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Best Cordless Water Flosser 2021

Medically Reviewed By: Dr. Gemma Wheeler

(GDC Number: 259369)

Cordless water flosser reservoir 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 terms 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 you will find our list of recommendations, a brief review of each flosser we have considered, and a link off to our more detailed review.

You might want to know a little bit more about why we have ranked these the way we have, so we explain in detail below.

The article is broken up into several sections:

Best Cordless Water Flosser 2021 1
Waterpik WP-560
  • Interchangeable tips
  • Cordless
  • Magnetic charger
view on Amazon →
Best Cordless Water Flosser 2021 2
Sonicare Airfloss
  • Less messy & takes less getting used to
  • Designed for inconsistent flossers
  • Safe and gentle on teeth & gums
view on Amazon →
Best Cordless Water Flosser 2021 3
Waterpik WF-03 Cordless Freedom
  • Ideal for small bathrooms and travel
  • Waterproof, may be used in shower
  • Removable batteries
view on Amazon →
Best Cordless Water Flosser 2021 4
Fairywill 5020E
  • 300ml water tank
  • 8 tips included
  • 3 modes
view on Amazon →
Best Cordless Water Flosser 2021 5
H2oFloss HF-6MINI
  • Collapsible
  • 5 pressure settings
  • USB charging
view on Amazon →

Our Top 5 Picks For Best Cordless Water Flosser

In the section below you can read a little more about each flosser and the reason we have chosen it.

1. Waterpik WP-560 Cordless Advanced

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
  • Radiant Orchid – WP-565
  • Rose Gold – WP-569
  • What we like
    • Trusted brand
    • Cordless
    • Easy to rotate the nozzle
    • Grippy handle
    • 3 pressure settings
    • Easy to attach magnetic charger
    • Different color options available
    • Travel pouch included in the box
  • What we dislike
    • Expensive
Preview Product Rating Price
Waterpik Cordless Advanced WP-560 Waterpik Cordless Advanced WP-560 4,856 Reviews CDN$ 119.99 CDN$ 107.66

Read More: Waterpik Cordless Advanced WP-560 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
    • Design
    • Portability
    • Battery life
  • What we dislike
    • Targets only in between teeth rather than along the whole gumline
    • Small tank
Preview Product Rating Price
Sonicare Airfloss Sonicare Airfloss 301 Reviews CDN$ 99.99 CDN$ 79.95

Read More: Sonicare AirFloss Review

3. Waterpik WF-03 Cordless Freedom Water Flosser

Short review:

Powered by user removable AA batteries you don’t need to worry about mains power with this unit.

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

But boasting a large tank, different pressure settings, interchangeable tips and being from the market leader, these are compromises potentially worth disregarding given the benefits.

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 too as this is fully water resistant.

Overall pretty good value when you compare to some of the other options and whilst it is not the most compact nor does it have a rechargeable battery, it perhaps is the best all round option giving good performance with flexibility via the AA batteries, a set of which are included.

  • What we like
    • Trusted brand
    • Interchangeable tips
    • 2 pressure modes
    • Reasonably sized tank
    • Good battery life
    • Good box contents
  • What we dislike
    • Bulky
    • Feels a little cheap
Preview Product Rating Price
Waterpik Cordless Freedom WF-03 Waterpik Cordless Freedom WF-03 4,784 Reviews CDN$ 53.65

Read More: Waterpik WF-03 Review

4. Fairywill 5020E

Short review:

Fairywill are fast making a good name for themselves and this 5020E is a good example of why.

Offering 3 different modes, the pressure of the water ranges from 30 to a powerful 110ml. This means that most users should find a mode ideally suited to them.

It comes provided with 8 jet tips, in the box. This is enough to last you at least a couple of years. Unfortunately, replacement nozzles are a little more difficult to come by, but generic replacement nozzles can be sourced and easily fitted.

With a 300ml detachable water tank, this does away with the problem that some other cordless flossers create. The need to refill. For most people, this tank is large enough to complete a thorough clean without having to top it up.

The quality of the units is certainly satisfactory, but you don’t get quite the same premium feel feel as you might with some other brands.

The rechargeable battery should last around 21 days on a single charge. Recharging is completed via a USB cable.

The lack of a travel pouch in the box is a bit dissapointing, as it would be slightly more convenient for when on the go.

However, there is no denying that this offers really good value for money.

  • What we like
    • Good value
    • 3 modes
    • Large 300ml tank
    • Multiple jet tips
    • Color options
  • What we dislike
    • Quality could be better
    • The nozzle is difficult to rotate
    • Easy to lose charging port cover
    • No travel pouch
Preview Product Rating Price
Fairyiwill 5020E Water Flosser Fairyiwill 5020E Water Flosser 25 Reviews CDN$ 39.99

Read More: Fairywill 5020E Review

5. H2ofloss HF-6 Mini

Short review:

H2ofloss may not be a household name, but they are gradually building themselves a solid reputation in the water flosser market.

Key to that success if exceptional value for money. The HF-6 Mini is no exception.

But what stand out about this model is the collapsible design, making it a real must for those frequently on the go and traveling.

Lovely and compact, this measures just 5.9 inches by 2.36 inches when collapsed.

Admittedly that compact size excludes the nozzles and USB charging cable, but they don’t take up much space. All of these things can be stored in the provided drawstring pouch.

It comes with 5 different nozzle attachments, 2 of which are the classic jet tip style. All can rotate 360 degrees.

When expanded the tanks size is 200ml, which is a little smaller than is ideal, but it is functional.

A rechargeable lithium battery is built into the flosser and is recharged via the provided USB cable.

You will get up to 15 days from the battery when using it on the highest power setting of the 5 available.

A dedicated mode button changes the power and LEDs on the unit make it clear which is selected.

This is a fantastic product.

  • What we like
    • Good value
    • 5 pressure settings
    • Collapsible
    • Multiple tips included
    • USB charging
  • What we dislike
    • Small tank
    • Quality could be better
Preview Product Rating Price
H2oFloss H2oFloss 165 Reviews CDN$ 45.99

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

Having tested and reviewed plenty of flossers, we’ve put together the guide below based on our own experience and questions. If there’s anything else you’d like to know, please leave a comment at the bottom of the page.

Corded water flossers are better (for some)

Right, let’s not mess about here.

From a science, 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 think a countertop water flosser may be a better fit for you, check out our article on the best ones here.

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 traveling 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 2013 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 travelers 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 implants, crowns and bridges will find the plaque seeker tip most beneficial.

  • Adjustable/rotatable nozzle

Some allow you to 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

Traveling 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 US/Canadian connector, designed to be connected to the power socket found in a bathroom.

Some do come with replaceable batteries, which 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 traveling 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 traveling 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 manufacturer’s 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 specialized 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 grocery store, but bigger stores and pharmacies like Walmart and Best Buy do offer them.

Many manufacturers offer their own online stores and then there are the other retailers like Amazon and Walmart who offer a wide portfolio of products.

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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2 thoughts on “Best Cordless Water Flosser 2021”

    • Hi. I have not seen many products quite like this to be honest.

      Is there a specific reason for needing or wanting a detachable hose?

      Are you looking for a unit that is powered by a built-in battery?

      If you could give me a bit more information on the reasons why and how you plan to interact with the device, this may be able to help me recommend something.

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