownsy Fast 5-in-1
Credit: Grownsy
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Price:   $29 List
Pros:  Inexpensive, easy to clean, simple to use
Cons:  Inefficient, difficult to understand instructions, no auto-shutoff
Manufacturer:   Grownsy
By Abriah Wofford ⋅ Senior Review Editor  ⋅  Oct 8, 2020
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51
OVERALL
SCORE


RANKED
#10 of 13
  • Warming Efficiency - 25% 5
  • Ease Of Use - 30% 4
  • Health/Safety - 40% 6
  • Ease of Cleaning - 5% 5

The Skinny

The Grownsy Fast 5-in-1 is a product that has multiple settings for heating your baby's food at a convenient speed. It can also warm baby food and act as a sterilizer for bottles or pacifiers. Utilizing both steam and water bath technology, this affordable warmer packs in a lot of versatility. However, during testing, we found that all of its functions perform slightly below average compared to other products. For these reasons, we were less than impressed with the overall performance of the Grownsy, and we recommend checking out other bottle warmers before making your final decision.

Compare to Similar Products

 
Grownsy Fast 5-in-1
Awards  Best Value Award Top Pick Award   
Price $29.00 List$35.00 List
$34.99 at Amazon
$20.00 List
$17.97 at Amazon - 10% off
$24.00 List$21.00 List
$20.75 at Amazon
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Pros Inexpensive, easy to clean, simple to useSimple, safe, keep bottle warm for up to an hourInexpensive, travel friendly, easy to useEasy to use, very few parts to clean, fast warm timeInexpensive, fast, quick second bottle heating
Cons Inefficient, difficult to understand instructions, no auto-shutoffSlowerNo auto-shutoff, only works for one bottleNo auto-shutoff feature means it is too easy to overheat milkToo hot, hard to fill vial, gross build up
Bottom Line Affordable warmer with simple controls but below average performanceExcellent value with a simple design that is easy to useAn innovative way for on-the-go families to heat baby's milkNot recommended because it is missing an auto-shutoff feature to help avoid accidentally overheating the milkInexpensive, fast heating warmer with serious health and safety issues
Rating Categories Grownsy Fast 5-in-1 Chicco NaturalFit Tommee Tippee Trave... Tommee Tippee Easi-... Munchkin Speed
Warming Efficiency (25%)
5.0
6.0
6.0
5.0
9.0
Ease Of Use (30%)
4.0
9.0
6.0
6.0
4.0
Health Safety (40%)
6.0
7.0
7.0
4.0
1.0
Ease Of Cleaning (5%)
5.0
5.0
9.0
7.0
6.0
Specs Grownsy Fast 5-in-1 Chicco NaturalFit Tommee Tippee Trave... Tommee Tippee Easi-... Munchkin Speed
Heat Technology Steam/Water Bath Water Bath Water Bath Water Bath Steam
Temp or Timer Based Have to manually turn off Temperature N/A Have to manually turn off Timer
Auto Shut Off No Yes No No Yes
Audible Beep No Yes No No No
Water Resevoir No Yes No No No
Wide Bottle Capacity yes Yes Yes Yes Yes
Compatible w/ Glass Yes Yes Yes Yes Yes
Compatible w/ Breast Pump Bags No No Yes No No
Time to Warm to 99F 12:00 min:sec 9:15 min:sec 5:38 min:sec 5:20 min:sec 3:05 min:sec
Wait Time Between Warmings Not Listed Allow bottle warmer to cool completely (approx 30 min) None Not listed 5 Minutes
Dimensions 6"H x 4.75"L x 4.75"W 6"H x 5.5"L x 5.25"W 7.75"H x 3.5"L x 3.5"W 6"H x 4.5"L x 4.5"W 5.5"H x 5"L x 5.5"W
Temp. & Time at Auto Shut-Off w/ Warmer Chart Recommended Setting (4oz Refrig. Milk in Glass w/ Silicone Sleeve) NA 9:00 min:sec 94F NA NA 2:35 min:sec 93F
Max Temp if Left in Warmer 12 minutes 90F 104F 111F 131F 130F

Our Analysis and Test Results

Founded in 2015 in Los Angeles, California, Grownsy is a company that has a small selection of baby products designed to simplify the parenting process. They make two other bottle warmers with varying capabilities. The Fast 5-in-1 is the most basic option offered.

Performance Comparison


The Grownsy can be used with or without the plastic lid.
The Grownsy can be used with or without the plastic lid.
Credit: Abriah Wofford

Health and Safety


The Grownsy Fast earned an average score for health and safety. It has the option to heat via water bath or steam, depending on the rate you want your milk to warm. Grownsy recommends the water bath function for a slow and steady method, which we also prefer. When using this setting, the milk temperature never rose above 90F; however, it took a full 12 minutes to get there. We think this is much longer than most parents will want to wait, and many may find it tempting to use the fast warm function. If you choose to go this route, you must be very attentive. In our tests, the temperature quickly rose to the ideal 99F. However, if left for just a few minutes too long, the milk soon jumps to well above 104F, at which point breastmilk will start to lose essential nutrients. At the end of our 12 minute test period, the highest recorded temperature was nearing 160F. Much too hot to be safely handled and past the point of nutrition degradation. Without a beep or auto-shutoff alert, you may end up wasting a full bottle of milk.

The Grownsy has a simple dial operation with symbols representing...
The Grownsy has a simple dial operation with symbols representing different warming cycles.
Credit: Abriah Wofford

Ease of Use


With only one dial, you would assume that operation would be simple. However, the symbols are not very explicit or intuitive. We found the instructions to be full of grammatical errors and misspellings, making them very difficult to follow overall. We were scratching our heads trying to figure out which setting to use, how much water to fill, and when to remove the bottle. The max fill line is in Chinese, and there is no timed shutoff and no audible signal to let you know when a bottle is ready. There is only a safety shutoff to prevent the machine from heating when there is no water left.

The Grownsy was one of the slowest products when it came to warming...
The Grownsy was one of the slowest products when it came to warming 400ml of milk in a glass bottle.
Credit: Abriah Wofford

Warming Efficiency


We put each machine through multiple rounds of heat testing to measure their efficiency and functionality. The Grownsy had a below-average warm time. It took 12 minutes to reach 90F when following the manufacturer's recommended settings. There is no auto-shutoff, but at this rate, parents will likely take the bottle out well before there is a risk of overheating.

A chemical descaler is included when you purchase a Grownsy bottle...
With a total of three parts, the Grownsy is relatively simple to...

Ease of Cleaning


The Fast bottle warmer has 2-3 parts that need cleaning, depending on the warming method you use. The cleaning instructions are minimal, only noting to let the warmer cool and then wipe it with a damp rag after use. The removable parts may be hand-washed, but there is no statement noting whether they are dishwasher safe. You should descale every four weeks, and a chemical descaler comes with the package to get you started. Grownsy notes that you can also descale with a white vinegar solution. However, the instructions are crammed with grammatical errors and confusing sentences, turning a simple process into a complicated experience.

Manufacturer Video



Abriah Wofford