Is your Roomba j9+ not performing like it used to? A dirty filter could be the culprit. Regularly changing the filter on your Roomba j9+ is essential for maintaining its cleaning performance and ensuring a healthy home environment. A clean filter traps dust, dirt, and allergens, preventing them from recirculating into the air. This guide will walk you through the simple steps to replace the filter, keep your Roomba running smoothly, and your home clean.
1. What You’ll Need
- A new Roomba j9+ filter. Be sure to purchase the correct “Combo” filter, as it’s a slightly different size than non-Combo filters.
- A trash container.
- (Optional) A small brush or vacuum cleaner for cleaning the filter compartment.
2. Preparation Steps
- Turn off your Roomba: To ensure safety, it’s recommended to turn off your Roomba before performing any maintenance.
- Gather your supplies: Have your new filter and a trash container ready.
- Find a suitable workspace: Choose a well-lit area where you can comfortably work.
3. Step-by-Step Guide to Changing the Filter
- Remove the Dust Bin: Locate the bin release button on the back of your Roomba j9+ and press it to release the dust bin. The button usually has a bin icon on it.
- Locate the Filter: With the dust bin removed, you’ll see the filter on the left side of the bin. There’s usually a tab to help you grip it.
- Remove the Old Filter: Gently grasp the filter by the tab and pull it out of the bin.
- Dispose of the Old Filter: Discard the used filter into your trash container. Used filters can be full of allergens and dust, so dispose of it carefully.
- Clean the Filter Compartment (Optional): Use a small brush or vacuum cleaner to remove any accumulated dust or debris from the filter compartment inside the dust bin. This will help ensure a good seal with the new filter.
- Insert the New Filter: Take your new Roomba j9+ filter and align it with the compartment. There are usually indentations on the top and bottom to ensure it fits correctly. Push the filter in until it snaps or sits snugly in place.
- Reinstall the Dust Bin: Slide the dust bin back into the Roomba until you hear it click into place. Make sure it’s securely fastened.
4. Pro Tips for Filter Maintenance

* Clean the Filter Regularly: Even if you replace the filter every two months, cleaning it every few weeks can extend its life and maintain performance. Gently tap the filter against a trash can to remove loose debris. You can also use a vacuum cleaner to carefully remove dust.
* Don’t Wash the Filter: Roomba filters are not designed to be washed. Washing can damage the filter material and reduce its effectiveness.
* Check Filter Condition: Regularly inspect the filter for any signs of damage or excessive buildup. If the filter is torn or heavily soiled, replace it immediately.
* Consider Aftermarket Filters: While iRobot recommends using genuine Roomba filters, many high-quality aftermarket options are available. Just be sure to choose a filter specifically designed for the Roomba j9+ Combo to ensure proper fit and performance.
5. Troubleshooting Guide

- Filter Doesn’t Fit: Ensure you have the correct “Combo” filter for the Roomba j9+. Non-Combo filters are a different size.
- Roomba Not Picking Up Debris: A clogged filter can reduce suction power. Replace the filter to restore optimal performance. Also, check the brushes and beater bar for any obstructions.
- Red Light Indicator: A red light on your Roomba or Clean Base could indicate several issues, including a missing filter bag, full bag, or improperly installed components.
- Filter Gets Dirty Quickly: If you have pets or live in a dusty environment, you may need to replace the filter more frequently.
- Roomba Smells Bad: A dirty filter can trap odors. Replacing the filter can help eliminate unpleasant smells.
6. FAQ
How often should I change the filter on my Roomba j9+?
It’s generally recommended to replace the filter every two months, but this can vary depending on your cleaning frequency, the presence of pets, and the amount of dust in your home. If you notice a decrease in cleaning performance, it’s a good idea to replace the filter sooner.
Can I wash the Roomba j9+ filter to extend its life?
No, Roomba filters are not designed to be washed. Washing can damage the filter material and reduce its ability to trap dust and allergens. It’s best to replace the filter when it’s dirty.
Where can I purchase replacement filters for my Roomba j9+?
You can purchase replacement filters from the iRobot website, authorized retailers, and online marketplaces like Amazon. Be sure to buy the “Combo” filter that is compatible with the j9+ model.
How do I know if my Roomba filter needs to be replaced?
If you notice a decrease in your Roomba’s suction power, or if the filter appears visibly dirty or damaged, it’s time to replace it. Also, the iRobot app may remind you when it’s time to replace the filter.
Are aftermarket filters as good as iRobot’s official filters?
Many high-quality aftermarket filters are available that can perform just as well as the official iRobot filters. Be sure to read reviews and choose a filter specifically designed for the Roomba j9+ to ensure proper fit and performance.
What type of filter does the Roomba j9+ use?
The Roomba j9+ uses a high-efficiency filter, sometimes referred to as a HEPA-style filter, made of non-woven polymer material. This filter is designed to capture microscopic particles like dust, dirt, pet dander, and allergens.
7. Tips, Warnings, and Best Practices
- Always use the correct type of filter for your Roomba j9+ model. Using the wrong filter can damage the vacuum or reduce its performance.
- When cleaning the filter compartment, be gentle to avoid damaging any internal components.
- Consider purchasing a multi-pack of filters to save money and ensure you always have a replacement on hand.
- If you have allergies or sensitivities, replacing the filter more frequently can help improve indoor air quality.
- Monitor your Roomba’s performance after replacing the filter to ensure it’s operating correctly.
Conclusion
Changing the filter on your Roomba j9+ is a simple yet crucial maintenance task that ensures optimal cleaning performance and helps maintain a healthy home environment. By following these steps and tips, you can easily keep your Roomba running smoothly and enjoy consistently clean floors.
Now that you know how to change the filter, take the next step and order a new filter for your Roomba j9+ to keep your home clean and fresh.

