暖气明明热乎乎，家里为啥还得穿棉袄？

Core Viewpoint - The article highlights the ongoing heating issues faced by residents in older buildings in Beijing, particularly after a recent snowfall, indicating that despite various attempts to improve heating, many homes remain inadequately warm during winter months [2][6]. Group 1: Heating Issues in Specific Buildings - Residents of Anhua Xili No. 31 Building report indoor temperatures as low as 15°C, despite having replaced windows and radiators, indicating a long-standing heating problem [3][5]. - Wang, a resident in the same building, mentions that the temperature in her home often drops to 16°C at night, and despite some improvements over the years, the heating remains insufficient [5][6]. - In the Dongzhili East District No. 10 Building, residents experience similar issues, with indoor temperatures sometimes falling to 15°C, even when the radiators are hot to the touch [7][8]. Group 2: Causes of Heating Problems - The lack of external wall insulation and aging heating pipes are identified as primary reasons for inadequate heating in these buildings [6][9]. - Residents have expressed frustration over the complex ownership structure of their buildings, which complicates efforts to implement necessary renovations for improved heating [6][9]. - Despite attempts by heating companies to adjust supply methods, residents still report fluctuating temperatures and overall dissatisfaction with heating performance [8][9]. Group 3: Resident Responses and Adaptations - Many residents resort to using additional heating sources such as electric blankets and space heaters to cope with the cold [6][12]. - Some residents have taken measures to improve insulation within their homes, such as replacing windows and sealing doors, yet these efforts have not fully resolved the heating issues [15][12]. - The community has been actively discussing the need for external wall insulation and system upgrades in their resident groups, highlighting a collective desire for improvement [9][15].