Filter Fit FinderGermGuardian · air purifier
GermGuardian AC4010 replacement filter
Use part FLT4010. Replace every 6-8 months depending on use.
The filter that fits
Maker lists this modelGermGuardian Filter A
GermGuardian FLT4010 HEPA PURE Air Purifier Filter A
- Part number
- FLT4010
- How many
- 1 per unit
- How often
- Replace every 6-8 months depending on use
Opens an Amazon search for GermGuardian Filter A FLT4010. Check the listing says FLT4010.
Does your exact model share this filter?
GermGuardian labels several versions of the AC4010. Check the label on your unit.
- AC4010 takes FLT4010
- AC4020 same filter
Look-alike models that take a different filter
The AC4100 takes Filter E (FLT4100) and the AC4825 takes Filter B (FLT4825).
Sources
High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.
- Which filter fits guardiantechnologies.com Maker's own page checked Oct 1, 2026
Replacement filter for GermGuardian Air Purifier Models AC4010 & AC4020 and Black+Decker BXAP040
- How many guardiantechnologies.com Maker's own page checked Oct 1, 2026
Only one single combination filter needs to be replaced every 6-8 months depending on the use of the product.