iRobot Roomba 115X Combo Review

The Roomba 115X Combo is the cheapest self-emptying machine on this site, and it arrives with something this site has complained about for months: a published suction figure. iRobot states 15,000 Pa and a dock rated at 90 days, which is a longer interval and a lower price than its own 105 with AutoEmpty. If you wanted a Roomba that empties itself and could not justify what the 105 dock costs, this is the machine. The caution is that the headline number is brand new from a brand that has never printed one, and you cannot check it against anything else iRobot sells.

#	Product	Best for	Score	Price
01	iRobot Roomba 115X ComboThe first iRobot we rank that prints a Pascal figure, with a 90-day dock, for less than its own older 105 line. The number is new enough that it deserves scepticism, and the dock price is not in doubt.	Cheapest self-emptying machine here	7.9out of 10	$199.99 - View on Amazon $469.9957% off #ad Price last verified October 3, 2026. How we are funded

Scores come from the published rubric on How We Pick: suction 25%, navigation 25%, pet hair 20%, running cost 20%, setup 10%. Editorial judgments about published specifications, not test results.

This matters beyond one listing. The single most-repeated criticism on this site is that a brand which will not print a number cannot be ranked against brands that do. iRobot has now printed one on its new machines, which removes that objection for those models and leaves it standing for the rest of the range.

Suction: 15,000 Pa. That is the highest published figure of any machine we rank - above the Lefant M3's 12,000 Pa and well above the 10,000 Pa Roborock prints. Three honest qualifications. Pascal ratings have no shared test standard between manufacturers, so this is not a measurement you can hold against a rival's number with any confidence, and we explain why on Pa suction explained. It is a brand-new claim from a brand with no track record of making it. And it cannot be compared backwards against iRobot's own 105 line, because those machines still publish a ratio rather than a figure.

The dock: 90 days, 2.5 liters, and a bag that seals itself. This is the strongest part of the machine and the least ambiguous. iRobot states up to 90 days between bag changes, which is longer than the 75 days it claims for the 105 AutoEmpty and longer than the 7-to-9 weeks Roborock states for the Q7 M5+. The AllergenLock bag is stated to trap 99% of pollen and mold and to seal as you remove it, which is the specific thing that matters in a dust-sensitive household - emptying is when a bin releases its contents back into the room. The general argument is on is a self-emptying dock worth it.

Navigation: ClearView LiDAR, with an obstacle claim attached. The mapping is the same family as the rest of the 100 series - laser, neat rows, works in low light. What is new in the wording is that iRobot now states the machine steers around shoes, pet bowls and furniture. That is an obstacle-avoidance claim rather than a mapping claim, and the distinction is one we labor on obstacle avoidance, because LiDAR alone does not see a sock.

Anti-hair-wrap brushes. Another first for a Roomba on this site. iRobot has never made an anti-tangle claim for the 105 line, and that gap is the single biggest reason we have pointed pet owners at Roborock. The claim here is less specific than Roborock's - iRobot does not say whether the side brush is covered, and the side brush is where long hair wraps worst - but it is a claim where there used to be silence. See best for pet hair for why that distinction decides things.

Mopping: a washable pad, not a pump. This is where the cheaper price shows. The pad is microfiber, there is a SmartScrub mode stated at "2x deeper", and three water levels - but it is a pad dragged across the floor, not the micro-pump metering water on the 105 Combo or a vibrating plate. It also does not lift, so rugs need a No Mop Zone drawn around them in the app rather than being detected and avoided automatically.

Coverage: 900 sq ft per charge. Modest, and the number to pay attention to if your home is large. Recharge-and-resume is not stated on this listing the way it is for the 105 line, which matters more than the suction figure for anybody over about 1,200 square feet - see best for large homes.

Strip out the new number and this is still the most interesting machine iRobot sells at this price, because a 90-day self-emptying dock has not been available this cheap before on this site. The Tikom L8000 Plus has held the cheapest-dock position for months and this undercuts it, from a brand with far better app support and parts availability.

There is also a version without the dock at a lower price. If the dock is not the reason you are here, that variant exists - but the dock is the reason this machine is interesting, and buying the dockless one puts you back among a crowded field of mapping machines where the 15,000 Pa claim is doing all the work.

Partly, and here is the honest shape of it. A published figure is better than no figure, because it is a claim the manufacturer has committed to in writing and can be held to. That is a real improvement over "70x more power-lifting suction", which is a comparison to a machine from around 2012 and cannot be checked by anybody.

But a Pascal rating is a measurement each brand takes its own way, and a number arriving suddenly at the top of the category from a brand that has spent years saying such numbers are meaningless deserves to be read with one eyebrow raised. We have not measured it and we are not going to pretend otherwise. What we will say is that we would not buy this machine because of the 15,000 Pa - we would buy it because of the dock and the price, and treat the suction figure as a welcome change in disclosure rather than as a proven capability.

• You want the longest dock interval for the least money: the 115X. 90 days against 75, at a lower price, and it mops as well.
• Somebody in the house has a dust allergy: look closely at both. The 105 AutoEmpty publishes a 0.7-micron filtration figure; the 115X states 99% of pollen and mold without a micron number. The finer published figure is on the older machine.
• You want the most mature, most-tested version of iRobot's software: the 105 line has been out longer. The 115X is new enough that there is no track record at all.

Against the rest of the field, the comparison that matters is Roborock vs Roomba - and this machine changes that page's arithmetic for the first time, because iRobot is no longer conceding the specification argument by default.

Somebody with a small-to-medium home who wants to stop emptying a bin, wants iRobot's app and parts availability, and does not want to pay what iRobot's older dock machine costs. On that description this is the best-value Roomba on this site, and the first one in a while that is genuinely interesting rather than merely competent.

It is not the machine for a large floor plan, for a home that is mostly carpet where you need the mop to stay away on its own, or for a buyer who wants a long track record before spending money. On all three of those, something older is the safer purchase.

We have not handled this machine. Everything above is read from published specifications and the manufacturer's own documentation, cited below. These are the specific claims we could not check:

• The 15,000 Pa figure. We have not measured it, Pascal ratings have no shared test standard between brands, and this is the first machine from this manufacturer to carry one.
• How 15,000 Pa relates to iRobot's older '70x power-lifting suction' language. The two cannot be converted into each other and iRobot does not bridge them.
• The 90-day dock interval, and how much it shortens in a home with pets or heavy carpet.
• The AllergenLock bag's '99% of pollen and mold' claim. No micron figure is published for this model, unlike the 0.7-micron claim on the 105 AutoEmpty.
• The anti-hair-wrap claim, and specifically whether it covers the side brush as well as the main brush. The listing does not say.
• What SmartScrub's '2x deeper' is measured against. iRobot does not state the comparison.
• Whether recharge-and-resume is supported. It is stated for the 105 line and does not appear on this listing.
• The height of the machine. iRobot publishes no height figure, so we cannot tell you whether it fits under your furniture.
• Noise. No decibel figure is published, by iRobot or by anyone else in this price range.
• Long-term reliability. This is a new model with no track record.

That list is not a disclaimer bolted on at the end. It is the actual scope of this review, and anywhere a competitor's confident phrasing implies they checked these things without saying how, it is worth asking the same question of them.