Our recommendations are independently selected and dentist-approved. We may earn a commission if you buy something. Why trust us?

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 more gentle, comfortable and convenient than traditional flossing.  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
  • 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
Burst Water Flosser
  • 3 modes
  • 80+ day battery life
  • Subscription option
check best price →
Best Cordless Water Flosser 2021 4
Waterpik WF-03 Cordless Freedom
  • Interchangeable tips
  • 2 pressure settings
  • Powered by AA batteries
view on amazon →
Best Cordless Water Flosser 2021 5
Fairywill 5020E Cordless
  • Large 300ml tank
  • 3 pressure settings
  • Fantastic value
view on Amazon →
Best Cordless Water Flosser 2021 6
H2ofloss HF-6MINI
  • Collapsible
  • 5 pressure settings
  • USB charging
view on amazon →

Our Top 6 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 11,323 Reviews $79.99 $69.97

Read More: Waterpik Cordless Advanced WP-560 Review

2. Sonicare Airfloss

Short review:

For convenience and ease of use, this is the best choice.

It is a lot less hassle and feels quicker and more convenient than all of the other options.

But, it’s not strictly a water flosser.

Airfloss uses a combination of water and air to achieve a similar effect but delivers short sharp bursts getting in between teeth.

What makes it so good and desirable is the much smaller profile, it’s cordless, really easy to use and can achieve a clean in 30 seconds.

It makes for effortless everyday use.

Convenience and simplicity is one thing, but it can’t clean under the gum like a true water flosser can, because not all the bacteria are removed as effectively.

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

Clinical studies show Waterpik options are better and in truth, you know this when you use them.

You need less time to get to grips with this.  It is a great option for those who know that they would still struggle with getting into a routine of using a normal water flosser.

  • 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 HX8211/03 Sonicare Airfloss HX8211/03 3,375 Reviews

Read More: Sonicare AirFloss Review

3. Burst Water Flosser

Short review:

Burst have existed within the dental care space for a few years, but this is their their first water flosser. Wow, it does a great job.

It is actually more powerful than the WP-560, producing a whopping 160 PSI on the turbo mode.

It is stylish and has an amazing batter life of well over 80 days.

A 110ml/3.9 ounce water tank is really what lets it down. The tank is drained in as little as 20 seconds. This just isn’t enough time for most to clean thoroughly.

There are 3 different nozzles available, all of which can rotate 360 degrees. Unfortunately, they are a bit stiff and it is not really possible to twist when in use.

It looks good and feels good in hand. It also has some nice design touches which are consistent with the Burst electric toothbrush.

A pouch style case is included too.

There are 3 color options

  • White
  • Black
  • Rose Gold

And for those who want the convenience, you can subscribe for 6 monthly deliveries of replacement nozzles. As a bonus for subscribing your warranty is extended for the lifetime of the subscription.

  • What we like
    • Design
    • 3 pressure/mode settings
    • Interchangeable tips
    • Battery life
    • USB charging
    • Subscription
  • What we dislike
    • Water tank capacity
    • Water tank door 
    • Price
Preview Product Rating Price
Burst Water Flosser - White Burst Water Flosser - White 213 Reviews $69.99

You can also purchase directly from Burst Oral Care using this link. Enter the code SAVE10 to get 10% off your first order.

Read More: Burst water flosser Review

4. 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 6,422 Reviews $58.79

Read More: Waterpik WF-03 Review

5. 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 color 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 Water Flosser - White Fairywill 5020E Cordless Water Flosser - White 12,504 Reviews $34.99

Read More: Fairywill 5020E flosser Review

6. 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.

What stands 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.

Available in 2 colors, each 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
    • 2 color options
    • USB charging
  • What we dislike
    • Small tank
    • Quality could be better
Preview Product Rating Price
H2ofloss HF-6MINI Cordless H2ofloss HF-6MINI Cordless 231 Reviews $33.99

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 7

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 8

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 9

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 10

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 11

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 12
  • 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 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, Walgreens and CVS 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.

Below you can find a few buying options for our number 1 choice, the Waterpik WP-560 Cordless: 

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.

Read More

Leave a comment or question

6 thoughts on “Best Cordless Water Flosser 2021”

  1. in all my searching for a portable water flosser, not one mention was made of ease in cleaning the water reservoir to avoid mold. The only comment I read regarding cleaning was in an Amazon site review with many reviews stating difficulty cleaning the portable flosser. This is the same principle of a humidifier. The reservoir must be cleaned often to prevent mold using bleach or vinegar. any comments of one to buy?

    • Hi Eileen.

      I can’t say I have found mold buildup to be a real issue. It can happen. However, keeping the door to the tank open when not in use allows it to dry out and reduce the chance of mold forming.

      We do have an article on how to clean a water flosser that would help prevent buildup. You can read it here.

  2. Waterpik water flossers battery will fail in about 12 to 13 months, so be prepared to purchase another about every year. The replacements batteries will not last but about half the time, and are difficult to replace.

    • Hi Thomas.

      Which one have you had fail on you? Many come with warranty periods longer than a year so should be repaired/replaced.

  3. I’ve used up 3 Waterpik WP-450. They just don’t last! They work great when new but after about a year the batteries fade, and they are not replaceable or repairable. I don’t think you should have to buy a new appliance every year.

    • Hi Andrew,

      Thanks for the feedback. I agree with you on not really needing to replace the product every year. It would seem they are failing outside of the warranty period, which is very frustrating.

      Have you spoken to Waterpik? If so, have they said anything?

      Given you have bought 3 and they have failed, can I presume despite your dissatisfaction at this, they do a good enough job to make it worth it for you?

Leave a comment