Cleaning review
Roomba j7+ Review: It Sees the Dog Mess, Labs Argue About the Rest
Every source agrees it avoids obstacles better than anything else. On how well it actually cleans, one lab scored it 63 out of 100 and another measured 98 percent pickup.
By Paulo GerchonPublished 2 min read
Illustration, not a photo — we don’t have a licensed image of this product yet.
iRobot
iRobot Roomba j7+
Good · researched from 5 sources
Buy it for the camera, not the suction. If you have a pet that has ever had an accident, or a floor covered in cables, nothing else avoids trouble this reliably. If you just want the most debris lifted per pass, the labs cannot agree that this is it.
- Buy if
- Homes with pets, where avoiding an accident matters more than airflow · Floors with cables, socks and toys that defeat other robots · Multi-storey homes, given the ten-level mapping
- Skip if
- Anyone who wants maximum raw cleaning power · Households with long human hair, per VacuumWars · Dark rooms, since the avoidance depends on a camera
We don’t list prices, because Amazon’s change hourly.
The one thing nobody argues about
Robot vacuums have historically had one catastrophic failure mode, and everybody who owns a pet knows what it is.
The j7+ has a forward-facing camera and a trained model behind it, and all three of our sources watched it avoid simulated pet waste without touching it. Best Cordless Vacuum Guide describes the object database as over 170 items and calls the detection the best among robots they have tested.
iRobot backs it with a replacement guarantee for the first year. Companies do not underwrite failure modes they expect to hit.
That is the product. Everything else about this robot is contested.
The labs do not agree on cleaning
Best Cordless Vacuum Guide measured pickup by debris type and got 98.46 percent on sand, 100 percent on coffee grounds, 97.6 on quinoa and 91 on pet litter, all on hard floors. Carpet came in between 94 and 99 percent.
VacuumWars scored its carpet deep clean 91, which they place second only to the much more expensive s9+.
TechGearLab scored hard surface cleaning 5.3 out of 10, gave it 63 overall, and called the cleaning performance average.
Those cannot all describe the same machine unless the test does the work, and looking at what each lab threw at it, that appears to be exactly what happened. TechGearLab's robot handled flour excellently and could only drag six pieces of cereal along the floor. Fine debris, fine. Large debris, badly.
The airflow explains it
Best Cordless Vacuum Guide measured 7.27 CFM, which they note matches entry-level robots, and VacuumWars separately calls the suction and airflow numbers very low.
Both then observe that the cleaning results beat what those numbers predict, crediting the counter-rotating rubber extractors that physically lift debris rather than relying on air to move it.
That mechanism works well on fine grit pressed into carpet and badly on anything large enough to be pushed instead of picked up. Which is precisely the pattern in the disagreement above.
Living with it
It maps properly. Imprint Smart Mapping stores up to ten levels, so a multi-storey home is handled without re-learning the floor each time.
It is quiet while working, at 61 to 63 dB depending on which lab you ask. The dock is not: Best Cordless Vacuum Guide measured 84.2 dB when it empties.
TechGearLab's complaints are about the software rather than the hardware. Spot cleaning zones can only be squares, and there is no way to adjust suction at all. They also noticed it treating furniture roughly, accelerating and jerking in a way gentler robots do not.
And there is one irony worth naming. TechGearLab found that having avoided an obstacle so carefully, it does not clean the floor around it. The mess stays, politely undisturbed.
How it scored
The overall 7.4 is the weighted average of these five criteria — we never adjust it by hand.
Cleaning performance
The sources split badly. Best Cordless Vacuum Guide measured 91 to 100 percent on hard floors, VacuumWars scored its carpet deep clean 91, and TechGearLab scored hard surfaces 5.3 out of 10.
Value
Priced as a premium robot. TechGearLab's overall 63 out of 100 and their note that it lacks top-tier intelligent features are the counterweight.
Build quality
No durability problems reported anywhere, though TechGearLab observed it being a little abusive to furniture, accelerating and jerking.
Ease of use
Imprint Smart Mapping stores up to ten floor levels and the dock holds 2.4 L. TechGearLab criticises square-only spot zones and no suction adjustment.
Obstacle avoidance
The one thing every source agrees on. Best Cordless Vacuum Guide calls it best in class against a database of over 170 objects, and both other labs saw it avoid simulated pet waste completely.
Pros and cons
What we liked
- Obstacle avoidance that all three sources rate best in class, including pet waste
- Best Cordless Vacuum Guide measured 98.46 percent on sand and 100 percent on coffee grounds on hard floors
- VacuumWars scored its carpet deep clean 91, second only to the Roomba s9+
- Quiet at around 61 to 63 dB while vacuuming
- Imprint Smart Mapping remembers up to ten floor levels
What we didn’t
- TechGearLab scored it 63 out of 100 overall and only 5.3 for hard surface cleaning
- Best Cordless Vacuum Guide measured just 7.27 CFM of airflow, matching entry-level machines
- VacuumWars found long human hair gets caught rather than collected
- The dock is loud when emptying, measured at 84.2 dB
- TechGearLab found no suction adjustment and only square spot-clean zones in the app
- It cleans poorly around the obstacles it politely avoids
Specifications
| Obstacle avoidance | PrecisionVision camera, database of over 170 objects per Best Cordless Vacuum Guide |
|---|---|
| Airflow | 7.27 CFM measured by Best Cordless Vacuum Guide |
| Hard floor pickup | 91 to 100 percent by debris type per Best Cordless Vacuum Guide |
| Carpet pickup | 94 to 99 percent on low and mid pile per Best Cordless Vacuum Guide |
| Carpet deep clean | 85.75 percent per Best Cordless Vacuum Guide; scored 91 by VacuumWars |
| Battery | Up to 90 minutes; iRobot claims 75 per VacuumWars |
| Robot bin | 400 ml per Best Cordless Vacuum Guide; 250 ml per VacuumWars |
| Dock capacity | 2.4 L per Best Cordless Vacuum Guide, 2.2 L per TechGearLab, 2.6 L per VacuumWars |
| Noise | About 61 dB per VacuumWars, 63 dB per Best Cordless Vacuum Guide; dock 84.2 dB |
| Mapping | Imprint Smart Mapping, up to ten levels |
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How we researched this
We have not had this unit on the bench. This review synthesises the manufacturer’s published specifications, independent measurements and owner reports listed below. Every figure on this page comes from one of those sources rather than our own measurement.
5
sources reviewed
Three labs with three different debris sets, which is why this review reports a range rather than a verdict on cleaning. Best Cordless Vacuum Guide supplies the per-debris percentages, the airflow measurement and the noise figures. VacuumWars supplies the carpet deep clean score and the hair finding. TechGearLab supplies the category scores and the much lower overall rating, which we have not discarded simply because it is the least flattering. Where the three give different dock and bin capacities, the specification table lists all of them rather than picking the middle.
What we read
Common questions
Does the Roomba j7+ really avoid pet waste?
How well does it actually clean?
Why is the airflow so low?
Does it handle long hair?
How loud is it?
The bottom line on the iRobot Roomba j7+
Buy it for the camera, not the suction. If you have a pet that has ever had an accident, or a floor covered in cables, nothing else avoids trouble this reliably. If you just want the most debris lifted per pass, the labs cannot agree that this is it.
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