FitCheckrReplacement comparison
HRF-R3 vs Core 400S-RF
Honeywell HRF-R3 and Levoit Core 400S-RF serve different air purifier designs and cannot be substituted.
Pack contents
HRF-R3: 12 mo
Core 400S-RF: 12 mo
Official product image references
Use the manufacturer reference images to identify the two parts before comparing model support and usage.
Which replacement should you use?
Honeywell HRF-R3 True HEPA Replacement Filter Pack
Honeywell HPA300 owners replacing the three R-format HEPA filters.
Check compatible modelsLevoit Core 400S-RF Replacement Filter
Levoit Core 400S owners replacing the cylindrical Core 400S filter.
Check compatible modelsRisk summary
Pack count and shape matter. A flat panel HEPA pack and a cylindrical purifier filter are different fit systems.
Main difference between HRF-R3 and Core 400S-RF
Which one fits which models
Use HRF-R3 for the model family described on its replacement page. Use Core 400S-RFonly when your device model or manual explicitly lists that part number.
Buyer mistake warning
Do not substitute by shape alone. The most important difference to check here is pack contents.
When to choose HRF-R3
Honeywell HPA300 owners replacing the three R-format HEPA filters.
When to choose Core 400S-RF
Levoit Core 400S owners replacing the cylindrical Core 400S filter.
Frequently asked questions
Are HRF-R3 and Core 400S-RF interchangeable?
Honeywell HRF-R3 and Levoit Core 400S-RF serve different air purifier designs and cannot be substituted.
What is the main difference between HRF-R3 and Core 400S-RF?
The main difference to verify is pack contents. Pack count and shape matter. A flat panel HEPA pack and a cylindrical purifier filter are different fit systems.
When should I choose HRF-R3?
Honeywell HPA300 owners replacing the three R-format HEPA filters.
When should I choose Core 400S-RF?
Levoit Core 400S owners replacing the cylindrical Core 400S filter.
Can I rely on part photos alone?
No. Part photos help identify packaging and shape, but compatibility should be confirmed by exact model support, part number, replacement type, and manufacturer references.
Official reference pages
Use these manufacturer pages to inspect current part photos, packaging, and model language. FitCheckr's comparison notes summarize fit risk, but the official pages should be used to confirm current part details before choosing a replacement.
| Fit signal | HRF-R3 | Core 400S-RF |
|---|---|---|
| Brand family | Honeywell | Levoit |
| Replacement type | HEPA filter pack | HEPA filter |
| OEM status | oem | oem |
| Replacement interval | About every 12 months | Every 6-12 months depending on usage |