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Comparisons · Robot Vacuums2 robots · checked 16 Oct 2026

Cost to own

Which flagship vacuum-mop has the lowest annual consumables bill?

The price on the box is where owning one starts. This page adds a year and three years of the parts each maker prices and gives an interval for, and counts the failures that need a person.

Down a narrow utility passage, a white Dreame X50 Ultra and a black Roomba Combo j9+ work in front of their docks on facing walls, both dock lids raised: both full bags lifted out onto the boards, a carton of new bags open in the foreground.

This page checks

  1. Three years, pricedList price plus the parts each maker prices
  2. What you replaceEach part, how often, and a year of it
  3. Failures that need youOf those on each record
Dreame X50 Ultra

Dreame

X50 Ultra

IVEnvironmental76Strong
$1,599.99list
Where to buy

ProLeap firmware update improves leg reliability

Full specifications18 figures on record · 13 differ
Figure
X50 Ultra
Roomba Combo j9+
List price
X50 Ultra$1,599.99
Roomba Combo j9+$1,399
Released
X50 UltraFeb 2025
Roomba Combo j9+Sep 2023
Dock
X50 UltraAuto-empty, mop washing, hot-water washing, drying, auto water refill
Roomba Combo j9+Auto-empty, auto water refill
Onboard bin
X50 Ultra395 mL
Roomba Combo j9+170 mL
Water tank
X50 UltraNot on record
Roomba Combo j9+170 mL
Dock dust bag
X50 Ultra3.2 L
Roomba Combo j9+Not on record
Mop lift
X50 Ultra10.5 mm
Roomba Combo j9+Not on record
Threshold climb
X50 Ultra2.4 in
Roomba Combo j9+0.6 in
Weight
X50 Ultra9.99 lb
Roomba Combo j9+8.9 lb
Runtime
X50 Ultra220 min
Roomba Combo j9+120 min
Charge time
X50 Ultra240 min
Roomba Combo j9+180 min
Battery capacity
X50 Ultra92 Wh
Roomba Combo j9+82.5 Wh
Suction
X50 Ultra20,000 Pa
Roomba Combo j9+10,000 Pa
Noise
X50 Ultra68 dB
Roomba Combo j9+75 dB
Navigation
X50 UltraVersaLift retractable LiDAR with 360-degree coverage, dual RGB cameras, AI obstacle avoidance, visual SLAM mapping
Roomba Combo j9+PrecisionVision Navigation: front-facing camera with iRobot OS object recognition for pets, cords, socks, and shoes
Size
X50 Ultra13.5 × 13.5 × 3.5 in
Roomba Combo j9+13.7 × 13.7 × 3.4 in
The same on both
Battery type
X50 UltraLi-ion
Roomba Combo j9+Li-ion
Connectivity
X50 UltraWi-Fi, Bluetooth, Matter, Alexa, Google Home
Roomba Combo j9+Wi-Fi, Bluetooth, Matter, Alexa, Google Home

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Consumables

What a year of upkeep costs on each flagship

Up front the two are within $201 of each other. Three years of priced parts put them $714 apart at least, and the largest single yearly cost among the parts is the X50 Ultra’s cleaning solution, about $54 a year.

DreameX50 Ultra
iRobotRoomba Combo j9+
1Three years, pricedRobot plus 3 years of priced parts. One scale.
X50 Ultra$0$1,000$2,000$3,000+1 unpricedrobotparts

$2,235+

$1,600 robot, then $212 a year in parts. 1 not counted.

Maker store prices
Roomba Combo j9+$0$1,000$2,000$3,000+5 unpricedrobot

$1,521+

$1,399 robot, then $41 a year in parts. 5 not counted.

Maker store prices
2What you replaceMaker's interval, and a year of it at the maker's price
X50 Ultra

  • Dust bagevery 2–4 months$18/yr
  • Mop padevery 1–3 months$40/yr
  • Filterevery 3–6 months$35/yr
  • Main brushevery 6–12 months$45/yr
  • Side brushevery 3–6 months$20/yr
  • Cleaning solutionevery 3–6 months$54/yr
  • Kitno maker intervalno interval
6 of 7 parts costed
Roomba Combo j9+

  • Dust bagUp to 60 days per bag$41/yr
  • FilterTypical: every 3–6 monthsno interval
  • Main brushTypical: annuallyno interval
  • Side brushTypical: every 3–6 monthsno interval
  • Mop padAfter up to 30 washesno price
  • Kitno maker intervalno interval
1 of 6 parts costed
3Failures that need youOf those on its record
X50 Ultra

2 of 3

need a person to fix.

Its record
Roomba Combo j9+

3 of 4

need a person to fix.

Its record

Same on both: no paid plan found for an owned robot. Prices are each maker’s own US store, list prices only; a part counts only when its maker states both a price and an interval.

Fit CheckX50 Ultra and Roomba Combo j9+ carry the same verdict on every condition their Fit Checks share, so a fit control would give the same answer for each. Each robot’s own page has its full Fit Check.

On a kitchen floor a white Dreame X50 Ultra lies upside down on a folded towel, one worn grey mop pad still on and the other off beside it, with a new pair of pads waiting.

Everything else

Where they land among 259 robot vacuums

Only the measures on which these two differ. The bar is the whole category; the block is the typical middle half; the tick is the median.

List priceUS, maker's list price
X50 Ultra

$1,600
Roomba Combo j9+

$1,399

$160typical $549–$1,200 · median $800$2,600
RuntimeOne charge, maker figure
X50 Ultra

220 min
Roomba Combo j9+

120 min

60typical 120–207 · median 180360

Sources

Where every figure comes from

  • Dreame X50 Ultra · dreametech.com product page; Dreamehome app listing (App Store)
  • Roomba Combo j9+ · irobot.com product page; Roomba Home app page

A part counts toward a year only when its maker states both a price and an interval. A part with either missing is listed and left out of the total, never estimated.

Questions

What readers ask

Why is a total marked with a plus?

Some of that robot’s parts have no maker price or no maker interval, so they are listed but not counted. The real total is at least the number shown.

Does either of these need a subscription?

No paid plan was found for either. The Dreamehome App Store listing shows no in-app purchases, and iRobot’s Roomba Home app page lists no paid tier.

Do third-party parts change the bill?

This page prices only each maker’s own parts, so it does not show third-party costs. Their fit and lifespan are not documented by the makers.

Common questions

What readers ask about this comparison.

Next up

Which robot vacuums still clean when Wi-Fi is down?

Read the comparison
Comparison ID: RV–CMP–1897 · Last reviewed Feb 15, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes