{"citations":{"source_mix":{"company_owned":11,"independent":7,"unclear":0},"sources_referenced_by_questions":0,"support_mix":{"direct":18,"partial":0},"total_sources":18,"unique_domain_count":8},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-10-01","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best HVAC Companies for Boiler and Radiant Heating Installation and Repair","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-10-01","platform_support":["deepseek","kimi"],"predicate":"final_consensus_rank","qualifier":"boiler and radiant heating service","subject":"North Sound Boilers & Radiant","unit":"rank","value":3},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-10-01","platform_support":["deepseek","kimi"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"North Sound Boilers & Radiant","unit":"platforms","value":2},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-10-01","platform_support":["anthropic","grok","kimi","google"],"predicate":"fit_rating_count","qualifier":"strong","subject":"North Sound Boilers & Radiant","unit":"platforms","value":4},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-10-01","platform_support":["openai","deepseek","perplexity"],"predicate":"fit_rating_count","qualifier":"good","subject":"North Sound Boilers & Radiant","unit":"platforms","value":3}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":1.5,"best_rank":1,"entity_id":"entity-001","entity_type":"company","final_rank":3,"name":"North Sound Boilers & Radiant","platform_mentions":2,"platform_share":0.2857142857142857}],"identity":{"dataset_url":"https://homeservicesconsensusindex.com/datasets/hvac-installation-and-repair/boiler-radiant-heating/north-sound-boilers-radiant.json","page_url":"https://homeservicesconsensusindex.com/hvac-installation-and-repair/boiler-radiant-heating/north-sound-boilers-radiant","report_type":"fit_review","study_id":"HSCI-STUDY-15632C9359EC","title":"North Sound Boilers & Radiant Review for Boiler and Radiant Heating Installation and Repair"},"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 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 05:38:26.081586+00","research_date":"2026-10-01","source_snapshot_sha256":"07474b2763bf91954d1101465184df6d9f908553d3039df05ddd3d92fbdee97e","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":40,"qualified_finalists":7,"ranking_unit":"HVAC contractor or company brand"},"schema_version":4,"summary":"North Sound Boilers & Radiant is a good fit for homeowners in the Seattle/Puget Sound region who need boiler, hydronic, or radiant-floor installation, replacement, troubleshooting, or annual maintenance. Two of the seven platforms in this study named the company during the ranking stage, at an average listed rank of 1.5 and a best rank of 1. The strongest reason to consider it is its stated exclusive focus on high-efficiency boilers and radiant systems, including an annual service plan with combustion analysis and heat-exchanger cleaning. The main limitation is that pricing, service-area…","target_buyer":"A homeowner with a boiler-based or radiant heating system, common in older homes, who needs installation, replacement, or repair rather than forced-air service.","topic":{"base_category":"HVAC Installation and Repair","category_criteria":["boiler system expertise","radiant heat installation skill","hydronic system troubleshooting","regional climate experience"],"geography":"United States","slug":"best-hvac-companies-for-boiler-and-radiant-heating-installation-and-repair","title":"Best HVAC Companies for Boiler and Radiant Heating Installation and Repair","use_case":"boiler and radiant heating service"}}