🛢️ F15-48 WESTWOOD CLASSIC FELT FILTER – REF # AO25B
The Westwood F15-48 Classic Felt Filter is a premium quality, precision-cut wool felt filter designed for reliable performance in heating oil applications. Known for its economical and time-tested design, this filter fits a variety of canister filter brands, providing consistent filtration and protecting your heating system. It is compatible with biodiesel blends up to B5.
Note: Formerly listed as AO25B.
✅ Key Features
✅ Premium quality precision-cut wool felt for superior filtration
✅ Economical, time-proven classic design
✅ UL Recognized Component
✅ Fits multiple canister filter brands: Westwood F10, F12, F15, F20, F25; General 1A-25A; Unifilter 77; Sid Harvey (Mitco) 264, 264F
✅ Compatible with No. 2 heating oil or lighter
✅ Works with biodiesel blends up to B5
✅ Formerly AO25B, replaces F15-36
📊 Specifications
| Attribute | Detail |
|---|
| Model / Part Number |
F15-48 |
| Reference Number |
AO25B |
| Filter Type |
Classic Felt |
| Material |
Precision-cut wool felt |
| Filter Height |
3-3/8" |
| Filter Width |
2-1/2" |
| Application |
No. 2 heating oil or lighter, compatible with B5 biodiesel |
| Compatible Brands |
Westwood F10–F25, General 1A-25A, Unifilter 77, Sid Harvey (Mitco) 264/264F |
| Replaces |
F15-36 |
| UL Recognized |
Yes |
⚠️ Common Symptoms Indicating Replacement
-
Reduced fuel flow to burner
-
Visible contamination or discoloration in the filter
-
Irregular flame or burner performance
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Accumulated debris in canister filter housing
❓ Frequently Asked Questions
Q: What fuel types is this filter compatible with?
A: No. 2 heating oil or lighter, compatible with biodiesel blends up to B5.
Q: Which brands does this filter fit?
A: Westwood F10–F25, General 1A-25A, Unifilter 77, Sid Harvey (Mitco) 264/264F.
Q: What are the filter dimensions?
A: Height 3-3/8", Width 2-1/2".
Q: What is the filter material?
A: Premium quality precision-cut wool felt.
🛒 Shopping Tips
-
Ensure compatibility with your existing canister filter model before purchasing.
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Replace filter regularly to maintain optimal heating system performance.
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Suitable for use with low-sulfur heating oils and B5 biodiesel blends.
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Use genuine replacement parts for consistent reliability and longevity.
