Vacuum Cleaners

Best Vacuums

Shark IONFlex 2X DuoClean Ultra-Light Cordless IF251

This Shark IONFlex 2X has a 25.2 V user-replaceable Lithium ion battery, converts to a hand vac and comes with a pet multi-tool, duster crevice tool, dust brush, extra battery and charger.

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CR Expert Take

How did it perform in our owner surveys and expert lab testing?

Overall Score

The Overall Score for this model incorporates our expert lab test results, as well as ratings for that brand’s reliability and owner satisfaction from our annual product owner survey of members.

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Current Range of Tested Stick Vacuums (Corded)

What goes into the Overall Score?

OWNER SURVEYS

Learn More

Carpet

/ 5

Bare floors

/ 5

Edges

/ 5

Noise

/ 5

Pet hair

/ 5

Clean emissions

/ 5

Color

/ 5

Cordless

/ 5

Run time (min.)

/ 5

Emissions

/ 5

Charge time (hr.)

/ 5

About

The Shark IONFlex 2X DuoClean Ultra-Light Cordless IF251 is part of the Vacuum Cleaners test program at Consumer Reports. In our lab tests, Stick Vacuums (Corded) models like the IONFlex 2X DuoClean Ultra-Light Cordless IF251 are rated on multiple criteria, such as those listed below.

Carpet: How well models removed embedded sand from medium-pile carpet.

Bare floors: Denotes removal of surface debris from laminate flooring.

Edges: How well units picked up debris from where the floor meets walls.

Brand Reliability & Satisfaction

#? in Reliability of all Stick Vacuum (Corded) Brands

Did the brand perform consistently well over time?

PREDICTED RELIABILITY SCORE

/ 100

Predicted brand reliability is based on estimated problem rates for newly-purchased corded stick vacuums by the end of the fifth year of ownership, adjusting for extended warranty/service contract status, product usage, and the presence of pet hair in the home. Ranked #? of 6

Would our members recommend this brand?

OWNER SATISFACTION SCORE

/ 100

Brand owner satisfaction is based on the proportion of members who are extremely likely to recommend their corded stick vacuum to their friends and family. Ranked #? of 6

Source: Consumer Reports' 2023, 2024, and 2025 Winter Surveys

Features & Specs

Specs

Weight (lbs.)

8.8

Cord length (ft)

Battery type

25.2 volt Lithium ion

Brush on/off

Connections

Carpet POC

8.02520833

Bare floors POC

10.49999999

Edges POC

8.1

Noise POC

8.455

Pet hair POC

10.49999999

Clean emissions POC

7.81897178

Cordless POC

Yes

Run time POC (min.)

Charge time POC (hr.)

Price & Shop

Shark IONFlex 2X DuoClean Ultra-Light Cordless IF251

CR Expert Take

Overall Score

What goes into the Overall Score?

About

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