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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":"2026-09-30 21:17:30.184431+00","research_date":"2026-09-30","source_snapshot_sha256":"f2f2a489db8dfdf44bf70043d21fd05090476df90d93faee054d2233df849d3f","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":20,"qualified_finalists":9,"ranking_unit":"Home warranty company or plan brand"},"schema_version":4,"summary":"American Home Shield ranks first in this 7-platform consensus index of systems-only home warranty plans, named by all seven platforms studied (100.0% share) with an average listed position of 1.29. 2-10 Home Buyers Warranty ranks second (6 of 7 platforms, 85.7%), followed by Liberty Home Guard and Cinch Home Services, each named by 6 platforms. The strongest alternatives for distinct buyer needs are 2-10 for a published $39.99 monthly systems price and a stated $5,000-per-HVAC-system limit, Liberty Home Guard for a dedicated Systems Guard contract with ductwork listed, and Cinch for coverage…","target_buyer":"A homeowner who recently replaced appliances but still has original home systems and wants coverage focused only on those systems.","topic":{"base_category":"Home Warranty and Protection Plans","category_criteria":["systems coverage list","HVAC and electrical payout limits","systems-only plan pricing","exclusions for ductwork or code violations"],"geography":"United States","slug":"best-systems-only-home-warranty-plans-for-hvac-plumbing-and-electrical","title":"Best Systems-Only Home Warranty Plans for HVAC Plumbing and Electrical","use_case":"systems-only coverage plans"}}