The Eufy Bottle Washer S1 Pro is an excellent bottle washer that cleans off dried-on milk and tackles hard water stains with its built-in softener. However its size, price, and running costs make it only a real option for those washing bottles and pump parts several times a day.

• Excellent cleaning that gets rid of dried-on milk residue
• Built-in water softener reduces hard water stains
• Customisable cycle timings and a sterile storage mode

• Needs to be positioned near a sink or drain
• Huge and takes up a lot of surface space
• Running costs are expensive

• 

• Built-in water softener

• 3D HydroBlast cleaning Five-layer spray with eight directional jets and 59 nozzles

• 20L capacity Space for up to eight large bottles or four bottles and a pump

When you’re in the newborn trenches, it can be hard to stay on top of the endless washing and sterilisation of baby bottles and breast pump parts. And if you’re exclusively bottle feeding, cleaning them can feel like an absolute chore. It’s why bottle washing systems, complete with drying and sterilisation functions, have become so popular in recent years.

Eufy has got in on the game with the S1 Pro Baby Bottle Washer. This top-heavy unit is essentially a countertop dishwasher for all things baby-related and comes with a hefty price.

But for that price – £399.99, to be exact – you get a smart-controlled bottle washer that apparently cleans where hands can’t, softened water for crystal clear cleaning, 100°C steam sanitation, space for up to ten bottles, and a drying cycle that takes just 40 minutes.

It’s a hefty upfront cost, especially if you’re a first-time parent unsure of how to navigate the complex world of feeding, so I put it to the test to find out whether it’s worth the investment. Here’s what I found.

Design and features

• Built-in water softener
• Sterile storage mode for up to 72 hours

The S1 Pro is a premium unit with thoughtful design considerations that make using it an absolute dream. Built with BPA-free materials, it’s sturdy and sleek – fitting in with most modern kitchens.

The downside though, is that the S1 Pro is massive. Measuring 43.2cm high, 37.3cm deep and 34.5cm wide, it takes up a considerable amount of space in your kitchen. In mine, it took up pretty much the entire countertop on the left-hand side of my sink, where it had to be positioned for the drainage hose, which attaches to the back of the unit, to work. Of course, this is due to the fact that the S1 Pro has impressive capacity – 20L, to be exact – which is considerably more than most competitors at 12L.

Eufy says the S1 Pro can fit up to 10 bottles at a time, but in reality, if you’re using brands like Tommee Tippee, Philips Avent, Mam, or others, you can comfortably fit only eight bottles in the main part. Even then, the washer is suited to the taller bottles, rather than the little ones. However, it will still clean them adequately, which I cover later.

If you’re exclusively pumping or formula feeding, the extra capacity might be tempting, but you’ll want to measure the space in your kitchen beforehand. I’m not sure I’d want the S1 Pro sitting on my countertop the entire time. Fortunately, due to its sturdy design, it is easy to move, although it could benefit from some recessed handles.

The inside of the washer is well designed, and the bottles can be placed at an angle so that the jets can get inside them clearly, and breast pump parts can be placed on the stands inside. There’s also a tiered top rack for teats, dummies, and anything else you may want to wash.

These are then cleaned by the 3D HydroBlast system, which Eufy promises cleans where hands can’t reach. This is thanks to the five-layer spray, eight directional jets, and 59 nozzles that get into all the nooks and crannies of your bottles and pumps, giving you a crystal clear finish.

It also comes with a built-in water softener, which sits inside the detachable water tank. This is a welcome addition – there’s nothing worse than hard water residue being left on newly washed bottles – and as someone who lives in the place with the hardest water in the UK, I was pleased to see this included as standard.

As for modes, the S1 Pro offers three distinct modes: cleaning, sterilisation, and drying. These can be linked together to provide an all-in-one cleaning service or triggered individually to suit your needs. You can also select from a strong or quick service depending on what you need – the strong cycle obviously takes longer and is generally required if you have a build up of milk residue.

Wash modes can be 19, 29, or 59 minutes, sterilisation is 10 minutes, and drying is 40 minutes. However, these can be changed in the app to suit you.

For sterilisation the S1 Pro heats up to 100°C to help you eliminate germs and the drying stage uses two fans to provide 360° coverage that dries your bottles within 40 minutes. There’s also a storage mode that you can enable for 4/12/24/72 hours.

Lastly, the S1 Pro is designed to take Eufy detergent tablets. These slot into the top of the tiered unit. The bottle washer comes with 60 tablets included.

• Excellent cleaning, even of dried-on milk
• Fewer hard water stains
• Fits eight standard bottles, not ten

The S1 Pro looks like a small dishwasher and it acts like one too. The cleaning performance is genuinely unrivaled, as you’d expect for something at this price, and the sterilisation and drying cycles are pretty good too.

To test the performance of the bottle washer, I tried multiple loads across different cycles: auto, strong, and quick. In every test, I found that my bottles – despite some carrying older milk residue – came out clean and dry, bar a few drops on curved edges. The water softener clearly made a difference too – there were fewer hard water stains on things like bottle teats in comparison to other models without the feature, like the Baby Brezza bottle washer. As I mentioned before, as someone who lives in an area with extreme hard water, this was particularly pleasing and a huge tick in its favour.

However, there were still mineral deposits left on silicone pump parts, so the machine isn’t completely perfect. Some of that could be due to the way parts are positioned in the racks, though.

That being said, the Eufy comes out on top when compared to the performance of the Baby Brezza. Bottles are cleaner and drier on all cycles than the Baby Brezza, with the majority coming out hot and dry.

Where condensation was present was either due to curved bottles or the placement of parts. In full loads, where bottles and pump parts are placed together, finding the optimal position for the jets can be tough, but it improves over time as you get used to the machine.

There’s no way you can get ten normal-sized bottles in the washer, though. I managed eight but struggled to find the best position for shorter ones when stacked with the rest. If you’re looking to use this machine, I’d recommend buying a full set of tall 9oz bottles instead to minimise movement mid-cycle.

Ease of use and noise

• Loud on first use only

When I first ran the machine, I was taken aback by how loud it was. But it turns out that the S1 Pro’s initialising noises are isolated to just the first-time use and once up and running, the bottle washer operates at an average of 61dB – not much louder than my actual dishwasher.

Given the size of the machine – and the fact it sits on your kitchen surface – I was quite impressed with that.

As for ease of use, well it’s fairly straightforward. Each mode has a touch-screen button on the machine’s LED screen. Pressing the button for one mode enables/disables it for that cycle and a long press determines how strong the cycle is.

It’s fairly easy to get to grips with it, but I’d recommend syncing the machine up with the Eufy app to get the most out of it – especially if you want to set schedules up, trigger a wash remotely, or tailor the cycle to timings that better suit you and your feeding schedule.

Getting the machine set up on the app is really simple and takes just a couple of minutes.

Price and value

• Expensive at £399.99
• Around £100 every six months to run
• Best for frequent bottle feeding

At £399.99 the S1 Pro is a serious investment – it’s £64 more expensive than the Baby Brezza Bottle Washer Pro, which it outperformed in testing. For that money, you get excellent cleaning, a water softener that makes a real difference, and a large 20L capacity that’s well above what most rivals offer.

However, while the performance of the machine cannot be faulted, the long-term costs of running this machine have to be taken into consideration. The water softener, detergent tablets, descaling tablets, and filter pack will set you back approximately £100 every six months. Eufy includes everything you need to get started, but after 60 washes you’ll find yourself incurring extra costs and the tablets themselves aren’t cheap at £19.99 for 60.

If you’re exclusively pumping or formula feeding and you’re washing bottles and parts several times a day – and you have the space next to a sink – the time you save will inevitably justify the cost.

However, if you – like me – are breastfeeding, giving only a bottle or two occasionally, you’d be better off slaving over the sink rather than putting a dent in your wallet for something you won’t really use.

Should you buy it?

The S1 Pro’s cleaning is hard to fault. Bottles with days-old milk residue came out clean on each and every cycle and it beat the Baby Brezza on both cleaning and drying. The built-in water softener made a real difference, leaving far fewer stains on teats than with machines that don’t have one. At an average of 61dB, it’s also much quieter than expected for something this big.

It’s not perfect though; a few drops of condensation were left on curved bottles and you could see some mineral deposits on silicone pump parts. This could be down to how I positioned them, of course, but it’s worth mentioning.

My biggest issue with it, though, is the size and its running costs. It took up the whole countertop to the left of my sink, which was quite inconvenient and its size meant it didn’t really fit into a cupboard for storage either.

There’s also the issue with ongoing running costs. While the S1 Pro saves you a substantial amount of time slaving over the sink, the need to purchase additional maintenance and cleaning parts every six months adds quite a lot of money onto an already large price.

Of course, if you’re exclusively pumping or formula feeding, the S1 Pro is a good choice. If you’re breastfeeding and only giving the odd bottle, though, I’d stick to the sink.

We test every bottle washer as part of a real feeding routine. We run full loads across the cycles on offer, using bottles from several different brands, pump parts, teats, and dummies. We deliberately leave some with dried-on milk residue to see how each machine copes.

We check how clean and dry everything comes out and look for hard water stains and mineral deposits. We also see how many bottles genuinely fit in comparison to the manufacturer’s claims.

We also measure noise with the decibel meter, check how easy the controls and app are to use, and look to see how much space the machine takes up. These machines also have ongoing costs, so we work out what that’ll set you back over time, not just the upfront price.

We’ll always tell you what we find. We never, ever, accept money to review a product.

Find out more about how we test in our ethics policy.

• Used as our main bottle washer and steriliser for over a week
• Tested with dried-on milk, pump parts and bottles from several brands
• Running costs counted, not just the upfront price

	Eufy Bottle Washer S1 Pro Review
Manufacturer	Eufy
Size (Dimensions)	345 x 373 x 432 MM
Release Date	2026
First Reviewed Date	20/10/2026
Model Number	T6010
UK RRP	£399.99
USA RRP	TBC