Roomba models, explained: The guide to deciding which Roomba to buy on Prime Day

Who it's for:

Not everyone in the market for a robot vacuum is willing to pay over $1,000 just to take a chore or two off of their plate. Those who would be down for that investment want a deep clean on both carpet and hard floors that goes past casual surface-level upkeep, and they want it to happen without having to babysit the bot. The Combo j9+ would be particularly worthwhile in large homes with an even mix of floor types that are high-traffic areas for people and several pets.

Why we picked this:

iRobot further built on its legacy in Sept. 2023 when it debuted the all new j9 series. As the number and letter mashup in the title suggests, the Combo j9+ finally combines the best features of the older high-end Roombas: the navigational prowess and small obstacle detection of the j7+, the retractable mop that we loved on the Roomba Combo j7+, and the carpet combing suction power of the Roomba s9+.

The Roomba Combo j9+ also introduces new features that lead to a deeper clean on both wet and dry fronts. The new SmartScrub technique pushes the mop back and forth while applying elbow grease to eat at dried-on stains on hard floors, while its dry suction power beats anything a Roomba has been able to dish out before.

The new dock is bigger and better than previous docks from iRobot, and that's because there's more going on than just automatic emptying of the dust bin. The Combo j9+ dock holds a separate water tank that automatically refills the smaller tank on the vac itself for 30 days at a time, relieving a major recurring downfall seen when comparing the old Combo j7+ to other hybrid models. Any maintenance can be done through a door on the front of the dock rather than the top — and with the chic wood accents topping off the new design, you suddenly have a new full-time side table.

Who it's for:

If your main concern past actual cleaning is keeping your phone chargers and HDMI cords safe, you're probably looking at a Roomba j6+ versus j7+ showdown. We'll make that comparison easy: Unless mopping is also a priority, go with the j6+. We think it's the best Roomba for most people because of its solid balance of obstacle-avoiding brainpower and affordability.

Why we picked this:

While the feature differences between the Roomba j7+ and Roomba j6+ are mild, the prices aren't — the Roomba j6+ goes on sale for as low as $399.99 while the j7+ is usually hovering between $529.99 and $589.99.

So, what's the difference? The Roomba j6+ is the cheapest Roomba that can detect and avoid phone chargers and pet waste. Compared to the Roomba j7+, the j6+'s obstacle detection cameras aren't quite as precise, and still may require you to pick up things like towels or put a virtual barrier around pet bowls. Their suction power and self-empty dock capacity are exactly the same, however. And considering that the sale price of the j7+ is typically over $200 more expensive, you can probably deal with ensuring socks get into the hamper.

Who it's for:

The cheapest mopping Roomba will satisfy anyone who can settle for not-the-most-thorough-but-decent cleaning if it means they don't have to spend much more than $500. This is especially true in homes where only one or two rooms, like the bathroom or kitchen, will require mopping. Potential i5 owners will also have to be OK with having to physically switch out the water tank for the dry dust bin depending on which flooring they're trying to tackle, since the i5 is a Swap and Mop Roomba rather than the design with a mopping pad built in.

Why we picked this:

iRobot's summer 2023 product drop also extended mopping capabilities to one of the more affordable existing Roombas. At $549.99 for the self-emptying version or $349.99 for the standalone vac, the i5 more than halves the $1,399.99 price tag of the Combo j9+. You probably wouldn't clock that price difference upon first glance, though, because the i5+ has shed the tall, skinny auto-empty dock it had for years for the stylish compact one of the j7+.

The i5 series is one of iRobot's Swap and Mop models that can't vacuum and mop on the same cleaning run, meaning you have to be around to physically swap the dust bin for the water tank. The convenient part is that, despite its inability to detect small obstacles like phone chargers, the i5 remembers specific rooms as well as the carpeted spots you want it to avoid while mopping. (A 2022 firmware update unlocked Imprint smart mapping capabilities for all Roomba i series vacuums, aside from the i1 and i2).

Who it's for:

If you've confirmed that you definitely want a Roomba that mops, the next question is whether you'd like to be able to freely switch between vacuuming and mopping mode even if you're not home.

The Combo j7+ is the cheapest Roomba that has the retractable mop on board, meaning you don't need to be home to manually swap out the dry dust bin like you do with the Combo i5. Even on sale, $799 is a pretty hefty investment — but unless you have multiple pets that shed onto thick carpet and hard floors with heavy foot traffic, the Combo j7+ provides a nearly-identical hands off experience to the Combo j9+ for much less money.

Why we picked this:

The Combo j7+ was the very first true vacuum and mop hybrid from iRobot. Though it's since been upstaged by the 2023 Combo j9+, the 2022 Combo j7+ will always be pivotal for iRobot's legacy — and because it's not the newest 2-in-1 anymore, it's also usually on sale.

Its original retail price of over $1,000 was actually many folks' only big gripe with this model. But if you can find it at its new normal sale price of $799, you'll be scoring one of the smartest robot vacuums on the market for a pretty digestible cost. With PrecisionVision cameras for small obstacle detection and a mop that lifts over the vacuum itself, the Combo j7+ can be trusted to not eat your phone charger and not soak your carpet.

Compared to the Combo j9+, the j7+ has less powerful suction power, less forceful scrubbing, and doesn't automatically refill the water tank aboard the vacuum through a bigger tank in the dock. Compared to the j6+, the j7+ has more meticulous obstacle detection and can pinpoint hurdles like socks, towels, and pet bowls on top of cords and pet waste.

Read our full review of the iRobot Roomba Combo j7+.

Who it's for:

The Roomba i3+ is the Roomba for those on a budget who still want to be off the hook from manually dumping their vacuum's dust bin after every cleaning session. Homes with a pet, crumb-prone kids, or a decent amount of carpeting would benefit from the i3's boosted suction power over the cheaper 600 Series.

Note: The Roomba i Series is the most prominent example of this odd retailer-exclusive spinoff thing that iRobot seems to do with certain retailers. Walmart sells the Roomba i1+ for as low as $288, which is a different color but otherwise physically identical to the i3+. However, the i1+ didn't receive the software update that unlocked room-to-room mapping, as the i1 and i2 were skipped for some reason. The Roomba i4, which has identical cleaning capabilities to the i3, is mostly only seen at Amazon — the only difference is its inclusion of an extra filter and virtual wall.

Why we picked this:

Now that smart mapping and automatic emptying have become casual features seen more frequently than the most high-end robot vacuums, options like the Roomba i3+ can offer a more affordable path to that hands-off convenience. A 2022 software updated blessed the Roomba i3 (and the rest of the i Series) with iRobot's Imprint Smart Mapping technology, so the Roomba i3 can tackle specific rooms that you queue up on the app. (The mapping update didn't include Keep Out Zones, so you'll still need to purchase virtual barrier devices to make certain spots off limits within a room.)

Though the i3 won't be immune to getting tripped up on a bath mat or under a table once in a while, its navigation skills are less bumper car-ish than the 600 Series Roombas.

Who it's for:

The older 692 model (or its close cousin, the 694) will be a satisfactory choice for anyone whose robot vacuum checklist maxes out at hardwood, tile, or linoleum upkeep and the ability to schedule cleanings.

However, if your main priority is staying near or under $200 and you're not specifically set on a Roomba, I'd suggest opting for the Shark Matrix RV2300 instead. It brings smart mapping into the picture for less than $200 on sale (which it almost always is) — an absolutely crucial upgrade for a mere $30-ish more than this Roomba's sale price.

Why we picked this:

The standard clean deployed by this base-tier Roomba is enough to trust for light daily cleaning, especially if the majority of your home is covered in hard flooring. Rugs can usually be sufficiently cleaned of surface-level crumbs with its slightly-outdated loosen and lift system. However, I don't necessarily trust the 692 on rugs anymore after it pulled several six-inch long threads from my living room flat weave whilst attempting to clear the negligible height difference from the hardwood.

Fun fact: The only difference between this model and the Roomba 694 is that the latter comes with an extra filter, but its sale price is often a few dollars more than the 692.

Who it's for:

The Roomba s9+ could still be the way to go if the Roomba j9+ isn't on sale and you definitely don't want to spend much more than $600 on a Roomba. Despite being succeeded by several newer releases from iRobot, the s9+ still has the second-best suction power of any Roomba (it has the same power as the Roomba Combo j9+, but without the mopping) and dual roller brushes that dig into carpet fibers to pull out embedded crumbs or fur.

Why we picked this:

Hear us out: The Roomba s9+ actually isn't the best Roomba at anything anymore, but its combination of suction power and price point leave it a solid contender. Now that it's five years old, the s9+ has received a permanent price drop from $999.99 to $649.99, and it's often seen on sale for $599 (or $499 during Prime Day).

The only Roomba with more intense deep carpet cleaning than the Roomba s9+ is the $1,399.99 Roomba Combo j9+ that just came out in Sept. 2023 (and probably won't be on sale any time soon). Though the slightly older Roomba j7+ is smarter than the s9+ in terms of avoiding small obstacles like cords, the s9+ still beats it in terms of sheer suction power. (If you want numbers, the s9+ cleans with 40 times the suction of 600 Series Roombas while the j7+ offers 10 times the suction.)

Read our full review of the Roomba s9+.