AI Ultra Self-Empty
3 independent reviewsRead the findings →An older, vacuum-only Shark that maps with a laser and empties itself into a bagless base. It suits fairly tidy homes with mostly hard floors. It bumps into small objects, though, and struggles with hair pressed into carpet.
Updated
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Where it sits in Shark’s range
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What reviewers found
Three sources: RTINGS measured it in its lab, Vacuum Wars bought and tested the AV2501AE version, and Modern Castle ran it through measured tests in its office. Vacuum Wars and Modern Castle both rate its everyday pickup, especially on hard floors, and like the bagless base. All three agree it has no real obstacle recognition. They differ on pet hair, and on the app, which Modern Castle found intuitive and Vacuum Wars found buggy.
RTINGS, lab test (tested on the AV2501S (RTINGS groups AV2501AE/AV2501S/AV2511AE/RV2502AE)) · Vacuum Wars, lab test (tested on the AV2501AE) · Modern Castle, hands-on, Feb 2024 (tested on the RV2502AE)
Hard floors
Reviewers rate it highlyModern Castle measured almost total debris removal on hardwood, and Vacuum Wars found surface pickup good all round, including kitty litter on hard floors, even on lower power.
Carpet and rugs
Reviewers rate it highlyModern Castle found strong pickup on both low- and high-pile carpet, and Vacuum Wars rated it above average in its embedded-sand carpet test.
Pet hair
Mixed resultsVacuum Wars found it did very well with pet hair, though long hair needs cutting off the brush. Modern Castle saw more than half its rubbed-in hair left in high-pile carpet, and RTINGS found it struggled on low-pile carpet.
Navigation and obstacles
Reviewers found problemsMapping and coverage are good, but it doesn't really dodge objects. Modern Castle saw it fail to avoid three of four test objects, and Vacuum Wars found it lacks camera recognition and tends to get stuck in tight spots.
Dock and upkeep
Reviewers rate it highlyVacuum Wars and Modern Castle both liked the bagless base, which emptied the robot reliably after regular runs with no bags to buy. It struggled only after two weeks of built-up cat hair in Vacuum Wars' test.
App and software
Mixed resultsModern Castle found the app intuitive, though limited to one scheduled clean a day. Vacuum Wars found it buggy, often needing a restart, with no live view of the robot on the map.
Noise
Mixed resultsRTINGS called it very quiet, but Modern Castle found it average, loud enough to interrupt a nearby conversation, and measured 79.8dB when the base empties.
Reliability and support
Not enough evidenceNone of the reviews we use ran it long-term or judged Shark's support yet.
Value
Not enough evidenceOnly Vacuum Wars judged value, calling it an incredibly good-value robot that cleans both hard floors and carpets well for the price.
Verdicts come from independent, hands-on, finished reviews. An area needs at least two of them before we say more than “Not enough evidence”. We don't score robots ourselves. How this works
Strong everyday pickup, especially hard floors
Modern Castle measured 99.8% debris removal on hardwood and about 95% on both low- and high-pile carpet. Vacuum Wars found it above average in its embedded-sand carpet test and said surface pickup was good all round, including kitty litter on hard floors, even on lower power. For crumbs, dust and grit in a normal home, it does the main job well.
Hair is where opinions split
Vacuum Wars said it did perfectly with pet hair, though long hair still needs cutting off the brush now and then. Modern Castle rubbed hair into high-pile carpet and found more than half left after two passes. RTINGS rated it poor for pet hair across the board: it cleared hair from bare floors and thick carpet but struggled on low-pile carpet, and long hair wrapped the brush. With a shedding pet, expect regular brush cleaning and some missed fur.
It doesn't really dodge objects
The AI in the name is mostly marketing, according to Vacuum Wars. There's no camera-based object recognition, so it won't avoid things too low for its laser or too light to trigger its bumper. Modern Castle saw it fail to avoid three of its four test objects. Vacuum Wars also found it too persistent in tight spots and relied on no-go zones to stop it getting stuck. Tidy the floor first.
Good mapping and coverage
Vacuum Wars recorded close to complete coverage of both its small and large test rooms, and Modern Castle watched it clean a cluttered 1,000 sq ft office in 70–80 minutes, returning to base without getting stuck. That's slower than the average robot Modern Castle has tested, and Vacuum Wars found battery life below average, so larger homes may need a recharge mid-clean before it resumes.
Bagless base, fussy app
Vacuum Wars and Modern Castle both liked the bagless base. Vacuum Wars found it emptied the robot's bin reliably after regular runs, though not after two weeks of built-up cat hair, and RTINGS noted the base's HEPA filter but would rather it used bags for cleaner emptying. On the app, Modern Castle found it intuitive but was limited to one scheduled clean a day, while Vacuum Wars often had to restart it and missed a live view of the robot on the map.
Covers the vacuum-only AI Ultra Self-Empty sold in the US under RV2502AE, AV2501AE, AV2501S and AV2511AE; RTINGS says these differ mainly in colour and base capacity. Vacuum Wars tested the AV2501AE. The European AI Ultra 2-in-1 is a different robot.
Our take
Should you buy the AI Ultra Self-Empty?
Best for: Homes wanting a vacuum that empties itself without dust bags. Skip it if: You want it to scrub floors or wash its own mop.
a no-fuss, bag-free vacuum for a fairly tidy home with mostly hard floors and no need to mop. The Roborock Q8 Max+ is the better-reviewed self-emptying vacuum, and Shark's own Matrix Plus 2-in-1 adds a vibrating mop if you want one.
The AI Ultra Self-Empty is a vacuum-only robot from Shark's US range. It maps your home with a spinning laser, can go over rooms twice in a criss-cross pattern, and tips its dirt into a bagless base, so there are no bags to buy. Despite the name it has no camera to recognise objects. It's been sold under several model numbers that differ mainly in colour and base size, and the European AI Ultra is a different robot with a mop.
Modern Castle measured almost total debris removal on hardwood and strong pickup on carpet, and Vacuum Wars found surface pickup good all round, even on lower power. Hair splits them. Vacuum Wars said it did very well with pet hair, though long hair needs cutting off the brush, while Modern Castle saw more than half its rubbed-in hair left in high-pile carpet and RTINGS found it struggled on low pile. All three agree it has no real obstacle recognition, and Modern Castle saw it fail to avoid three of its four test objects. Both Vacuum Wars and Modern Castle liked the bagless base, which emptied reliably, but Modern Castle measured 79.8dB when it empties. The app was intuitive for Modern Castle and buggy for Vacuum Wars, which often had to restart it.
Before you buy
The questions people ask about this one
Will it avoid cables and pet mess?
No. Vacuum Wars found it has no camera-based obstacle avoidance, only its laser and bumper, and Modern Castle saw it fail to avoid three of four test objects. Pick up cables, socks and anything a pet might leave before every run.
Does it fit under low furniture?
Only if you have a decent gap. Shark doesn't publish the robot's height, but RTINGS found it needs 10.5cm of clearance to get under furniture. Measure under your sofa and bed before you buy.
Can it cross rugs and raised thresholds between rooms?
Shark doesn't give a climbing height. RTINGS measured the tallest threshold it could get over at 1.9cm, which covers most low doorway thresholds but not chunky ones. Modern Castle found carpet pickup strong on both low and high pile, apart from embedded pet hair.
How often do I have to empty anything?
Shark claims the bagless base holds up to 60 days of debris, per the specifications. Vacuum Wars found it emptied the robot reliably after regular runs, and Modern Castle rated maintenance excellent with no bags to buy. You'll still need to clean filters and cut long hair off the brush.
Is it noisy?
It's average. Modern Castle measured 64.4 to 67.3dB across suction modes and 79.8dB while the base empties, loud enough to interrupt a conversation nearby. RTINGS called it very quiet, which helps if a pet dislikes noise.
Alternatives
Other robot vacuums to compare.
Q8 Max+
Why consider it: A self-emptying vacuum that reviewers rate for pickup and mapping, with a basic mop added.
The compromise: Edges and small obstacles still catch it out, and long hair tangles on its rollers.
RV20 Max Plus
Why consider it: A compact self-emptying robot with laser mapping that suits smaller homes.
The compromise: It can get caught under low furniture and on loose objects.
PowerDetect NeverTouch Pro 2-in-1
Why consider it: Shark's step up, with mopping and a dock that refills water and looks after the pad.
The compromise: Testers found its mopping and edge cleaning less convincing than the dock suggests.
Specs
Full specifications
Each specification names its source. Manufacturer claims are not independent test results; unconfirmed figures are labelled.
Owner reviews
Do you own the AI Ultra Self-Empty?
Tell people how it’s held up: cleaning, maintenance, faults and support. Owner accounts are shown separately from independent reviews.
Sources
Where this page’s findings come from
Editorial reviews
- RTINGS: Shark AI Ultra Robot review ↗5.8 / 10Lab test · Tested on the AV2501S (RTINGS groups AV2501AE/AV2501S/AV2511AE/RV2502AE)
- Vacuum Wars: Shark AI Self Empty XL review (AV2501AE) ↗Lab test · Tested on the AV2501AE
- Modern Castle: Shark AI Ultra review ↗96%Hands-on · Tested on the RV2502AE
Sources
Videos
- Search YouTube for Shark AI Ultra Self-Empty ↗Search results may include company demonstrations or similar models. Check the source and model name; a demonstration is not an independent performance test.