The cabin air filter in a 2021 Honda Accord is located behind the glove box on the passenger side. You access it by opening and lowering the glove box to reach the filter housing, then replace the filter with a new one.
In this article, you’ll learn exactly where to locate the filter, how the housing is accessed, and the step-by-step process to replace it safely and correctly.
Location and access
The filter sits inside a small rectangular housing tucked behind the glove box on the passenger side. To reach it, you typically drop the glove box by releasing its dampers or stopping mechanisms, then look for a removable cover that reveals the cabin air filter inside the housing. The filter’s orientation is important, so note the direction of the arrows on the filter before installation.
What the filter looks like and how to orient it
The cabin air filter is a pleated, rectangular panel. When you remove the old filter, take a quick photo or observe the airflow arrows on the filter to ensure you install the new one with the arrows pointing in the same direction as the intake. Reinstall the cover securely before closing the glove box.
What you’ll need before you start
- Replacement cabin air filter that fits the 2021 Honda Accord (OEM or compatible aftermarket)
- Optional: a small flashlight to improve visibility
- Optional: a basic trim tool or flat-head screwdriver to help release the glove box damper if needed
With the right items ready, you can perform the replacement in just a few minutes.
Step-by-step replacement
Follow these steps to access and replace the cabin air filter in a 2021 Accord.
- Park the car, turn off the engine, and set the parking brake. Open the glove box and empty its contents.
- Gently squeeze the sides of the glove box (or release the dampers) to allow the box to drop down and create access behind it.
- Locate the rectangular filter housing behind the glove box. Press or pry the housing cover tabs to remove the cover and expose the old filter.
- Remove the old cabin air filter. Check its orientation and note the direction of the airflow arrows on the filter.
- Clean the housing if needed with a clean cloth. Insert the new filter in the same orientation as the old one, making sure it seats fully in the housing.
- Reattach the housing cover, lift the glove box back into its up position, and close the glove box. Ensure the damper or stops are properly engaged.
After replacing, turn on the HVAC system to verify air flow and ensure there are no unusual sounds from the glove box area.
Summary
For the 2021 Honda Accord, the cabin air filter sits behind the passenger-side glove box. Access it by dropping the glove box, remove the filter housing cover, replace the old filter with a new one (observing the airflow arrows), and reassemble. This quick maintenance helps keep interior air clean and HVAC performance up to standard.