Core Viewpoint - The article highlights the increasing complexity and ambiguity in the after-sales service and warranty responsibilities for home appliances in newly delivered fully-furnished residential properties, particularly in first- and second-tier cities in China. This complexity often leads to disputes between homeowners and developers regarding who is responsible for repairs and maintenance [3][5][8]. Group 1: Issues in After-Sales Service - The after-sales service for heating systems in newly delivered homes often involves multiple parties, including property management, developers, installation companies, and equipment brands, leading to confusion over responsibility [5][9]. - Homeowners frequently encounter difficulties when seeking repairs, as the warranty periods for major appliances like heating systems are typically short, often lasting only two heating or cooling cycles, approximately two years [7][9]. - Complaints regarding after-sales service for heating systems are common, with issues such as delayed repairs and unauthorized charges for service [5][6]. Group 2: Warranty Responsibilities - According to existing regulations, the primary responsibility for warranty issues typically lies with the developer, not the property management or subcontractors [9][10]. - Developers are required to provide warranty coverage for quality issues within the specified warranty period, which is often longer than the warranty period offered by subcontractors [11][12]. - Legal frameworks are increasingly tightening the obligations of developers as the primary responsible party for construction quality, extending their liability beyond the standard warranty period in cases of inherent defects [12].