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The configured source value 7 is provenance only and must never be described as the number of platforms studied.","The finalrankingtable is the sole authority for rank, platform mentions, platform share, average rank, and best rank. Ignore any conflicting value embedded in a entity evidence bundle.","The Consensus Ranking table must contain exactly one row per finalrankingtable entity, in that order, using that exact entityname. Never split one ranked entity into two product, model, SKU, or product-line rows, and never add another ranking row for a brand already listed. Put recommended products or plans inside that entity's ranked section.","Platform mentions count only ranking-discovery mentions. Do not substitute the number of platforms that later completed a fit assessment.","Citation IDs inside each entity bundle are local to that entity. Consolidate sources by URL using the supplied source catalog.","The URLs were collected from platform responses and were not independently validated by either writer stage.","Each fitreviewurlorplaceholder is the final site-relative CMS path for that entity's review. Link the entity name to that exact path exactly once in its ranked prose section, outside tables and headings. Never replace it with a run ID, report ID, UUID, or local output path.","Use the exact entity-namespaced citation IDs from the source catalog (e.g. e1:); never transfer a citation between entities."],"methodology":{"fit_rating_contract":["strong","good","mixed","weak","uncertain"],"included_valid_platform_count":7,"maximum_finalists":10,"minimum_mentions":2,"name":"Home Services 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":"2026-10-01 02:43:56.40636+00","research_date":"2026-10-01","source_snapshot_sha256":"add71e2aa4498b602e4a5f5d241ed3e4102e938686816308f59b6423ff16e25c","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":31,"qualified_finalists":7,"ranking_unit":"HVAC contractor or company brand"},"schema_version":4,"summary":"DUCTZ is the consensus leader for whole-home air quality and duct cleaning in this 7-platform AI study, named by 5 of 7 platforms (71.4%) at an average listed position of 2.2 and a best position of 1. Stanley Steemer ties on mentions (5 of 7, 71.4%) but ranks second at an average position of 3.2. Green Home Solutions is the strongest alternative for buyers who want duct cleaning bundled with mold assessment, air-quality testing, and whole-home filtration, and it holds the best average listed position in the study (1.67) despite appearing on only 3 platforms. The principal limitation: this…","target_buyer":"A homeowner dealing with allergy, asthma, or air quality concerns who wants professional duct cleaning and indoor air quality equipment installed.","topic":{"base_category":"HVAC Installation and Repair","category_criteria":["duct cleaning thoroughness","IAQ equipment installation expertise","mold and allergen remediation","certification and testing capability"],"geography":"United States","slug":"best-whole-home-air-quality-and-duct-cleaning-specialists","title":"Best Whole Home Air Quality and Duct Cleaning Specialists","use_case":"air quality and duct cleaning"}}