{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11269320","patent":{"patent_number":"US-11269320","title":"Methods and apparatuses for detecting faults in HVAC systems based on load level patterns","assignee":null,"inventors":[],"filing_date":"2017-04-11T00:00:00.000Z","publication_date":"2022-03-08T00:00:00.000Z","cpc_codes":["G05B","G05B","G05B","G05B","G06Q"],"num_claims":19,"abstract":"Methods and systems are described for detecting a wide variety of fault conditions in a HVAC system based on analysis of current and historical energy consumption patterns, and on comparison with energy consumption patterns of other similarly situated RTUs. Energy consumption comparisons are preferably made in regard to a normalized load ratio or NLR or more preferably to a daily maximum normalized load ratio or MDNLR, which provide more robust and reliable bases for comparison of faulty and fault-free RTUs, and hence for generalized fault detection, than other previously known metrics or criteria."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Methods and apparatuses for detecting faults in HVAC systems based on load level patterns","description":"Methods and systems are described for detecting a wide variety of fault conditions in a HVAC system based on analysis of current and historical energy consumption patterns, and on comparison with ener","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11269320","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11269320","citation_suggestion":"Patentable. \"Methods and apparatuses for detecting faults in HVAC systems based on load level patterns\" (US-11269320). https://patentable.app/patents/US-11269320","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11269320","json":"https://patentable.app/api/llm-context/US-11269320","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:27:59.415Z"}