SpareSignal
SpareSignal is an evidence-based aftermarket replacement intelligence project. It separates official compatibility evidence from marketplace seller claims, part-number confusion, and noisy replacement listings.
The current public test cluster focuses on Dyson TP04 replacement filter evidence, part numbers, marketplace signals, and misfit-risk boundaries.
Current research cluster
The TP04 cluster does not sell filters and does not make third-party purchase recommendations. It documents official Dyson evidence, marketplace signals, unresolved part-number relationships, and model confusion risks.
Evidence boundary
Official manufacturer pages, official parts pages, and verified official sources are treated separately from marketplace listings. Seller titles, retail search results, review snippets, and unavailable listings are market signals only unless independently supported by official or high-trust evidence.
This distinction matters because replacement filter listings often mix multiple Dyson models and part numbers in the same title. A marketplace claim is not the same as confirmed compatibility.
Current TP04 findings
- Official evidence supports TP04 compatibility for 965432-01.
- Official evidence supports TP04 compatibility for 969048-05.
- The relationship between 965432-01 and 969048-05 remains unresolved in the current workbook.
- 969048-01 and 970341-01 remain marketplace-mentioned or unverified for TP04 in the current evidence set.
- Marketplace listings frequently use broad TP04 / TP07 / HP04 / DP04 compatibility language.
What SpareSignal is not
SpareSignal is not a store, not a supplier, and not a product-quality verifier. It does not handle inventory, fulfillment, returns, or warranty claims.
For air purifier filters, always check your exact machine model, region, part number, and official manufacturer instructions before relying on any replacement filter.