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Best Cordless Water Flosser 2021

Medically Reviewed By: Dr. Gemma Wheeler

(GDC Number: 259369)

Tank of cordless water flosser being opened.

The use of a water flosser can reduce the existence of bleeding of gums by up to 93%.

A water flosser is a more gentle, comfortable and convenient way than the traditional flossing that your dentist always goes on about.  In fact, water flossers reach areas of the mouth normal flossing can’t.

There is a problem though; many water flossers need mains power which means you are potentially restricted in term of where and when you use it.

Thankfully the cordless water flosser exists and after hours of research and testing, we can conclusively tell you which are the best and why.

Below is our list of recommendations, what we like about each flosser and why, plus a link to a more detailed review in case you want more information. 

Later on in this post, we also include a buyer’s guide with a full explanation of water flosser and their features.

The article is broken up into several sections:

Best Cordless Water Flosser 2021 1
Waterpik WP-560
  • Interchangeable tips
  • 3 pressure settings
  • Good sized tank
view on amazon →
Best Cordless Water Flosser 2021 2
Sonicare Airfloss
  • Simple to use
  • Portability
  • Battery life
view on amazon →
Best Cordless Water Flosser 2021 3
Waterpik WF-03 Cordless Freedom
  • Interchangeable tips
  • 2 pressure settings
  • Powered by AA batteries
view on amazon →
Best Cordless Water Flosser 2021 4
Fairywill 5020E Cordless
  • Large 300ml tank
  • 3 pressure settings
  • Fantastic value
view on amazon →
Best Cordless Water Flosser 2021 5
Panasonic EW1411W Cordless
  • 4 pressure settings
  • Water resistant
  • Adds oxygen to water jet
view on amazon →

Our Top 5 Picks For Best Cordless Water Flosser

In the sections below you can read a little more about each water flosser and the reason we have included it.

1. Waterpik WP-560 Cordless

Short review: 

No need to be bound by wires with the WP-560, this is a cordless flosser that has been approved by the ADA.

The 360 degree rotating nozzle allows for excellent access to all areas of the mouth.

3 different flossing tips are included and 3 pressure settings allow up to 45 seconds of usage time from a full tank,

A new magnetic rapid charge system ensures you can easily recharge the unit when required too.

For those that travel a pouch is included too.

Not stuck with just 1 color choice you have the option of 5.

  • Pearly White – WP-560
  • Brilliant Black – WP-562
  • Classic Blue – WP-563
  • What we like
    • Easy to rotate the nozzle
    • Grippy handle
    • 3 pressure settings
    • Easy to attach magnetic charger
    • Different colour options available
    • Travel pouch included in the box
  • What we dislike
    • Expensive
Preview Product Rating Price
Waterpik Cordless Advanced Waterpik Cordless Advanced 276 Reviews £89.99

Read our full Waterpik WP-560 Cordless Advanced Review.

2. Sonicare Airfloss

Short review: 

This is actually our favourite flosser.  We tend to opt for this over the Waterpik.

But, it’s a bit different.  It works by combining short bursts of air and water rather than the stream of water that is typical of other water flossers.

The Airfloss allows you to floss quicker and with more ease. Its smaller size is also convenient. 

You don’t need to stand over a sink with this one.

Good battery life and travel friendliness are other benefits.

Its speed and convenience are brilliant, but it can’t clean under the gum like a true water flosser. This means not all the bacteria are removed.

Whilst doing something is better than nothing, you should note that the Waterpik is technically better for your oral health. 

So you are paying a price if you pick the Philips Sonicare AirFloss.  You need to be comfortable with your decision. Complimenting it with another form of flossing is advisable. 

There are 2 models available. The Pro is the more expensive, but offers a larger reservoir and several power settings. 

The Airfloss is a great option if you want something portable and accept the clinical limitations.

  • What we like
    • Simplicity of use
    • Less messy and takes less getting used to
    • Various settings (pro model)
    • Design
    • Portability
    • Battery life
  • What we dislike
    • Targets only in between teeth rather than along the whole gumline
    • Small tank
    • Only one type of tip
    • Charges from 2 pin socket
Preview Product Rating Price
Sonicare Airfloss Sonicare Airfloss 1,563 Reviews £78.39

Read our full Sonicare Airfloss Review.

3. Waterpik WF-03 Cordless Freedom Water Flosser

Short review: 

The WF-03 is powered by removable AA batteries so you don’t need to worry about mains power with this unit.

It is a bit bulkier and as such not as friendly for those who like to pack light.

But given the benefits it offers, it’s worth compromising on the size.  It boasts a large tank, various pressure settings, interchangeable tips and is made by the market leader. 

The box contents is good with 2 classic jet tips and an orthodontic tip included.

A travel pouch and even a travel plug are included.  The plug goes into where the nozzle goes to stop leaks.

If you like to floss in the shower you can, as the WF-03 is water resistant.

Overall it’s good value for money when you compare it to some of the other options.  

Whilst it is not the most compact nor does it have a rechargeable battery, it perhaps is the best all round option. It performs well and offers flexibility thanks to the AA batteries, a set of which are included.

  • What we like
    • Trusted brand
    • Interchangeable tips
    • 2 pressure modes
    • Reasonable sized tank
    • Good battery life
    • Good box contents
  • What we dislike
    • Bulky
    • Feels a little cheap
Preview Product Rating Price
Waterpik Cordless Freedom Water Flosser Waterpik Cordless Freedom Water Flosser 2,273 Reviews £44.99

Read our full Waterpik WF-03 Cordless Freedom Water Flosser Review.

4. Fairywill 5020E Portable Water Flosser

Short review: 

Fairywill have made a name for themselves in the electric toothbrush market offering good value products.

The Chinese company have now taken that approach to the water flosser market.

I make no excuses in saying that it doesn’t feel in hand as good as some other units, notably those from Waterpik.  Nor is there the extensive clinical backing.

However, the 5020E is a functional piece of kit that offers 3 flossing modes, clean, soft and massage.  I think scientifically it probably cleans nearly as well as Waterpik.

You get 8 jet tips included in the box which represents excellent value for money.

The 300ml tank is basically double most other cordless flossers available today. You can complete a full floss of the mouth without needing to refill the water tank.

The rechargeable battery lasts up to 21 days on a single charge. It takes just 4 hours to recharge via the provided USB cable. Unfortunately, the port cover required for the flosser is small, fiddly and easily lost. It is a small complaint really.

You can too get this in a number of different colour options.

  • What we like
    • Good value
    • 3 modes
    • Good sized 300ml tank
    • USB charging
  • What we dislike
    • Quality could be better
    • The nozzle is difficult to rotate
    • Easy to lose charging port cover
Preview Product Rating Price
Fairywill 5020E Cordless Flosser - White Fairywill 5020E Cordless Flosser - White 5,300 Reviews £30.99 £26.34

Read our full Fairywill 5020E Water Flosser Review.

5. Panasonic EW1411W Cordless Oral Irrigator

Short review:  

The Panasonic EW1411W is the only water flosser in our list to offer a wall mountable charging stand. It has 3 different modes and 2 jet types.

With regular or soft mode, you can enjoy a flowing stream of water or an air injected mixture.  Choose what works best for you.

The refillable tank is smaller than some but gives up to 35 seconds usage on full power.

Lasting 15 minutes between charges, the internal battery should be good for around a week.

  • What we like
    • 3 modes
    • 2 jet types
    • Wall mountable
  • What we dislike
    • Smallish tank
    • Quality concerns
Preview Product Rating Price
Panasonic EW1411W Panasonic EW1411W 519 Reviews £42.23

Why should you listen to us?

Electric Teeth is an independent website with a mission to simplify dental health.

Our team is a mixture of consumers and dental professionals.

We strive to create honest, informative content, telling you the facts, good or bad.

We are not sponsored by big brands or healthcare companies. Our site is funded by affiliate revenue and ads, but we only recommend products that we have tested and truly believe to be worth your money.

Why not watch this short video to find out all about us?

Cordless Water Flosser Buyer’s Guide

Corded water flossers are better (for some)

Right, let’s not mess about here.

From a scientific, everyday-use and results perspective you are going to get the best experience from the larger, bulkier and mains hogging countertop water flossers.

They will normally offer more features such as variable pressure settings and larger water tanks that ultimately affect your user experience.

But, the cordless and wire free options are good enough for the vast majority of us and still bring significant benefit.

If you are more interested in countertop / corded flossers, check out this article.

Best Cordless Water Flosser 2021 6

What is a cordless water flosser?

A cordless or portable water flosser is an oral hygiene product that is powered from built-in batteries.

When switched on, the batteries power the pump that draws water from the refillable tank/reservoir and pushes this out at pressure via a nozzle you align with your gumline.

The water dislodges food particles, bacteria and plaque both on and underneath the gums, that was not removed through regular brushing to leave you with a cleaner and healthier mouth.

Water flossers are a type of interdental cleaning, like regular flossing or interdental brushes, which should be used in addition to brushing (preferably with an electric toothbrush!).

No power cable means you can move around more freely and floss where and when you choose.  This is particularly helpful for those who travel frequently or do not have a power outlet in the bathroom.

Oh, and if you see the words oral irrigator, it’s the same as a water flosser it’s just another name for them.

Waterpik is also a name you will see, this is in fact a brand name that has become synonymous with water flossers.

Best Cordless Water Flosser 2021 7

Pros and cons of cordless water flossers

There are pros and cons to water flossers in a general sense as well as those that are specific to cordless flossers.

For example all water flossers, cordless or not, tend to be easier to use, softer on the gums, offer a better clean and reach more of the tooth surface in comparison to regular flossing.

A con is that the technique does take some getting used to and they are initially anyway, more expensive than normal string floss.

Listed below are what we consider the pros and cons of cordless oral irrigators specifically.

Best Cordless Water Flosser 2021 8

Benefits of a cordless water flosser

  • Size/portability
    • Much smaller than the countertop alternative they can be stored out of sight, taken away when travelling as they will more easily fit in a bag.
  • Internal batteries
    • Batteries inside the flosser, be those user replaceable or rechargeable mean you are not attached to a power outlet and you can go where you want with the flosser. Not tied to the 2 pin socket in the bathroom.

Negatives of a water flosser

  • Tank/reservoir size
    • To be portable, the flossers need to be smaller and the tank is the biggest compromise.  Often enough to just do the job, you have to frequently refill.
  • Batteries/recharging
    • The batteries are built-in and need recharging or are user replaceable AA design often.  They need frequent charging due to the power used and often the chargers connect to 2 pin sockets, which is one of the appeals for going cordless in the first place.

Do I need a portable flosser?

It depends.

None of us NEED one, but there are health benefits from owning a water flosser.

There is then the added benefits such as size and portability that the cordless option bring which in truth generally outweighs the cons by quite some considerable distance.

With over 47.2% of over 30’s in the USA alone suffering from gum disease according to the Centre for Disease Control and Prevention,  and the proven benefits of the water flosser there are very compelling arguments to own one.

Common signs of gum disease are red or swollen, tender or bleeding gums.  

Best Cordless Water Flosser 2021 9

This is normally caused by poor oral hygiene and regular flossing can help, but water flossing in particular is more effective and comfortable to do.

A 2005 study found that the addition of a water flosser to a daily oral healthcare routine resulted in a 93% reduction in bleeding and up to 52% better at reducing gingivitis (inflamed gums) than traditional dental floss.

Other studies have shown that water flossers are able to remove more bacteria, reduce more bleeding, plaque, and gingivitis in comparison to interdental brushes and to just toothbrushing alone.

Dr. David Jolkovsky, a diplomate of the American Board of Periodontology, wrote a literature review that unequivocally showed that a Waterpik Water Flosser reduces inflammation, removes bacteria from deep periodontal pockets, does not cause damage to mouth tissues and is in the same range as brushing teeth, flossing, and using wooden sticks in the incidence of bacteremia.

Recent guidelines also recommend that the use of a water flosser is even safe for those who require antibiotic cover for dental treatment.

Such high praise has made water flossers a must have healthcare gadget, but daily life means the countertop option is not always practical, particularly if you lack a power outlet in the bathroom or travel frequently.

As you will see from our recommendations at the start of the article, Waterpik and Sonicare are just two big brands within this space, but ultimately Waterpik are industry leaders.

Best Cordless Water Flosser 2021 10

What makes a good cordless water flosser?

So although compromise for some features has to be made to make a cordless flosser portable there are some key things to look out for.

You will see that our highest ranking recommendations will boast these features.

  • Water tank/reservoir size

Smaller than the countertop options it is about finding those with the largest tank but keep the unit portable.

  • Adjustable pressure settings

Adjustable pressure can help ensure you get a more comfortable user experience.

The best cordless options will offer at least two options here, typically high or low with a pressure measured in Bar, varying from 3.1-5.2.

Best Cordless Water Flosser 2021 11
  • Size/travel friendly

It is somewhat of a catch 22 in that you want the largest tank, but you want flosser to be small enough to be portable.

Frequent travellers take note of the size and ease of which it can be fit into a bag.

  • Different tips

The more premium models, particularly those from Waterpik offer a range of different styles of interchangeable tips.

Whilst the classic jet tip is most common across all brands, the more specific options work well for particular user requirements.

Those with braces will wish to make use of the orthodontic tip whilst those who have dental work such as dental implants, tooth crowns and bridges will find the plaque seeker tip most beneficial.

Best Cordless Water Flosser 2021 12
  • Adjustable/rotatable nozzle

Some allow you rotate the nozzle, they are not completely fixed giving greater flexibility in reaching certain areas of the mouth.

Some rotate a full 360 degrees thanks to a click wheel style adjustment.

So, here then is our list of best cordless water flossers with extra detail on why we have picked each one and what we like.

Travelling with a cordless flosser

Depending on the model you choose will depend on the exact power and connector that comes supplied with it.

Most power cables for recharging the water flosser come with a 2 pin connector, designed to be connected to the power socket found in a bathroom.  With the use of an adapter (sold separately), you can connect these to 3 pin power supplies in the UK.

Best Cordless Water Flosser 2021 13

Some do come with 3 pin chargers and those with replaceable batteries can be a real winner for some.

If you intend to travel with the flosser be aware of the different power requirements internationally.  As a quick reference guide:

  • Printed on base/plug – 100-240V
    • Where can it be used? Globally
    • Do I need a voltage convertor? No
    • Do I need a plug adapter? Subject to country
  • Printed on base/plug – 220-240V
    • Where can it be used? In countries with 200-240V (e.g. most European countries, NOT US/Canada)
    • Do I need a voltage convertor? Yes if the voltage of the country you are travelling to is less than 220V
    • Do I need a plug adapter? Subject to country
  • Printed on base/plug– 110 Volts 60 Cycles
    • Where can it be used? In countries with 110 volts (e.g. US/Canada)
    • Do I need a voltage convertor? Yes if the voltage of the country you are travelling to is higher than 110V
    • Do I need a plug adapter? Subject to country


Subject to change between models and manufacturers, most come with a 2 year (24 month) warranty that will cover any faults that are not as a result of user damage.

An example might be the pump failing to push water through.

You will need to contact the manufacturers respective customer service line but will likely need your original proof of purchase and once accepted arrange repair or replacement of the product.

Where to buy

Due to the size and slightly more specialised nature of the water flosser, sadly the availability is not quite as great as most other dental products.

You are less likely to see a wide range in your local supermarket, but chemists like Boots and Superdrug do offer them.

Many manufacturers offer their own online stores and then there are the other retailers like Argos and Amazon who offer a wide portfolio of products. It’s always worth checking eBay too.

We have to suggest Amazon as the ‘best’ option given their very competitive prices, broad range and rapid delivery options.

About Jon Love

Jon is a leading voice on electric toothbrushes and has been quoted by mainstream media publications for his opinions and expertise.

Having handled & tested hundreds of products there really is very little he does not know about them.

Passionate about business and helping others, Jon has been involved in various online enterprises since the early 2000s.

After spending 12 years in consumer technology, it was in 2014 that he focused his attention on dental health, having experienced first-hand the challenge of choosing a new toothbrush.

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Leave a comment or question

4 thoughts on “Best Cordless Water Flosser 2021”

  1. How hard should the pressure feel? I bought a Kogan brand flosser and lower pressure still feels pretty strong against the palm of my hand with the tip a few inches away – almost a sting. So it is a bit uncomfortable in the mouth if the jet moves off the teeth and into gums or cheeks. Cheers.

    • Hi Bruce.

      On the lowest setting usually, it should feel quite soft.

      I wouldn’t even suggest on the highest setting it should sting, but it can potentially feel a bit more punchy.

      The sensation can differ from one brand to another depending on the type of tip and water flow used.

      Probably not the best description but some have much finer jets which can feel much more intense and more akin to a sting. It really should be momentary discomfort in those cases as the water hits the gum for the first time.

      Do you have sensitive/inflamed or bleeding gums?

      If you do this would explain to me why the sensation might be more intense and painful than you would expect.

      It is quite likely after a few days you will become more used to it and the discomfort will reduce.

      Before using this did you floss or use interdental brushes?

  2. Hi John, I came across your very informative site whilst seeking information on my Waterpik WP560. I’ve had mine for 13 months and it up and stopped turning on the other day, no power, nothing.

    My question to you is, are you aware of any hassles re Waterpik honouring their warranty obligations?

    I am in New Zealand and purchased off Amazon USA. Their initial response was to point me to the Australian distributor who haven’t replied to my email yet (sent several days ago). I am hopeful that Waterpik eventually agree to replace the unit under the warranty.

    Thanks for your time

    • Hi Scott.

      Sorry to hear about the problems you have experienced with the Waterpik.

      I can’t say I have had lots of complaints about Waterpik honouring warranty obligations if I am honest.

      I am not actively looking for complaints, and one must remember, we humans tend to complain more than we do praise a good customer experience.

      I would like to hope that they do right by you, however, the complication here is that you purchased from Amazon USA. I am not sure how Waterpik work, but some companies are very regionalised and won’t like to replace a product sold within another region.

      I would give it a couple more days and try contacting the Australian distributor again.

      Failing that perhaps go through to Waterpik USA and see if there is anything they can do.

      I hope you get it resolved.

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