Blueair AIR PURIFIER
Classic 503
replacement filter
YOUR FILTER MATCH
Classic 500/600 Series Particle Filter
501PFK
The linked source lists this model. Checked 2026-09-18. Availability and price may change.
- Manufacturer
- Blueair
- Purifier model
- Classic 503
- Replacement guidance
- Check the filter indicator and manual. The source offers six-month subscriptions and states life can reach nine months depending on use.
- Package
- Three particle replacement filters.
Compatibility source
Blueair filter product information ↗
This page reports model-to-filter compatibility. It does not independently test filtration performance or certify third-party alternatives.