Torn between Freo Z Ultra and Centaur RHSV2211 for your next cordless vacuum?

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We examine the Freo Z Ultra – a battery-power vacuum by Narwal, comparing runtime, dust tank, and costs, with – Centaur RHSV2211 by Russell, analysing real-world vacuuming performance.
By assessing these vacuums – the Freo Z Ultra and Centaur RHSV2211 from NARWAL and RUSSELL, you get the best floorcare machine.
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Get DealNARWAL Freo Z Ultra vs RUSSELL Centaur RHSV2211 – key Specifications
NARWAL Freo Z Ultra Specs

- Product Brand: NARWAL
- Cordless Vacuum Model: Freo Z Ultra
- Type of Vacuum: Robot
- Battery Life: 210 Minutes
- Dirt Tank Capacity: 2.5L
- Weight: 4.5KG
- Colour: Grey
- RRP: £949.00
RUSSELL Centaur RHSV2211 Specs

- Product Brand: RUSSELL
- Cordless Vacuum Model: Centaur RHSV2211
- Type of Vacuum: Stick
- Battery Life: 60 Minutes
- Dirt Tank Capacity: 0.5L
- Weight: 2.85KG
- Colour: Grey & Blue
- RRP: £69.99
Freo Z Ultra and Centaur RHSV2211 Cordless Battery Run Time
NARWAL Robot cordless vacuums, like the Freo Z Ultra, provides lightweight portability without mains cables. Centaur RHSV2211 Stick is also cordlessly powered by a RUSSELL rechargeable battery.
The Russell Centaur RHSV2211 has a battery supply runtime of 60 minutes of cleaning, compared to the Narwal Freo Z Ultra which has 210 minutes life.
- NARWAL Freo Z Ultra Runtime: 210 mins continuous vacuuming
- RUSSELL Centaur RHSV2211 Runtime: 60 mins continuous vacuuming
Charging times between the Freo Z Ultra and Centaur RHSV2211 varies – check manual.
Cordless Vacuum Dust Tank Capacity
Both Narwal Freo Z Ultra and Russell Centaur RHSV2211 are bagless, storing dust, hairs, dirt, and debris inside a sealed 2.5 litre and 0.5 litre tank, respectively. The Centaur RHSV2211 by RUSSELL holds up to 0.5 Litre of compressed dirty particles. The Freo Z Ultra by NARWAL has a capable capacity of 2.5 litre for manual disposable.
- Freo Z Ultra onboard dirt/dust tank size: 2.5L
- Centaur RHSV2211 onboard dirt/dust tank size: 0.5L
Floor Cleaning Types
Narwal’s Freo Z Ultra and Russell’s Centaur RHSV2211 brush heads are effective on every surface – carpets & deep-pile rugs, hard floors (laminate, wood, tiles), vinyl, even upholstery, and stairs.
Their only limitation is the Centaur RHSV2211 and Freo Z Ultra can’t vacuum liquids. For this, a RUSSELL or NARWAL ‘wet and dry’ vacuum is needed.
Most Narwal and Russell battery powered vacuums include accessories. Check Freo Z Ultra or Centaur RHSV2211 manual for specifications and attachments.
Vacuum Filtration
The Centaur RHSV2211 and NARWAL Freo Z Ultra include effective filters to capture dust, dander, pollen, hairs, and fibres.
NARWAL and RUSSELL use HEPA, foam, or cloth, filters. Freo Z Ultra and Centaur RHSV2211 maintain suction and clean exhaust air.
RUSSELL and NARWAL Reviews
Combined feedback from 406 reviewers shows the Freo Z Ultra with a rating of 4.4/5 stars, and the Centaur RHSV2211 vacuum gains a 4.5/5 average from 188 reviews, showing comparable reliability results.
| Brand | Model | Runtime | Weight | Tank | Best Price |
| NARWAL | Freo Z Ultra | 210 M | 4.5 | 2.5L | £949.00 |
| RUSSELL | Centaur RHSV2211 | 60 M | 2.85 | 0.5L | £69.99 |
Best Buy: Shark PowerPro Cordless Stick Vacuum
Best cordless vacuum – Shark PowerPro – beating Freo Z Ultra and Centaur RHSV2211 on performance and value
Limited Offer
Get Deal