Is the Roomba Worth Buying Used in 2026?

Is the Roomba Worth Buying Used in 2026?

The data is hard to ignore: Roomba search interest is down 90% year on year. "Roomba" and "robot Roomba" are two of the steepest declining search terms in the UK robot vacuum market. The iRobot brand that defined the category has had a difficult three years — acquisition attempts, significant layoffs, and the withdrawal of some newer model launches.

But here is the other side of that data: used Roomba prices have also fallen sharply. The iRobot Roomba j7+ — still one of the best obstacle avoidance machines available — trades at £340–£430 used today, against a retail price of £549. That is a 30–38% saving on a machine that scored 8.7 out of 10 in our bench test.

So: is a used Roomba worth buying in 2026? The answer depends on which Roomba, and what you need it for.

What is actually declining — the brand or the hardware?

The 90% search decline is a brand signal, not a hardware signal. The physical machines sold between 2021 and 2023 have not changed. A Roomba j7+ manufactured in 2022 still has the same PrecisionVision camera, the same Clean Base dock, and the same iRobot app — all of which continue to receive firmware updates.

What has changed:

• iRobot's corporate situation (acquisition uncertainty has created uncertainty about long-term support)
• Competitive pressure from Dreame, Ecovacs, Roborock, and Xiaomi who have closed the performance gap at equal or lower prices
• The withdrawal of some model launches (the Roomba Combo j9+ and some newer series) from active UK marketing

What has not changed:

• The j7+'s PrecisionVision obstacle avoidance — still the benchmark for pet household avoidance of pet waste, cables, and toys
• iRobot's firmware update cadence for existing models (the j7+ received updates as recently as Q2 2026)
• The Clean Base self-empty dock functionality

The hardware you buy used is the hardware from the pre-decline period. You are not buying the current brand trajectory.

The Roomba j7+: the strongest used buy

The Roomba j7+ is the most bench-tested robot vacuum on the Robot AutoTrader platform and still our recommended pick for one specific household type: pet owners, particularly those with cats or dogs who may leave waste on the floor.

iRobot's PrecisionVision camera system — which uses overhead cameras and on-device AI to identify and avoid pet waste, cables, socks, and toys — remains the most refined implementation in the consumer robot vacuum category. Competing models have added obstacle avoidance, but none match the j7+'s category-specific training data or the precision of its camera array.

Used price: £340–£430 with Clean Base dock. Without the Clean Base dock, the unit is worth £100–£130 less — the dock is a third of the product's value.

Best months to buy: August–September when spring upgrade cycles push used supply to its annual peak.

Our bench score: 8.7 / 10 — read the full bench test.

Where the Roomba loses ground in 2026

If your home has significant hard floor area and you want mopping as well as vacuuming, the Roomba j7+ is not your machine. It is vacuum-only — no mop function, no wet cleaning capability. The Roborock S8 Pro Ultra and Dreame L20 Ultra both offer autonomous vacuum-and-mop systems in the same used price band with full mop docks.

If your home is mainly carpet and you do not have pets, the Xiaomi S20 Pro at £240–£360 used offers comparable vacuuming performance to the j7+ at a significantly lower price.

If you want the most current obstacle avoidance — including 3D structured light rather than camera-based detection — the Ecovacs Deebot T30S Combo at £380–£530 used has closed the gap meaningfully.

Which Roombas to avoid used

Not all Roombas are equal in the used market. Avoid:

• 700, 800, 900 series: Older navigation, no self-empty dock, no app integration worth using. These are inexpensive (£80–£120) but functionally limited for modern use.
• i3, i4, e5: i-series models without PrecisionVision. They navigate well but lack obstacle avoidance. Fine for a clean, simple home — poor value against the j7+ at the current used price differential.
• s9+: Roomba's attempt at a high-end model (D-shaped for corners). Retail was £1,099 — used prices are now £400–£550. The corner cleaning advantage is modest; the j7+ is a better overall machine at a lower used price.

Buy: j7+, j9+, or j9 for the current generation with PrecisionVision and a self-empty dock.

iRobot's software support situation

This is the one legitimate concern with a used Roomba purchase in 2026. iRobot's corporate difficulties have raised questions about long-term software support. As of September 2026, the iRobot app continues to function and the j7+ is receiving firmware updates.

The practical risk: if iRobot eventually discontinues cloud infrastructure for older models, scheduled cleaning and remote control via the app would stop working. The robot would still clean in manual mode.

For a used purchase at £380, this is a manageable risk — you are paying used market price for a machine that may have a finite remaining support window. If lifetime software support is essential to your purchase decision, the Roborock S8 Pro Ultra is the safer long-term bet given Roborock's stronger current corporate position.

The verdict

A used Roomba j7+ at £340–£430 is worth buying in 2026 for:

• Pet households where obstacle avoidance of pet waste is a priority
• Buyers with mainly carpet who want a proven vacuum-only machine at the lower end of the used flagship price range
• Budget-conscious buyers who want the best obstacle avoidance available under £400

It is not the right pick for:

• Hard floors needing mopping — the Roborock S8 Pro Ultra or Dreame L20 Ultra are better
• Buyers who want the latest technology — the Ecovacs T30S Combo and Dreame L20 Ultra represent more current hardware
• Buyers worried about long-term support — choose Roborock for the strongest corporate stability

The brand's search decline has created a buyer's opportunity. The hardware hasn't changed. The price has fallen. For the right household, a used Roomba j7+ is one of the best-value robot vacuum purchases on the UK used market right now.

Resale price data updated September 2026 from the Robot Resale Index. Bench test scores based on verified testing across multiple units. See full bench test for methodology.