iRobot Roomba 105 Vac: problems, parts and running costs
Checked: 2026-10-05
Summary
What owners and reviewers report going wrong on the 105 Vac is mostly navigation and software, not the vacuum itself: it has no object recognition, so cords, socks and rug transitions cause trouble, and app setup draws repeated complaints. What it does well for the money is hard-floor and pet-hair pickup, especially run often against the AutoEmpty dock. Keeping one running costs filters, brush cleaning and, on the self-emptying version, dust bags, and no source prices any of those parts or a year of power, so treat the yearly figure as unknown. It is the right pick for a hard-floor home that wants LiDAR room mapping and no mop, and the wrong pick for rooms full of cords, toys and difficult rugs.
Common problems and fixes
- No object avoidance — the 105 Vac has no active object recognition and no vision camera, so cords, socks and small obstacles on the floor get run over or pushed around. The fix is preparation, not repair: pick those up before each run. This is a design limitation, and the sources do not state the warranty duration for the current platform, so check the terms that ship with the unit. [3][5]
- Rug transitions and clutter break up the route — owners report navigation problems at rug edges and in cluttered rooms for the same reason: there is no camera to recognise an obstacle and step over it. Clear the floor first, then use room targeting and no-go zones to keep runs out of the trouble spots. [3][5]
- Wi-Fi and app setup friction — some owners describe pairing and the Roomba Home app as frustrating and criticise the software usability overall. Budget time for setup and app map building before the first clean, and expect software complaints to persist rather than clear after an update; nothing in the sources suggests a hardware fault behind them. [4][5]
- Hair wraps onto the brush — owners with shedding dogs say the 105 with AutoEmpty collects substantial hair when run frequently, but that routine brush cleaning is needed at the ends. Pull hair and debris off the main brush and edge brush on a schedule, not just when a run looks bad, and empty the bin between passes. [4]
- Dust bags on the AutoEmpty versions only — the self-emptying configurations add an ongoing consumable that the plain charging-base version does not have. Bag pricing is listed as an open question in the research, so cost it from an iRobot bag listing before buying the bundle. [1]
- Long-term reliability is unproven — the model launched in 2025, so there is no mature failure-rate data for the LiDAR unit, wheels, battery or dock hardware. Treat early faults under whatever terms come with the unit rather than assuming a known weak part. [1][3]
- Listings blur the 105 Vac and the 105 Combo — current iRobot product URLs mix vacuum-only and mop-pad content, which makes specification blocks and dock contents hard to confirm. Check which dock a given listing includes before ordering, and treat copied specification tables with care. [1][2]
Parts and consumables
- Filter — iRobot documents periodic filter replacement as routine maintenance across the current 105 platform. No part number, interval or price for the filter appears in the sources. [2]
- Dust bags for the AutoEmpty dock — only the AutoEmpty configuration uses them; the plain charging-base version does not. Bag prices are not published in the sources, and that gap is named as an unanswered question, so the running cost of the self-emptying version cannot be calculated from what is documented. [1]
- Bristle main brush and edge brush — the 105 Vac’s cleaning system is a bristle main brush plus an edge brush, and pet owners report pulling hair off them routinely. No replacement part numbers or prices appear in the sources. [2][3]
Yearly running cost
Not enough data. No source gives a filter price, a dust-bag price, an electricity figure, an owner-paid total or a usage rate, so no yearly number can be derived. What the evidence does support: every unit needs filter replacement and brush cleaning, only the AutoEmpty version adds bag costs, and there is nothing else to buy because the 105 Vac is vacuum-only with no mop pad and no subscription documented. Price the bag and filter set yourself and add your own power cost before treating any total as real.
When it is a good buy
No source gives a non-Amazon street price for either configuration, so no price threshold can be stated here; the research lists exact current pricing as an open question. What the evidence supports instead: the 105 Vac is the sensible choice for a hard-floor or mixed-floor home that wants LiDAR room mapping, room and zone targeting, no-go zones and no mop. Check these before buying:
- Cluttered rooms or homes with difficult rugs — pick a robot with real obstacle avoidance instead. The sources make this recommendation repeatedly but name no specific model to compare against, so judge candidates on their own published avoidance claims.
- Homes with heavy-shedding pets — the 105 Vac with AutoEmpty fits, since owners report substantial hair pickup when it runs frequently. Budget for bags, whose price is not documented.
- If you also want mopping — the Roomba 105 Combo is the same platform with a mop pad added, so compare it directly; the sources treat it as a separate machine from this one.
- The 205 DustCompactor family — named in the sources only as a different iRobot family, with no detail collected, so check its specification before treating it as a substitute.