Shark Ionflex Duoclean Cordless Vacuum

Last updated date: June 14, 2021

DWYM Score

8.6

Shark Ionflex Duoclean Cordless Vacuum

Why Trust DWYM?

DWYM is your trusted product review source. Along with our in-house experts, our team analyzes thousands of product reviews from the most trusted websites. We then create one easy-to-understand review. Learn more.

Don't Waste Your Money Seal of Approval
Look for the DWYM seal for products that are the best in the category.
Show Contents

We looked at the top Cordless Vacuums and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Cordless Vacuum you should buy.

Update as June 14, 2021:
Checkout The Best Cordless Vacuums for a detailed review of all the top cordless vacuums.

Overall Take

This cordless vacuum is powerful, efficient and flexible. Plus, it's very versatile and easy to switch between the different attachments and tools. In our testing, we thought the bendable hose was super convenient for reaching under couches and beds. The container, located on the top, was also very easy to empty.


In our analysis of 96 expert reviews, the Shark Ionflex Duoclean Cordless Vacuum placed 7th when we looked at the top 16 products in the category. For the full ranking, see below.

From The Manufacturer

The Shark IONFlex 2X provides the benefits of DuoClean Technology with cordless convenience. Experience hassle-free runtime with the 2X ION Power Pack System, which includes a second removable, rechargeable ION Power Pack lithium-ion battery, allowing you to vacuum while your second battery charges. Featuring DuoClean Technology, a combination of a bristle brush and soft roller invented to clean fine dust and small and large particles on both carpets and floors. MultiFLEX Technology folds over for compact, free-standing storage and provides flexible reach to get under beds, couches, and tables. Smart Response Technology provides a range of performance-enhancing power settings, tailored for your cleaning needs on carpets and floors.

Expert Reviews

Expert Summarized Score

8.8
9 expert reviews

User Summarized Score

8.7
511 user reviews

What experts liked

There’s plenty of suction power on even the lower power mode and all tools are well designed.
- Trusted Reviews
July 18, 2018 | Full review
It has two removable lithium ion batteries so that you can charge one battery while still using the other
- Best Cordless Vacuum Guide
This cordless vacuum has swappable batteries — a fantastic feature that allows you to customize your battery life to match your cleaning needs.
- Tech Gear Lab
It is great for quick clean-ups.
- Top Ten Reviews
March 16, 2018 | Full review
It is extremely effective in cleaning these floors without ruining them.
- Best Vacuum Expert
January 15, 2018 | Full review
The plastic parts fit almost seamlessly together making a strong, yet lightweight unit.
- Will's Best Vacuums
Rated Excellent overall. The flexibility of the model also allows for better maneuverability around furniture, more compact storage and the ability for the unit to stand on its own. It converts to a hand vacuum and you can use the power nozzle in hand vac mode.
- Consumer Reports
Better at getting crumbs off bare floors and pet hair off furniture.
- New York Times Wirecutter
It's a vacuums that easily adapt to different spaces.
- Modern Castle
May 11, 2018 | Full review

What experts didn't like

It’s a little unwieldy in the hand, heavy to reach high cobwebs, and the main floorhead tends to pull forward.
- Trusted Reviews
July 18, 2018 | Full review
It’s a bit more pricier than the corded Rocket.
- Best Cordless Vacuum Guide
The Shark IONFlex is a bit on the pricey side, but it is the best. However, there are definitely better options out there if you are looking to maximize the best bang for the buck.
- Tech Gear Lab
The IONFlex is a little heavy and needs to be emptied often.
- Top Ten Reviews
March 16, 2018 | Full review
The dust collection bin is small and fills quickly
- Best Vacuum Expert
January 15, 2018 | Full review
The Shark ION Flex DuoClean Cordless Ultra-Light Vacuum (IF201) has a tendency to pull itself along like a Self-Propelled vacuum when cleaning carpet. This certainly requires almost no effort for pushing the vacuum forward but it takes some getting used to when pulling it back.
- Will's Best Vacuums
It's on the heavier side of stick vacuums and does not have a brush on/off switch.
- Consumer Reports
It’s heavier and louder.
- New York Times Wirecutter

An Overview On Cordless Vacuums

Cleaning the house can be a real drag, especially because you’ve likely got much better things to do with your free time. But gone are the frustrating days of tripping over your vacuum cord or trying to maneuver the vacuum in one hand while keeping ahold of the cord in another. Thanks to a little ingenuity, you can now buy a cordless vacuum, which means you never have to worry about the cord getting tangled or sucked into the vacuum again (nor do you have to worry about your new puppy pretending the vacuum cord is a chew toy!).

Cordless vacuums also make it so that you never have to stop cleaning to unplug the cord, then replug it into a closer wall outlet, which can be super frustrating if you’re short on time and just need to get the job done in a flash. Most cordless vacuum models attach to a docking station for charging. Then, when you’re ready to clean your floors, you simply remove the vacuum from the docking station and start vacuuming. The ONSON 4-In-1 Cordless Stick Vacuum, for example, has a removable and rechargeable lithium-ion battery that lasts about 32 minutes before you’ll need to recharge it again, which many people say is enough time to vacuum several rooms in your home, depending on their size.

If you’ve never seen a cordless vacuum up close, you’ll notice that they look a bit different than a standard vacuum. Many of these vacuums are long and slender with a dirt bin and a motorhead on top. Others look very similar to a traditional vacuum cleaner with a cord. Some cordless vacuums can also easily become handheld vacuums by simply removing the motorhead from the vacuum stick, which makes for a quick and painless transition. Some cordless vacuums have a rotating or swivel head that makes it easy to clean tough corners or get into tight spots, such as under the couch or the bed.

Cordless vacuums tend to be lighter and smaller than other vacuums, which makes them super useful if you’re short on time and just need to zip around to clean before guests arrive. They’re also helpful if you can’t lift heavy objects or your home has lots of stairs — no more lugging a heavy vacuum around.  Cordless vacuums also tend to take up less space than other vacuums, so they’re perfect for smaller spaces such as apartments and condos.

The Cordless Vacuum Buying Guide

  • One of the key factors you’ll want to consider when purchasing a cordless vacuum is battery life since this will determine how long you can run your cordless vacuum before it needs to be charged. Cordless vacuums can run, on average, between 15 and 45 minutes between charges, depending on the type of vacuum and the setting you select. You won’t be able to use your cordless vacuum for very long if you select the highest-power mode, so keep that in mind when you start cleaning. For example, some models can run for up to 30 minutes, depending on which mode you’re using to clean your house.
  • Cordless vacuums typically use one of three types of batteries: lithium-ion, nickel-metal hydride and nickel-cadmium. Each battery type has its own pros and cons, and they all have varying levels of power, shelf life, replacement cost and charge capacity. Lithium-ion batteries, for instance, tend to be more expensive than nickel-cadmium batteries and you may have to be careful not to overcharge them. Generally speaking, nickel-cadmium batteries tend to need to be replaced more often than the other types, while nickel-metal hydride batteries are more expensive but they hold a lot of power from each charge. Typically, your battery will not be covered under a limited warranty if it fails because of normal wear and tear. Over time, you can likely expect to have to replace the battery for your cordless vacuum.
  • You’ll also want to consider the weight of the vacuum. If being lightweight is important to you, you’ll want to take a look at the product specs for each cordless vacuum. They typically range from 2 to 7 pounds.
  • Most cordless vacuums come with washable filters, which means you’ll need to keep an eye on how dirty this filter becomes and clean it periodically to keep the vacuum running properly.
  • Cordless vacuums come with an array of accessories and attachments. Some of the most common accessories are crevice cleaners, mini brushes and extension heads. One model, for example, includes a duster crevice tool, a dusting brush, a wide upholstery tool, an anti-allergen dust brush, a battery and a charger.