Search·Austin Air
When you already know your purifier’s model number, this page shows the replacement filter numbers we match to it—then you can compare with your old filter and shop.
Brand
Austin Air
Model HM400
Austin Air HealthMate HM400 Air Purifier
Series: HealthMate
These filter part numbers are matched to this air purifier model in our reference. Compare the OEM number with the label on your current filter or your owner’s manual before you buy.
Your replacement
FR400
Austin Air HealthMate replacement filter (standard blend)
Replace about every 12 months
All details for this part (notes, compatible models, buying options when listed)
Notes & next steps
Search again if you need a different model or part number.
Standard HealthMate tower family; confirm stamped model before ordering filter blend.