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Ownership burden/Robot Vacuums/2 robots compared/Reviewed Aug 2026

Shark AI Ultra vs ROIDMI EVA: what ownership actually costs

$899 to $9255-year total. Purchase price is between 81% and 100% of what these machines actually cost to run.
Shark AI Ultra 2-in-1View recordSharkIIIAI Ultra 2-in-15-year total$925
ROIDMI EVAView recordROIDMIIIIEVA5-year total$899$899
Full specifications18 measurements · 27 of 36 documented
MSRP
$699
$899
Rated runtime
110 min
220 min
Charge time
240 min
Not documented
Battery capacity
75 Wh
Not documented
Battery type
Li-ion
Li-ion
Suction power
Not documented
3,200 Pa
Noise level
67 dB
Not documented
Navigation
360 degree LiDAR mapping with a sensor array for obstacle and drop detection; navigation processed on the robot
LDS LiDAR turret navigation (SLAM room mapping) with infrared obstacle-avoidance sensors; no camera
Connectivity
wifi, alexa, google_home
Not documented
Dimensions (W×D×H)
13.4 × 13.4 × 3.85 in
13 × 13 × 4.2 in
Weight
14.5 lbs
9.3 lbs
Readiness
Ready Now
Known Issues
Released
Jan 2022
Jan 2022
Dock type
Auto-empty (bagless), dust only
Auto-empty, mop washing, drying
Mop pads
Not documented
Dual 4-inch spinning pads, up to 180rpm, pressure-controlled downforce
Battery capacity
Not documented
5200mAh; manufacturer-rated 74-220 minute runtime depending on suction mode
Manufacturer status
Not documented
Roidmi announced closure December 15, 2024 and discontinued product maintenance, returns, and after-sales service within about a month
App
Not documented
Roidmi app or Xiaomi Home app

Cost of ownership

What each robot actually costs to own

Purchase price plus documented consumables, subscription gating, and replacement events. Bars share one dollar scale, so length is directly comparable. Costs are typical, drawn from manufacturer maintenance guides and owner reports.

PurchaseConsumables

ROIDMI EVA$899 purchase
$899Purchase price only
  • MSRP$899
  • Consumables (undocumented)$0

Shark AI Ultra 2-in-1$699 purchase
$9255-year total+$175 past purchase
  • Street price (typical)$750
  • Consumables, 5 years$175

Documented failure events

When things break, and what they cost

Field-reported failures placed on the ownership timeline, with associated repair or replacement costs. Sourced from owner forums and manufacturer service documentation.

Month 1 onward · Shark AI Ultra 2-in-1Minor

Brush roll wraps with hair and fiber

$0 (manual clearing)

Shark's maintenance documentation lists long hair and fibers wrapping the brush roll and side brush as a recurring, no-cost task requiring manual clearing rather than a hardware failure.

Shark manufacturer maintenance documentation
Month 8 · ROIDMI EVAMinor

Dustbin undersized for a full-floor clean

$0 (manual mid-run emptying)

An independent review (The Gadgeteer, 2022) found the onboard dustbin filled before a full-floor clean finished, requiring the owner to empty it by hand partway through the run.

The Gadgeteer independent review, 2022
Month 8 · ROIDMI EVAMinor

Mop pads stay damp after the drying cycle

$0 (manual air-drying needed)

The same review found the dock's mop-pad drying cycle ineffective, with pads remaining damp more than 12 hours later, pushing manual air-drying back onto the owner between mopping sessions.

The Gadgeteer independent review, 2022
Month 24 · Shark AI Ultra 2-in-1Minor

Cliff-detection and WiFi reconnect firmware regression

$0 (firmware update)

Owner reports and Shark's firmware changelog document early-2024 cliff-detection false positives and WiFi reconnect delays; later-2024 patches stabilized both, with no recurrence reported in more than a year since.

Shark firmware changelog · r/RobotVacuums owner reports
Month 35 · ROIDMI EVAMajor

Manufacturer Roidmi ceases operations entirely

$0 incurred, but ends all support

Roidmi announced its closure on December 15, 2024, and discontinued product maintenance, returns, and after-sales service within about a month; its own web domains are unreachable as of this record.

Roidmi closure announcement · KrASIA, Dec 2024

Consumables breakdown

Annual cost by part type

Each priced line is the manufacturer-recommended replacement frequency multiplied by the current part cost. No assumptions about deep-cleaning intervals. Where a part has no published price we leave it unpriced rather than estimate, so a total covering only some parts is shown as a floor with its coverage stated.

Part · frequencyShark AI Ultra 2-in-1ROIDMI EVA
Dust bin/bag~Every 60 days$0 / yr (bagless)Not priced
Mop padsAs pads wear out$0 / yr (washable)Not priced
FiltersMonthly rinse$0 / yr (rinsed)Not priced
Brush rollMonthly clearing; replaced on wear$35 / yrNot priced
Annual total$35 / yrcovers 4 itemized partsNot established0 of 4 parts priced

Common questions

What readers ask about this comparison.

Q.
Does the Shark AI Ultra's dock wash and dry mop pads automatically?
No. Manufacturer documentation describes the dock as bagless auto-empty for dust only; mop pads are removed, rinsed or machine-washed, and dried by hand after each session.
Q.
Is ROIDMI EVA's self-washing, self-drying dock reliable in practice?
An independent review (The Gadgeteer, 2022) found the design fell short: the dustbin filled before a full-floor clean finished and mop pads stayed damp more than 12 hours after the drying cycle.
Q.
Can I still get parts or support for a ROIDMI EVA?
Not from the manufacturer. Roidmi announced its closure on December 15, 2024 and discontinued maintenance, returns, and after-sales service; owners now depend on third-party retailers for any replacement parts.
Q.
What does the Shark AI Ultra cost to run over five years?
Robovations’ cost tracking documents roughly $750 at typical street pricing plus about $35 a year in brush and side-brush wear, for a five-year total near $925; the bagless dock, washable pads, and rinse-only filters carry no other recurring cost.
Q.
Why isn't there a five-year cost figure for the ROIDMI EVA?
Reported purchase prices for the EVA conflict across sources and could not be reconciled. With the manufacturer no longer operating, ongoing parts availability and pricing are unknown, so a longer-term total is not projected here rather than estimated.
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