The iRobot Roomba w155040 is part of iRobot’s newer auto-empty Roomba range, built around the same core principle as the broader Roomba family: the robot does the cleaning, the dock does the emptying, and the bag in the dock holds everything that gets collected. The w155040 cleans autonomously through its schedule or when called, returns to the base station, and the dock’s AutoEmpty cycle pulls the dustbin contents into the bag. That cycle continues until the bag is full. For households that run the robot daily, the bag handles a meaningful load over its service life: fine particles, debris from hard floors, and dust from fabric surfaces all end up inside it.
This set of five bags is made to fit the w155040’s dock without modification. The bags use Plus.Parts® construction, a filtration-grade inner layer and a structured outer shell, so the seal closes cleanly against the dock housing and holds through each emptying cycle. Compared to generic aftermarket bags, the media layer is denser, which means less fine dust escapes the bag’s surface under suction. All five bags come with the same build quality; if your usage runs through them faster, a second pack is straightforward to order.
Our team tests compatibility across iRobot’s product codes and is available to answer questions about which model fits which bag if you are unsure.
In summary
- Long-Lasting Components – Each bag is built for a full fill cycle from first use to replacement, without the seal weakening or the bag media losing its particle-retention performance early.
- Tested and Reviewed – Compatibility checked across the iRobot Roomba w-series range to confirm the bags seat correctly in the AutoEmpty Dock housing.
- Responsive Support – If a bag does not fit or you have a question about your specific dock model, our team responds personally and works to resolve it quickly.
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