Shark Ionflex Duoclean Review - Shark Ionflex 2X Duoclean Ultra Light IF251


Shark Ionflex Duoclean 2X Duoclean Ultra Light IF251 - Flexible Enough For You?

Jun 16, 2021

While the cleaning aspects of vacuums can be quite effective, especially when dealing with small and scattered debris, sometimes it’s still not worth taking your bulky machine out just to start vacuuming specific spots on the floor. As a result, you might want to consider a model that’s more portable and accessible.

And the Shark IONFlex DuoClean, featuring a compact build and fully-featured design, will allow all homeowners to comfortably work on cleaning any area of their houses. With the cordless design and its flexible use, the machine will let you clean without you having to worry.

Feel free to learn more about this useful product from Shark with our comprehensive review and see how it can benefit you. And at the same time, also explore other worthy options which you might find more interesting.

About the Shark IONFlex DuoClean


Suction power
Easy to clean
For deep cleaning

The Shark IONFlex DuoClean is currently the staple of cordless vacuum products from the famous company and the product is aimed at average users with different cleaning preferences. And the Shark IONFlex 2x duoclean if251, with its latest upgrades, will surely impress many users.

The cordless and flexible design, along with many available attachments, will allow you to comfortably carry it to work on any area of the house. And the fully-functional cleaner head with the powerful DuoClean technology can easily pick up different debris and dirt on both bare floors and carpets without any trouble.

As a result, the vacuum can really help you clean your houses in a much easier and effective manner. The small and portable machine can be carried all over the house and is also capable of standing on its own. Plus, whenever you need to clean furniture, it’s possible to take out the cleaner head and convert your machine into a handheld mode.

And last but not least, with the interchangeable battery design, together with an extra battery and external charger, you can double the battery time on your Shark IONFlex DuoClean quite easily.

It’s a flexible cordless model for home uses

It’s a flexible cordless model for home uses Via: Amazon


  • • Comfortable use with the cordless and lightweight design
  • • Extremely flexible thanks to the foldable handle
  • • Can be used in both stick or handheld mode
  • • Powerful DuoClean technology to wipe the floors
  • • Useful tools and accessories to work with


  • • A little heavy in handheld mode

Features & Benefits

In the following articles, we’ll dive deep into the different features on this product and explain how they can benefit you in actuality. As a result, you will learn more about the Shark IONFlex DuoClean and know exactly what you’re getting for your money.

   ➜ RELATED: Shark Ion P50 Cord-Free Powered Lift-Away Ic162 Vacuum Cleaner Reviews

Enjoy working with the wireless machine at anytime

Right off the bat, homeowners will immediately see the benefits of having a cordless vacuum model. Now, there is no need to constantly manage your wires and cables when working on a large and crowded room. All you need is to take out the machine and power it up with the built-in battery to start cleaning whenever and wherever you want. This gives the machine a much better accessibility when compared to its wired counterpart.

Also, despite being powered only through battery, the shark duoclean cordless vacuum is surprisingly powerful, capable of picking up all dust and debris on different floors and surfaces. From our tests, the machine provides decent levels of suction even in its low-battery consumption mode, which causes it to slightly fall short in terms of battery life when compared to other premium models.

However, thanks to the interchangeable battery design from Shark and the included extra battery when purchasing the package, you can always double the run time on your machine to enjoy up to 60 minutes of running with the shark IONFlex duoclean cordless ultra light vacuum.

The external charger will let you charge the other battery while you’re working with the machine. Thus, making sure that both the batteries are well-powered before you start vacuuming. Plus, users also have the option to purchase new batteries to triple or even quadruple their running time on the vacuum, which can be quite useful for certain individuals.

With the duo batteries you can have better running time

With the duo batteries you can have better running time Via: Amazon

Intuitive controls and indicators to work with

To make sure that you can comfortably work with its features, the vacuum features an intuitive controller interface on its handle, allowing you to easily change the running mode or monitor the vacuum’s status.

Feel free to change the running mode between carpet and floor to allow the machine to self-adjust its brushes. Also, you can make use of the power settings to optimize your machine battery life or suction power. As a result, you can choose to optimize the suction power on difficult spots while conserving the battery on other less challenging tasks.

And to make it as easy as possible for you to monitor the machine, there are intuitive LED indicators showing the exact running mode on the machine. Plus, you can always keep tabs on the remaining power by watching the battery light.

You can easily control and manage its features

You can easily control and manage its features Via: Amazon

Easy steering and extremely flexible

For those of you who are interested you can now use the dynamic steering option on the shark IONFlex duoclean to easily work the machine in tight areas without touching anything. The flexible handle turner allows you to change direction by simply turning your wrist, which enables a wide range of motion for the vacuum.

And with the MultiFLEX technology available, the machine is capable of bending its handle by 90o, creating a perfect tool for you to reach under furniture and household appliances. A simple run over with your vacuum should allow you to collect all the dirt.

At the same time the MultiFLEX technology is also great for parking and storing your vacuum, as you’re able to fold the machine to half of its size. Thus, making it quite easy to store your machine inside your closet or any other places without taking too much space.

The machine is extremely flexible to work with

The machine is extremely flexible to work with Via: Amazon

Powerful cleaner head with DuoClean technology

To make it easier for homeowners, the machine now features the latest DuoClean technology from Shark, which enables it to work effectively on both floors and carpets at the same time. Here, the cleaner head comes with two different brushes including the standard bristle roller for carpets and the soft roller for bare floors.

By featuring these two brushes at the same time, the machine can effectively collect any dirt and debris on your floors and carpets without you having to switch heads. And the powerful suction power can deliver great performances with just a couple of passes.

   ➜ RELATED: Shark Apex Uplight Reviews: Strong Suction In A Compact Body

Plus, thanks to the included LED headlights on the cleaner head, users will have better vision in front of them. With the lights constantly shining your way, you can make more accurate passes and won’t miss places that you normally do, especially fine dirt and small debris.

The powerful cleaner head will allow you to pick up anything

The powerful cleaner head will allow you to pick up anything Via: Amazon

Also work in handheld mode

For those of you who are interested, you can now convert your shark IONFlex 2x duoclean cordless ultra light vacuum if252 into a handheld model, which makes it extremely easy when cleaning higher and over head areas.

Simply unlock the switch and take out the cleaner head, which will greatly reduce its weight and enable better control. Feel free to use other available attachments and tools that come with the package to continue cleaning.

The dusting brush, upholstery tool, dusting and crevice tool should be extremely helpful when cleaning corners, furniture, and shelves. Thus, allowing you to enjoy a better cleaning experience with the machine.

You can also work with the handheld mode

You can also work with the handheld mode Via: Amazon

Social Proof

While the Shark IONFlex DuoClean is among the top rated vacuum cleaners when it comes to handheld and cordless use, as you can see from our reviews. We know that consumers will need more than that to justify their decisions. Hence, we also search online for other’s opinions regarding the machine.

And to our knowledge, many of them were positive and provide many useful insights on the machine. Feel free to take a look at some of the most notable reviews and see what others have to say about the Shark if251.

shark duo cordless

shark ionflex vacuum


For those of you who are still not sure about the product and are looking for more options, our comprehensive list of great alternatives should definitely interest you. Here, we introduce other top-rated vacuums, each slightly different, for you to choose. Judging from your personal preferences, you can opt in for one of these three models instead of the Shark IONFlex DuoClean.

#1- Samsung Jet 70

The lightweight and functional machine will work great on your house

The lightweight and functional machine will work great on your house Via: Amazon

If you have pets or don’t want fine dust to affect your children,  a vacuum with proper filtrations is a must. And while the Shark if251 comes with two filters, they’re only standard foam and cloth filters, which aren’t going to keep the air free of allergens.

That being said, with the Samsung Jet 70, pet owners and parents can rest assured knowing that the air is completely clean. With its multi-cyclonic system, the airflow will keep debris from building up on the filters. At the same time, the mesh filter will protect the machine from medium-sized particles while the ultra-fine dust filter will keep 99,999% of fine dust and allergens from escaping. As a result, you can comfortably breathe without worry.

In addition, you’ll also find the Samsung Jet 70 to be extremely easy to work with, thanks to its flexible nature and a relatively light weight. You can easily move the cleaner head around with the 180o swivel steering. And at only 6 pounds, the vacuum can be carried around your house without any trouble.

The only slight discomfort that you’ll notice when using the machine is the separated cleaner heads, which don’t come with the DuoClean technology like the Shark vacuum. Instead, you’ll need to put on the soft roller or the brush roller depending on what you’re going to do with it. And if you don’t purchase all the attachments, you might not have all these tools.

#2- Dyson Cyclone V10 Absolute

The machine can easily deal with pet hair

The machine can easily deal with pet hair Via: Amazon

When it comes to cordless vacuums, Dyson has always been the go-to brand, thanks to their innovative products and reliability. But of course, their pricing on vacuums can be quite concerning for some users. So you should only consider the Cyclone V10 Absolute if you want to pay its premium price.

To start with, Dyson’s filtration technology will help to keep your house completely clean from fine dust and allergens, thanks to its advanced HEPA filters and cyclonic vacuuming actions.

The powerful and fade-free battery will keep your machine running for about 40 minutes with the soft roller and even more if you’re using it in hand-held mode. This absolutely dominates the Shark IONFlex and the Samsung, which will give you better running time with it.

Like the Samsung Jet 70, you can get many tools to work with the Dyson V10, including the soft and bristle roller. But all these tools will come with the package, instead of being sold separately.

#3- Shark ION F80

Get yourself a more powerful IONFlex DuoClean

Get yourself a more powerful IONFlex DuoClean Via: Amazon

And last but not least, if you’re interested in many features from the Shark IONFlex DuoClean but you want a better battery time, then the Shark ION F80 is certainly a better option. Here, you can make use of its upgraded batteries with up to 80 minutes of total running time on both power units to easily finish cleaning your house.

At the same time, the upgraded suction power on the machine will guarantee better performance on your machine. This, together with the staple DuoClean technology, will allow homeowners to comfortably work on cleaning their carpets and floors without any hassle.

Also, feel free to work with the convenient MultiFlex technology that would give you better maneuverability and flexibility. You can learn more about this product with our shark ion f80 reviews.


With extreme accessibility and ease of use, this best shark vacuum cleaner will allow homeowners to comfortably work on cleaning their house. And thanks to many of its advanced features, house cleaning can be a simple and enjoyable chore for all of you.

Now, there is no need to worry about wire management, especially when cleaning a crowded and large room. Plus, the DuoClean technology and a decently powered vacuum unit will allow the machine to effectively collect dust and debris on your floors. And most importantly, the absolute levels of flexibility and a convertible design will make the Shark IONFlex DuoClean a great option for all users.

For those of you who are interested in this product, or any other worthy alternatives, you can check them out by clicking the following link.

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