Honeywell HPA120 replacement filter
Checked against Honeywell’s official page on · US model
✓ This is the filter you need
Honeywell O Filter (3-in-1 HEPA)
Filter
O Filter
Part number
HRFO1 · 1 filter
Filters needed
1 at a time
Replace
Every 9–12 months
3-in-1 HEPA
Find O Filter on Amazon
Match the genuine part number shown above before you buy. Paid link.
Your purifier
Honeywell HPA120Match the model on the label exactly — similar names can use different filters.
Why we’re sure
“Compatible with: HPA120 & HPA125 Allergen Plus Tabletop Air Purifier Models”
- Source
- Replacement 3-in-1 HEPA Air Purifier O Filter, HRFO1
- Type
- Manufacturer filter page · honeywellpluggedin.com
- Where
- Product details – “Compatible with”
- Checked
More evidence (part numbers, quantity, interval)
Part number HRFO1
“Replacement 3-in-1 HEPA Air Purifier O Filter, HRFO1 … In the Box: 1 3-in-1 O HEPA Filter”
- Source
- Replacement 3-in-1 HEPA Air Purifier O Filter, HRFO1
- Type
- Manufacturer filter page · honeywellpluggedin.com
- Where
- Page title and "In the Box"
- Checked
How many filters
“HPA120 Required Filters: 1 O HEPA Filter”
- Source
- Allergen Plus HEPA Tabletop – Find My Filter
- Type
- Manufacturer compatibility chart · honeywellpluggedin.com
- Where
- Find My Filter – required filters per model
- Checked
Replacement interval
“Replace every 9 to 12 months”
- Source
- Replacement 3-in-1 HEPA Air Purifier O Filter, HRFO1
- Type
- Manufacturer filter page · honeywellpluggedin.com
- Where
- Product description
- Checked