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The document emphasizes the need to conserve heat and reduce energy consumption to save money and protect the environment. According to the document, a significant portion of heat is lost through gaps in doors and windows. It is estimated that nearly 30% of heat escapes through these openings. To mitigate this issue, the document recommends taking elementary measures to improve thermal insulation, such as sealing gaps and applying insulation materials. This simple step can increase the room temperature by 4-5°C. In addition to doors and windows, the document notes that heat is also lost through ventilation openings, particularly in high-rise buildings. To address this issue, the document suggests equipping ventilation openings with special doors or using a piece of cardboard to block the airflow. This can increase the room temperature by 5-7°C. The document also highlights the importance of proper maintenance of heating systems. It notes that electric fans can quickly remove a significant amount of heat from a room, and recommends turning them off as soon as they complete their task. Furthermore, the document advises checking the heating system for airlocks, which can reduce the efficiency of the system. The document also emphasizes the need to optimize the design of heating systems. It notes that decorative panels on radiators can reduce heat output by up to 20% and recommends avoiding decorative elements that can obstruct airflow. Additionally, the document suggests that radiators placed in recesses can have a 10% lower heat output than those that protrude into the room. The document also explores the use of thermal insulation materials to improve the efficiency of heating systems. It notes that a thermal insulation screen covered with aluminum foil can increase the heat output of a radiator by 20% and reduce energy consumption by 4%. The document recommends applying the foil to a wooden panel and placing it behind the radiator. The document also discusses the importance of radiator design and color. It notes that a smooth, dark-colored radiator can increase heat output by up to 10% compared to a white radiator. The document recommends cleaning and repainting radiators in a dark color to improve their efficiency. The document also highlights the importance of window treatments in reducing heat loss. It notes that long curtains can account for up to 20% of heat loss through windows and recommends using curtains that cover the radiator to prevent heat from escaping. Finally, the document emphasizes the need to maintain the integrity of building envelopes to prevent heat loss. It notes that gaps in entrance doors and broken windows in building lobbies can account for up to 15% of total heat loss and recommends sealing these gaps to conserve heat.