• Bosch 300 Series SHXM63WS5N

  • How We Tested

  • Why Do People Like Bosch Dishwashers?

  • What Does dBA Mean?

  • Other Bosch Dishwashers We Tested

  • More Articles You Might Enjoy

Bosch 300 SHXM63WS5N
Credit: Bosch / Reviewed
Best Overall
Bosch 300 Series SHXM63WS5N

The Bosch 300 Series continues to offer the same sleek look, quiet operation, and incredible cleaning prowess that Bosch is known for. We tested the Bosch SHXM63WS5N, which removed nearly 100 percent of the stains on the Quick, Normal, and Heavy cycles, an amazing feat that happens rarely in our test labs.

On top of that, this dishwasher also has a third rack, foldable tines, an adjustable upper rack, solid drying, and an optional water softener. This dishwasher is worth every cent, and even offers more color choices than the pricier 500 Series.

Pros

  • Great cleaning performance

  • Very well-designed

  • Great features

Cons

  • Very expensive—costs over $1000

How We Tested

The Testers

Hello! We're Reviewed's appliance testing team: Jon Chan, Kyle Hamilton, and chief scientist Julia MacDougall. We've spent many years testing major appliances including washers, dryers, refrigerators, dishwashers, vacuum cleaners, and robot vacuum cleaners.

We have plenty of experience testing these products in the lab, but we've also used them outside the lab environment—just like you would in the course of your daily life. This combination helps give us a good sense for which appliances have really useful extra features, as opposed to the kitchen-sink approach to features. Our years of experience and data also gives us insight into how much performance you should expect for your money, which allows us to single out great bargains.

Testing dishwashers is a dirty job, and we're happy to do it. We assess each dishwasher on the three major parts of the dishwasher experience— Performance, Features, and Usability.

Performance

Stain removal —We put the three major cycles on a dishwasher (Quick, Heavy, and Normal) to the test by baking food and beverage stains—including milk, spinach, egg, oatmeal, meat, and more—onto 15 to 20 dishes that are then loaded into the dishwasher per the manufacturer's loading directions. At the end of each cycle, we determine how much stain has been removed from each dish. Ideally, each dish is 100 percent clean, but that level of cleaning perfection can be harder to achieve in real life.

RedepositRedeposit is the term for when, during the course of a dishwasher cycle, water jets remove bits of food from one dish, only to accidentally get it stuck on a second dish. Any dishwasher that shows little to no evidence of redeposit is a winner in our book.

Number of dirty dishes —After a dishwasher cycle has finished, we count the number of dishes that are not 100 percent clean; if your dishwasher can't clean most of your dishes the first time, it's not doing its job correctly.

Cycle Time —Dishwasher cycles can run the gamut from 30 minutes to four hours. Shorter cycle times are much more convenient, especially when it comes to large dinner parties, where you may need to reuse dishes from dinner when it's time for dessert.

Drying —Whether it's accomplished with rinse aid, a built-in heater, or a built-in fan, customers expect their dishes to be dry as well as clean. We penalize the dishwasher every time a dish comes out wet, whether it's sopping wet or just covered in a few water droplets.

Dishwasher_testing
Credit: Reviewed.com / Julia MacDougall

Features and Usability

While all of the features in the world can't make a bad dishwasher better, they can really add the finishing touch to a dishwasher that does a killer cleaning job. We look at the various cycles, cycle options, and dishwasher specs and assess both how useful the features are, and how easy it is to actually use those features.

For example, a third rack that primarily holds cutlery can often be a game-changer when it comes to freeing up valuable real estate in the bottom rack. However, if the third rack is rickety, doesn't slide smoothly, or prevents the dishwasher from actually cleaning the cutlery, we would penalize the dishwasher, rather than reward it just for having a third rack. The whole point of a dishwasher is to save you from having to spend time scrubbing every dirty dish by hand; if a particular feature isn't going to make the process of using a dishwasher better or easier, then we don't want it.

The best dishwashers have short cycles, superior stain removal and drying power, and features that make the experience of using a dishwasher a painless one.

Bosch_third_rack
Credit: Reviewed.com / Matthew Zahnzinger

Why Do People Like Bosch Dishwashers?

Bosch occupies an enviable location in the dishwasher market—in the sweet spot for four different facets of a dishwasher: performance, noise, aesthetics, and price.

Performance

We're always impressed by how well Bosch dishwashers can clean our test dishes; almost every dishwasher on this list removed more than 99% of stains on all three of the cycles we test: Quick, Normal, and Heavy. While you may be thinking, "Well, obviously a dishwasher should be able to get my dishes 100% clean," that isn't always the case in real life, especially when it comes to the Quick cycle. The dirty dishes we use for the Quick cycle are the same as those we use for the Normal cycle, and the Quick cycle has a much shorter cycle time in which it can get the dishes as clean as it does on the Normal cycle.

Also, our test stains are harder to remove than most food stains because of the food types themselves and the fact that they've been baked onto our test dishes. We want to give each dishwasher a "worst case scenario" for dirty dishes to see if they will rise to the occasion. To make a long story short, a brand having multiple dishwashers capable of removing more than 99% of our food stains is no small feat.

Noise

Bosch was one of the first companies to really push the quiet dishwasher trend. This goes hand-in-hand with the recent trend of open-floorplan homes, where kitchens often flow, without walls, straight into entertainment spaces like the living room or the dining room. The lack of walls can prove problematic if your dishwasher is chugging along while you're trying to have a conversation. The more expensive the Bosch dishwasher, the quieter it is; the Bosch 800 series dishwasher we tested has a sound rating of 39 dBA, which is similar to the average noise level in a library.

Aesthetics

Bosch prides itself on its streamlined but functional looks. Most models offer pocket handles and top-mounted touch controls so that, from the front, there's nothing to break up the clean lines of the dishwasher's stainless steel finish. Unsurprisingly, though, at lower price tiers, Bosch tends to favor function over form, and front-mounted controls with handles become more prevalent.

Price

As you might expect, the price of a top-of-the-line Bosch dishwasher is probably going to come in at a number that has three zeroes at the end of it. At this price tier, you'll get great cleaning performance, quiet operation, neat extra features, and magazine-level design and finishes. However, that's not to say that you're out of luck if your budget is smaller; Bosch has a number of different options at a variety of price points.

Even better, we don't see a major performance drop off at lower price tiers—the Bosch 100 series dishwasher, which is the most affordable series of the bunch, removed more than 90% of our food stains on the Quick cycle, and did even better on the Normal and Heavy cycles. Yes, the dishwasher is louder, has a front-mounted control panel, and doesn't have a metal stainless steel finish (rather, it has a matte stainless steel finish), but the essential Bosch flavor and performance level is still there. If you have a relatively healthy budget, you should be able to easily pick the Bosch model that fits your kitchen, floor plan, and demand for dish cleanliness.

Note: If the prices of the most affordable Bosch dishwasher models are still not in your price range, check out our list of the most affordable dishwashers.


What Does dBA Mean?

When you see the dBA abbreviation, that is referring to "A-weighted decibels", which is the unit that dishwasher manufacturers use to measure how loud a dishwasher is during its operation. You've probably heard of decibels as a measure of loudness before, but the "A-weighting" basically refers to the fact that certain frequencies are more easily perceived by the human ear than others; for instance, a flute solo sounds louder than a bass solo played at the same volume because the human ear is naturally more attuned to mid- and high-range frequencies than it is to bass-range frequencies. As a result, when manufacturers report how loud a dishwasher actually sounds to someone in the same room of the dishwasher while it's turned on, they report that number in terms of A-weighted decibels (dBA), rather than just decibels (dB).


Other Bosch Dishwashers We Tested

Bosch SHPM88Z75N

The Bosch 800 Series SHPM88Z75N (2019) is everything we've come to expect from Bosch—quiet, efficient, and stylish. With a sound rating of 40 dBA, it's one of the quietest dishwashers that's ever come through our labs. This dishwasher did an amazing job removing some of our more difficult stains, like burnt-on cheese and spinach; however, as is the case with most dishwashers, the spinach that got blasted off of our test dishes was occasionally redeposited onto other dishes.

The major selling point of the SHPM88Z75N is its CrystalDry feature. Using zeolite crystals, this dishwasher completely dries all of your dishes, even the plastic tupperware that always seems to need a couple of passes with a dish towel before you can put it away. If your primary method of storing food is with plastic food storage containers, the SHPM88Z75N will save you a lot of extra time and effort when it comes to getting your dishes clean and dry.

Bosch Benchmark SHE89PW55N

The Bosch SHE89PW55N is one of the models in Bosch's flagship Benchmark series. While the Benchmark dishwashers may cost a lot more than other Bosch dishwashers, they do offer some niceties for more discerning customers. In addition to a 39 dBA rating—one of the quietest dishwasher ratings we've seen—the Benchmark series offers panel-ready designs, LCD touchscreens, telescoping racks, a deep third rack, and bright interior lighting.

When it comes to performance, though, the SHE89PW55N is a real marvel. Not only were the Normal, Quick, and Heavy cycles all equally effective at removing more than 99 percent of all stains, but the cycles are also extremely efficient; they all use very little water and electricity. While you'll pay more upfront for this dishwasher, you'll end up saving yourself from dirty dishes and high utility bills.

Pros

  • Amazing cleaning—one of the best we've tested

  • Clean, modern design

  • Runs at a virtually-inaudible 39 dBA.

Cons

  • Its price-to-performance ratio isn't great

  • Its huge list of configurations can be confusing

Bosch 100 Series SHEM3AY52N

If you want a Bosch dishwasher, but you're on a strict budget, look no further: the Bosch SHEM3AY52N, part of Bosch's 100 Series line of dishwashers, gives you all the cleaning performance you need at a price you can afford. With a noise rating of 50 dBA, it's a bit louder than other Bosch dishwashers on the market, but we didn't find the sound very noticeable during testing. For best stain removal results, we recommend using the Normal and Heavy cycles, which do a great job at getting rid of really tough stains.

While the dishwasher's control panel is basic, you can use the buttons to access a number of different wash and cycle options. This model comes in black, white, and stainless steel finishes, but the stainless steel finish, unsurprisingly, costs a bit extra. Lastly, while this dishwasher doesn't have a true third rack, it does have a small utility rack that sits atop the second rack, and is large enough to fit ladles, short glassware, or more cutlery. Bosch's 100 Series dishwashers make some of the best Bosch features available to those who couldn't afford them previously.

Pros

  • Great cleaning performance

  • Great features

Cons

  • Too expensive for what it offers

  • Confusing controls

Meet the testers

Mark Brezinski

Mark Brezinski

Senior Writer

@markbrezinski

Mark Brezinski is a senior writer with seven years of experience reviewing consumer tech and home appliances.

See all of Mark Brezinski's reviews
Julia MacDougall

Julia MacDougall

Senior Scientist

@reviewed

Julia is the Senior Scientist at Reviewed, which means that she oversees (and continually updates) the testing of products in Reviewed's core categories such as televisions, washing machines, refrigerators, and more. She also determines the testing methods and standards for Reviewed's "The Best Right Now" articles.

See all of Julia MacDougall's reviews
Cindy Bailen

Cindy Bailen

Editor

@orangesandlemon

Cindy Bailen loves writing about major appliances and home design and has spent over 15 years immersed in that. In her spare time, Cindy hosts pledge programs for WGBH-TV in Boston and other public television stations.

See all of Cindy Bailen's reviews

Checking our work.

We use standardized and scientific testing methods to scrutinize every product and provide you with objectively accurate results. If you’ve found different results in your own research, email us and we’ll compare notes. If it looks substantial, we’ll gladly re-test a product to try and reproduce these results. After all, peer reviews are a critical part of any scientific process.

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