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Ownership burden/Robot Vacuums/4 robots compared/Reviewed Aug 2026

Narwal, Eureka, and Roborock Vacuums: What Do They Cost to Own?

$1,050 to $1,5495-year total. Purchase price is between 43% and 57% of what these machines actually cost to run.
Narwal Freo Z10 UltraView recordNarwalIIIFreo Z10 Ultra5-year total$1,450
Narwal Freo ProView recordNarwalIIIFreo Pro5-year total$1,050$699.99
Eureka J15 UltraView recordEurekaIIIJ15 Ultra5-year total$1,549
Roborock QV 35AView recordRoborockIIIQV 35A5-year total$1,150
Full specifications24 measurements · 61 of 96 documented
MSRP
$1,299.99
$699.99
$699
$649.99
Rated runtime
90 min
Not documented
Not documented
Not documented
Battery type
Li-ion
Not documented
Li-ion
Li-ion 5,200 mAh
Suction power
18,000 Pa
8,500 Pa
19,000 Pa
8,000 Pa
Noise level
53 dB
55 dB
73 dB
Not documented
Navigation
LiDAR + camera + AI obstacle avoidance
LiDAR 4.0 with forward 3D structured light obstacle detection
LiDAR with AI obstacle avoidance
PreciSense 360 degree LiDAR with multi-floor mapping for up to four levels and 2 cm threshold crossing; Reactive Tech obstacle avoidance using structured light.
Connectivity
wifi, bluetooth, alexa
wifi, bluetooth
wifi, alexa, google_home
wifi
Dimensions (W×D×H)
13.98 × 13.78 × 4.3 in
13.78 × 13.84 × 4.17 in
13.9 × 14 × 4.3 in
13.78 × 13.9 × 3.8 in
Weight
9.92 lbs
9.59 lbs
Not documented
Not documented
Form factor
round
round
round
Not documented
Readiness
Ready Now
Ready Now
Ready Now
Ready Now
Released
Apr 2025
Mar 2025
Mar 2025
Jan 2025
Mop lift
12 mm
12 mm
12 mm
Not documented
Threshold climb
1.6 in
0.8 in
Not documented
0.8 in
Dust bag capacity
2.5 L
1 L
3 L
Not documented
Water tank capacity
240 mL
Not documented
Not documented
Not documented
Dock type
Auto-empty, mop washing, hot-water washing
Auto-empty, mop washing, drying, auto water refill
Auto-empty, mop washing, drying, auto water refill
Auto-empty, mop washing, mop drying
Onboard dustbin
Not documented
800 mL
Not documented
Not documented
Suction
Not documented
Not documented
Not documented
8,000 Pa HyperForce
Mopping
Not documented
Not documented
Not documented
Dual spinning mops to 200 rpm with auto-lift
Dock
Not documented
Not documented
Not documented
Auto-empty, mop self-wash, cold air dry, auto water refill
Dustbin
Not documented
Not documented
Not documented
330 ml
Mapping
Not documented
Not documented
Not documented
Up to 4 floor maps, 2 cm threshold crossing
Brushes
Not documented
Not documented
Not documented
All-rubber anti-tangle main brush, zero-tangle arc side brush

Five-year 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

Narwal Freo Pro$700 purchase
$1,0505-year total+$600 past purchase
  • Purchase price (street)$450
  • Consumables (5 yr, est.)$600

Roborock QV 35A$650 purchase
$1,1505-year total+$500 past purchase
  • Purchase price (MSRP)$650
  • Consumables (5 yr, est.)$500

Narwal Freo Z10 Ultra$1,300 purchase
$1,4505-year total+$750 past purchase
  • Purchase price (current)$700
  • Consumables (5 yr, est.)$750

Eureka J15 Ultra$699 purchase
$1,5495-year total+$850 past purchase
  • Purchase price (MSRP)$699
  • Consumables (5 yr)$850

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 – Narwal Freo Z10 UltraMinor

Self-empty reliability and task completion flagged

$0 (owner intervention)

TechRadar's review reports mixed performance: mopping uses a large amount of water, self-empty was unreliable, and the robot did not always complete a full cleaning task without intervention.

TechRadar full review, accessed Aug 2026
Month 1 – Narwal Freo ProMinor

Small objects and low clearance trip up navigation

$0 (owner clears object)

AndroidGuys reports it navigates with confidence and rarely gets stuck, though socks and charging cables can still trip it up. How-To Geek's low-clearance couch, at 4.2 inches, went uncleaned entirely.

AndroidGuys and How-To Geek reviews, 2026
Month 3 – Eureka J15 UltraMinor

Sock entrapment triggers a help request

$0 (owner frees the sock)

TechAdvisor reports it avoids pets and floor items well but will occasionally eat a sock in a dark room. The robot signals for help rather than freeing itself.

TechAdvisor review of the J15 Ultra
Month 6 – Roborock QV 35AMinor

Occasional dock flooding reported by owners

$0 (no repair documented)

A six-month owner account and other reports describe occasional dock flooding as the most recurring hardware complaint, alongside minor firmware hiccups, with no regression that removed a capability.

Six-month Roborock QV 35A owner account
Month 6 – Roborock QV 35AMinor

Robot wedges under a low shelf twice

$0 (owner frees the robot)

The same six-month owner account puts the total rescue count at two, both from wedging under a low shelf the owner had not blocked off, not attributed to a machine fault.

Same six-month Roborock QV 35A account

Consumables breakdown

Annual cost by part type

Each line is the manufacturer-recommended replacement frequency multiplied by the current part cost. No assumptions about deep-cleaning intervals.

Part · frequencyNarwal Freo Z10 UltraNarwal Freo ProEureka J15 UltraRoborock QV 35A
Dust bag / bin75-120 days, variesNot verifiedNot verifiedNot verifiedNot verified
Mop padsRoughly annualNot verified$40-80/yr, category est.$50-80/yrNot verified
Filter3-12 monthsNot verifiedNot verifiedNot verifiedNot verified
Main / side brush3-12 monthsNot verifiedNot verifiedNot verifiedNot verified
Annual total~$150/yr, est.~$120/yr, est.~$170/yrNot verified

Common questions

What readers ask about this comparison.

Q.
Which of these four robot vacuums has the lowest published five-year cost?
Robovations’ scoring records five-year totals of $1,050 for the Freo Pro, $1,450 for the Freo Z10 Ultra and $1,549 for the J15 Ultra, based on each robot’s documented purchase price and consumable estimates. The QV 35A does not publish enough consumable pricing to produce a comparable total.
Q.
Do any of these vacuums require a subscription to use mopping or the auto-empty dock?
No. Each manufacturer’s own documentation states core autonomy and cleaning features work without a paid subscription tier.
Q.
Why doesn't the Roborock QV 35A have a published five-year cost estimate?
Its record notes owners describe replacement parts as affordable but cites no published price for the dock’s bag, mop pads, filter or main brush, so no dollar total can be built from documented sources.
Q.
Which docks reduce weekly hands-on tasks the most?
The Freo Z10 Ultra and Freo Pro docks wash and dry their own mop pads after every run and empty into a sealed bag rated for multiple weeks, so a routine week needs no manual pad or bin handling. The J15 Ultra and QV 35A both keep a weekly hand task: rinsing pads or refilling the water tank.
Q.
How were the failure events on this page documented?
Each event traces to a named reviewer or a multi-month owner account cited in the product’s own record. None is a repair over $100, and none of the four robots carries a recorded recall.
Next up

Do Robot Vacuums Keep Their Smart Features After Years?

Read the comparison
Comparison ID: RV–CMP–9293 · Last reviewed Aug 26, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes