The Tefal Silence Force 4A Animal Care TW6451 is a quiet-running cylinder vacuum carrying a 4A allergen classification, purpose-built for households with pets. The Silence Force line is engineered for low noise operation, making the TW6451 practical to run at any time of day. The 4A allergen class is the highest bag-level certification in the European allergen-containment scale, covering fine dust, dander, and sub-micron particles. Maintaining that classification requires the bag to remain undamaged and seated correctly at the collar. The Animal Care specification adds a motorised brush attachment for embedded pet hair on soft furnishings, which generates a higher fine-particle load per session than standard cleaning.
This set of six Plus.Parts® spare bags is built for the Tefal Silence Force 4A Animal Care TW6451. Each bag uses a multi-layer fleece wall suited to the machine’s airflow profile, trapping fine particles and pet dander at the bag wall rather than passing them to the exhaust. The sealed collar fits the TW6451 intake directly, maintaining the closed system the 4A rating requires. Six bags provides a comfortable reserve for a pet-hair household’s higher replacement rate.
We selected these bags after verifying the fit and fleece specification against the TW6451. Any question about the 4A rating, the Animal Care specification, or the fit for a specific TW6451 variant goes to the team and gets a direct answer.
Key highlights
- Built to Last – Fleece wall construction maintains the filtration performance the 4A allergen classification depends on, through the full fill cycle.
- Premium Materials – Fleece media density selected for the TW6451 airflow rate: fine particles and pet dander are retained at the bag wall, not the motor.
- Recommended by Our Team – Our team has the TW6451 specification and can answer questions about the 4A classification, variant fit, or anything about the order.





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