There are many key factors we look at when helping you decide on a Dyson vacuum. Here are some of the ones we use to weigh scoring.
Cordless vs. corded
Cordless Dyson models (V-series, Gen5) prioritize portability for quick cleanups and multi-level homes but are limited by battery life. Generally, CNET only tests cordless vacuums in our testing lab, but that doesn’t mean corded isn’t the right choice. Our lab testing shows that most Dyson vacuums we recommend can last between 30-60 minutes on a single charge, depending on the mode you’re using them on. In contrast, corded models like the Dyson Ball Animal 3 and Dyson Big Ball Turbinehead deliver uninterrupted, max-power cleaning for deep carpet sessions or large areas, though they sacrifice maneuverability and weigh significantly more when accounting for the canister. Cordless vacuums are a good option for apartments or spot cleaning, while corded ones are good for whole-home deep cleans.
Battery life
We touched on this earlier, but battery performance varies drastically by mode. Eco Mode (50–85 mins) handles light dusting on hard floors, Auto Mode (30–45 mins), available on some models, automatically adjusts suction to accommodate mixed surfaces. Boost Mode or Max Mode is the highest suction setting for major messes, but it’ll drain the fastest (10-15 minutes). This makes it ideal for high-pile carpets or ground-in dirt. Models like the Gen5 Outsize include dual batteries, extending runtime to 140 minutes in Eco mode, but add significant weight at 8.6 pounds. Recharging also takes more than four hours after full depletion, so it’s not the best option for a quick cleaning session.
Suction
Measured in Air Watts (AW) suction is a measure of how effectively the vacuum can remove dirt from various surfaces. While the Gen5 Detect’s 262 AW excels on embedded carpet dirt, the V8’s 115 AW suffices for small spaces or hard floors.
The V11 is designed to handle pet hair without tangling.
Weight
Dyson’s cordless range spans the lightweight V12 Detect Slim at 5.5 pounds to the middle-of-the-pack V15 Detect at 7.5 pounds. Then there’s the notably heavy Gen5 Outsize at 8.6 pounds, which has dual batteries and a larger bin. Newer models also use buttons rather than the trigger found on older models, reducing finger fatigue during extended use.
Attachments
The latest Dyson models usually come with attachments like the Laser Fluffy head, which helps spot dust on hard flooring, and the Motorbar head, which works well on carpets. If you have pets that shed, the Hair Screw tool prevents pet-hair tangles, while the combination tool handles crevices. I have three cats, so I consider anti-tangle tech non-negotiable. The Hair Screw tool actively keeps hair off brush bars, while the Digital Motorbar uses 56 vanes to slice wrapped hair. The Groom tool captures shedding hair before it hits the floor. The Dyson’s name usually gives you an idea of what tools are included. The Absolute packs both floor heads, while the Animal focuses on pet tools. Top models like the V15 Detect and Gen5 Detect include most of these tools, while the Complete should include everything.
Filtration
All modern Dysons feature whole-machine HEPA filtration, capturing 99.97% of particles up to 0.3 microns. Flagships like the Gen5 Detect upgrade to enhanced sealed HEPA, trapping 99.99% of particles up to 0.1 microns. Filters require monthly washing and 24 or more hours of air-drying to maintain efficacy.
Dyson’s dual bin system separates wet waste from dry waste, making cleaning the machine much easier.
Floor types
Different floor types may be better suited for certain types of Dyson vacuums
Hard floors: Hard floors include hardwood, tile and vinyl. The Laser Fluffy Optic attachment used on the V15 Detect and Gen5 Detect uses green lasers to expose hidden dust, while soft rollers prevent scratching.
Carpets: Carpets include low-pile, mid-pile, and high-pile carpets. We primarily test low and mid-pile. Digital Motorbar heads auto-adjust suction for deep cleaning, while models like the Gen5 Detect excel on high-pile.
Mixed floors: If, like most people, you have both carpet and hard flooring in your home, options vary. The V15 Detect and Gen 5 automatically switches suction between surfaces, but just about any Dyson vacuum should be capable of handling both.
Noise
We don’t actively test noise levels with a decibel (dB) meter (that’s in our plans for the future), but Dyson does have information available on the noise its vacuums output. According to Dyson and publicly available information, the V12 Detect Slim (75 dB) is the quietest cordless model, while flagships like the Gen5 Detect peak at 85 dB at its max setting.
Storage
Most cordless Dyson models include a mounted wall dock that lets you dock the vacuum while it charges. The floor dock comes bundled with Gen5 Detect and stores the vacuum and five additional tools. Consider third-party organizers for compact models like the V12. Space constraints matter—larger models (Gen5 Outsize) need room for wide heads and batteries. Unlike competitors like Shark and Levoit, Dyson doesn’t offer self-emptying charging docks.
Maintenance
- Filters: Rinse monthly (cool water), air dry over 24 or more hours to prevent mold/motor damage.
- Brush Rolls: Clear wrapped hair weekly. Laser Fluffy rollers pop out easily.
- Bin Emptying: Empty as needed, rinse bin and fully dry monthly or as needed.
- Clogs: Check the cleaner head airways and wand if suction drops.
Warranty
All Dyson cordless vacuums have a two-year limited warranty, while upright and cylinder models get five years. Competitors such as Shark offer five year warranties for their cordless lineup. Extended warranties (up to five years total) can be purchased via Dyson’s site. A longer warranty period is good, because it means your vacuum is covered if a part breaks or something is defective.
The Dyson V15 Detect shines a laser on the floor to reveal dust and dirt particles.
Other features and technologies
- Laser Fluffy Optic: A cleaner head that can reveal hidden dust on hard flooring, usually denoted by Detect in the name.
- LCD Screens: Shows real-time runtime, power mode, maintenance alerts, particle counts, now available in newer models like the V15 Detect.
- Piezo Sensor: Available on the V15 Detect and Gen 5, it counts dust particles and shows cleaning effectiveness.
- Wet Cleaning: V15s Submarine (simultaneous vacuum/mop) and the Wash G1 (dedicated hard floor mop). CNET is currently testing the latter.
- App Connectivity: The Gen5 supports the MyDyson app, which provides usage stats, filter reminders and air quality reports (on purifier models).
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