Ключевые слова: aged, appliance, architecture, big, building, central, closeup, cold, comfort, consume, consumption, corridor, domestic, energy, expense, gas, hall, heat, heater, heating, home, hot, house, indoor, industry, inefficient, interior, metal, old, pipe, plumbing, radiator, room, save, saving, season, system, temperature, thermal, tube, valve, wall, warm, warmth, water, white, window, winter,