[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-505770-105":59,"doc-detail-505770-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","2025-compliant-refrigerant-faqs-lennox","2025 Compliant Refrigerant FAQs - Lennox","","FAQ content explains Lennox’s 2025 compliant refrigerant transition, including why specific low-GWP refrigerants are selected and what low GWP means versus CO2. It addresses purchase and servicing constraints tied to EPA technician certification, expected performance and refrigerant charge comparisons with R-410A, and timing of product launches. Technical and safety questions cover A2L refrigerant classification, flammability, vacuum and fitting compatibility, threaded service valve changes, leak-related sensor protocols, and guidance on handling improper refrigerant in a system.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/2025-compliant-refrigerant-faqs-lennox/505770/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/2025-compliant-refrigerant-faqs-lennox/505770.png","ImageObject",300,407,{"name":92,"@type":93},"\tJames","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-08","2026-10-04",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What does low GWP mean in the 2025 compliant refrigerant context?","Question",{"text":112,"@type":113},"Low GWP refers to how much heat a refrigerant traps compared to CO2 over time. Low-GWP refrigerants have much lower values and are presented as a more environmentally friendly choice.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Why did Lennox choose R-454B for whole-home systems and R-32 for mini-split systems?",{"text":117,"@type":113},"Lennox states it selected R-454B for ducted whole-home systems based on performance and zero ozone depletion potential, while selecting R-32 for ductless mini-splits to optimize efficiency and reliability.",{"name":119,"@type":110,"acceptedAnswer":120},"What is A2L refrigerant and how is it different from low GWP?",{"text":121,"@type":113},"ASHRAE uses A2L as a refrigerant classification; “A” indicates non-toxic, “2” indicates flammability level, and “L” indicates low burning velocity. Low GWP refers to global warming potential, so A2L and low GWP are not the same concept.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},505770,1791499302,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":81,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":39,"preview_page_count":4},2336474466412,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","Introduction to 2025 Compliant Refrigerant Resource Guide  \nLennox is updating our product lineup to use 2025 Compliant Refrigerants R-454B for whole-home systems and R-32 for ductless mini-split systems . We are committed to making decisions that keep homeowners, dealers, and the environment in mind.  \nGeneral  \nWhat does low GWP mean?  \nWhy did Lennox choose 2025 Compliant Refrigerant (R-454B and R-32) for their products?  \nCan anyone purchase the new refrigerant?  \nDo low GWP refrigerants perform better than R-410A?  \nWill a 2025 compliant refrigerant system use the same amount of refrigerant as an R-410A system?  \nWhen will this change take place for the Lennox product line-up?  \nGlobal Warming Potential (GWP) refers to a formula used to measure how much a substance contributes to global warming over a period of time. Specifically, it represents how much heat a substance traps when compared to CO2 . Low-GWP refrigerants have much lower GWP values, making them a more environmentally friendly choice.  \nWhen selecting new refrigerants, Lennox considered ease of installation, service, safety, performance, environmental impact and more. For whole-home systems, we chose 2025 Compliant Refrigerant R-454B due to its excellent performance for ducted systems and zero ozone depletion potential. For mini-splits, we selected R-32, designed to optimize efficiency and reliability in ductless systems . Lennox engineers worked to maximize equipment performance with these refrigerants, while minimizing changes to installation requirements .  \nNo. The EPA requires specific certification under Section 608 or Section 609 in order for technicians to purchase refrigerants . Lennox’ BuildATech™ training course offers EPA Section 608 testing. To find out more about the Lennox Learning Solutions courses, visit [LennoxPros.com](LennoxPros.com) under the My Learning tab.  \nLennox’ 2025 Compliant Refrigerants provide comparable performance to R-410A. New low GWP systems will be designed to provide similar levels of comfort, efficiency, and safety as current R-410A systems .  \nWhile there may be some exceptions, most Lennox 2025 Compliant Refrigerant systems will use 5-10% less refrigerant than a comparable R-410A system .  \nIn preparation for the new standards effective January 1, 2025, Lennox will launch our 2025 Compliant Refrigerant products in the second half of 2024. As always, whenever new regulations go into effect, Lennox is here to provide you support, training, and educational resources that make it easy to sell, install, and service the new equipment.  \nTo help drive awareness of 2025 Compliant Refrigerant and designate information regarding these products, Lennox has created an icon that will be easily recognizable in product information and materials .  \n2025 COMPLIANT  \nREFRIGERANT  \nTechnical/Safety  \nWhat is A2L refrigerant?  \nIs A2L the same as low GWP?  \nHow flammable is 2025 compliant refrigerant?  \nIs this class of refrigerants dangerous?  \nDoes the vacuum pump need to be rated with low GWP refrigerants?  \nWill press fittings need tobe different?  \nWill there be a change to the threading on service valves?  \nWhat happens if the wrong refrigerant gets into the system?  \nThe American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) created a subgroup of refrigerants called A2L.“A” refers to non-toxic,“2” refers to the flammability level, and “L”refers to the low burning velocity. You can see this new subgroup compared to other refrigerant classifications in the referenced chart.  \nIncreasing Flammability  \nIncreasing Toxicity  \nA2L refrigerants are not the same as low GWP. The subgroup A2L is the refrigerant classification the HVAC industry is using in the 2025 refrigerant transition . Low GWP refers to the global warming potential of the emissions of the refrigerant.  \nRefrigerants in the A2L class are considered “mildly flammable” but no more dangerous than many other household products . An A2L refrigerant","cbCaips99xmavD2W","https://ap.wps.com/l/cbCaips99xmavD2W","pdf",137510,"English","# General\n## Low GWP and the 2025 compliant refrigerant selection\n## Purchase and service requirements\n## Performance and refrigerant charge comparison\n## Implementation timeline\n\n# Technical/Safety\n## A2L refrigerant basics\n## Safety guidance and equipment compatibility\n## Fittings, threading, and installation implications\n## Wrong-refrigerant scenarios\n\n# Industry/Homeowner Impact\n## Handling existing refrigerants and planning purchases\n## Operating costs and ongoing support","[{\"question\":\"What does low GWP mean in the 2025 compliant refrigerant context?\",\"answer\":\"Low GWP refers to how much heat a refrigerant traps compared to CO2 over time. Low-GWP refrigerants have much lower values and are presented as a more environmentally friendly choice.\"},{\"question\":\"Why did Lennox choose R-454B for whole-home systems and R-32 for mini-split systems?\",\"answer\":\"Lennox states it selected R-454B for ducted whole-home systems based on performance and zero ozone depletion potential, while selecting R-32 for ductless mini-splits to optimize efficiency and reliability.\"},{\"question\":\"What is A2L refrigerant and how is it different from low GWP?\",\"answer\":\"ASHRAE uses A2L as a refrigerant classification; “A” indicates non-toxic, “2” indicates flammability level, and “L” indicates low burning velocity. Low GWP refers to global warming potential, so A2L and low GWP are not the same concept.\"}]","2025 Compliant Refrigerant FAQs - Lennox | PDF",1791154332]