Airfire Air Purifier Filter Replacement Guide

Need a replacement filter?

Check your Airfire model and find a compatible filter.

Find recommended replacement intervals, compatible filters, and basic maintenance guidance for the Airfire models listed below. Check the model label on your purifier before ordering.

How Often Should You Replace an Airfire Filter?

Replacement intervals vary by purifier model, daily use, and indoor air conditions. Use the table below to find the recommended interval for your model. Follow your model’s manual for filter construction and cleaning instructions.

Airfire Model	Recommended Replacement Interval
AP202	Every 2–3 months
AP201 / AP203 / AP205 / AP207 / AP209	Every 3–5 months
AP206 / AP309 / AP409	Every 4–6 months
AP301 / AP302 / AP303 / AP304 / AP306 / AP307 / AP407 / AP401 / AP402	Every 6–8 months
AP404 — discontinued large black tower model	Every 6–8 months

These are recommended intervals, not guaranteed filter lifespans. Heavy use, pets, or smoke exposure may require earlier replacement.

Signs That Your Filter May Need Replacement

Reduced airflow compared with normal operation
Persistent odors despite normal operation and maintenance
A filter replacement alert or indicator
Visible buildup that cannot be addressed through the cleaning permitted in your manual

Replacing a worn filter helps maintain airflow and filtration performance. These signs can also have other causes, so check your model’s troubleshooting instructions if the problem continues.

Airfire Filter Compatibility by Model

Match your purifier’s model label to the table below. For the discontinued black tower AP404, also compare your purifier’s appearance with the images on its filter product page.

Your Airfire Purifier	Compatible Replacement Filter
AP201 / AP203 / AP205 / AP207 / AP209	Shop AP201 / AP203 / AP205 / AP207 / AP209 filters →
AP202	Shop AP202 filters →
AP206	Shop AP206 filters →
AP301 / AP302	Shop AP301 / AP302 filters →
AP303 / AP304 / AP306 / AP307 / AP407	Shop AP303 / AP304 / AP306 / AP307 / AP407 filters →
AP309 / AP409	Shop AP309 / AP409 filters →
AP401 / AP402	Shop AP401 / AP402 filters →
AP404 — discontinued large black tower model	Shop filters for the black tower AP404 →

Not sure which model you own? Use our filter finder, or email support@airfirestore.com with a photo of your purifier and its model label before ordering.

How to Replace an Airfire Filter

Turn off and unplug the purifier.
Open the filter compartment as directed in your model’s manual.
Remove the old filter and dispose of it according to local guidance.
Remove all plastic packaging from the new filter.
Install the compatible replacement filter and securely close the compartment.
Reconnect power and reset the filter indicator if your model requires it.

Compartment access and reset steps vary by model. See the user manual for your purifier for specific instructions.

Airfire Filter Replacement FAQ

Can I wash an Airfire HEPA filter?

Do not wash the HEPA filter with water. Some models have a separately maintained pre-filter; follow your model’s manual to check whether it can be cleaned or washed.

Can I choose a filter based on its appearance alone?

No. Similar-looking filters may differ in dimensions, fit, or sealing. Confirm that your purifier’s exact model is listed on the filter product page. For the discontinued black tower AP404, check both the model label and purifier appearance.

Will a new filter improve purification performance?

Replacing a worn or clogged filter can help restore airflow and filtration performance. Results depend on the purifier model, room conditions, pollution sources, and operating time.

How do I reset the filter replacement indicator?

Reset instructions vary by model. Follow your purifier’s user manual rather than using a reset sequence intended for another model.

What if airflow remains weak after replacing the filter?

Check that all plastic packaging has been removed, the filter is correctly installed, the compartment is closed, and the air inlets and outlets are unobstructed. If the problem continues, contact Airfire support.