{"citations":{"source_mix":{"company_owned":17,"independent":6,"unclear":4},"sources_referenced_by_questions":0,"support_mix":{"direct":25,"partial":2},"total_sources":27,"unique_domain_count":11},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Window Companies for Historic and Period Properties","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","google","grok","kimi"],"predicate":"final_consensus_rank","qualifier":"historic window replacement","subject":"Heirloom Windows","unit":"rank","value":4},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","google","grok","kimi"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Heirloom Windows","unit":"platforms","value":4},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-10-02","platform_support":["anthropic","grok","google"],"predicate":"fit_rating_count","qualifier":"strong","subject":"Heirloom Windows","unit":"platforms","value":3},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-10-02","platform_support":["openai","perplexity"],"predicate":"fit_rating_count","qualifier":"good","subject":"Heirloom Windows","unit":"platforms","value":2},{"claim_id":"claim-006","confidence":"verified","observed_at":"2026-10-02","platform_support":["deepseek","kimi"],"predicate":"fit_rating_count","qualifier":"uncertain","subject":"Heirloom Windows","unit":"platforms","value":2}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":4.75,"best_rank":3,"entity_id":"entity-001","entity_type":"company","final_rank":4,"name":"Heirloom Windows","platform_mentions":4,"platform_share":0.5714285714285714}],"identity":{"dataset_url":"https://homeimprovementconsensusindex.com/datasets/window-and-door-replacement/historic-window-replacement/heirloom-windows.json","page_url":"https://homeimprovementconsensusindex.com/window-and-door-replacement/historic-window-replacement/heirloom-windows","report_type":"fit_review","study_id":"HICI-STUDY-540D387353A8","title":"Heirloom Windows Review for Historic and Period Properties"},"limitations":["Use the run researchdate as the study date. Platform-reported dates are provenance metadata and do not independently prove freshness.","All included platforms evaluated fit, but platformmentions counts only platforms that named the entity during ranking discovery.","Do not resolve conflicting product names, pricing, or capabilities by guessing; describe the conflict and tell buyers what to verify.","The supplied URLs were collected from platform responses and were not independently validated by the writer stage.","Company-owned citations materially outnumber independent citations; do not describe company claims as independently verified.","Platform-reported research dates differ from the authoritative run date; disclose this as a methodology limitation.","Citations are platform-reported evidence, not independently verified facts. No-search model claims require explicit verification before being described as current facts."],"methodology":{"fit_rating_contract":["strong","good","mixed","weak","uncertain"],"included_valid_platform_count":7,"maximum_finalists":10,"minimum_mentions":2,"name":"Home Improvement Consensus Index cross-platform AI consensus analysis","platforms_included":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"platforms_queried":["openai","anthropic","deepseek","grok","perplexity","kimi","google"],"stages":["ranking_discovery","fit_assessment","normalization","editorial_synthesis"],"version":"alias-table-1"},"provenance":{"generated_at":"2026-10-02 16:32:00.083045+00","research_date":"2026-10-02","source_snapshot_sha256":"3176b981d129e13c8c45ec0997a571adc51675e9f997d28714fe6db690f4c66c","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":32,"qualified_finalists":10,"ranking_unit":"Window and door manufacturer, dealer, or installation company"},"schema_version":4,"summary":"Heirloom Windows is a good fit for historic window replacement when the buyer's priority is preservation-compliant wood sash with historically deep profiles and minimal jamb alteration. Four of seven platforms named Heirloom Windows during the ranking stage (57% of included platform responses), at an average listed rank of 4.75 and a best rank of 3. The strongest reason to consider it is its Accoya wood replica sash combined with thin vacuum insulated glass (VIG), which is designed to preserve original sightlines and existing jambs. The main limitation is verification: pricing, lead times,…","target_buyer":"An owner of a period or conservation-area property needing sightlines and profiles that satisfy preservation requirements.","topic":{"base_category":"Window and Door Replacement","category_criteria":["period profile matching","preservation approval support","restoration alternatives","product range and frame materials","energy performance ratings","installation quality","lead time","price transparency","product and labor warranty","customer review strength"],"geography":"United States","slug":"best-window-companies-for-historic-and-period-properties","title":"Best Window Companies for Historic and Period Properties","use_case":"historic window replacement"}}