Ключевые слова: aesthetic, appliance, background, ball valve, boiler, boiler house, boiler room, boilerhouse, boilerroom, bright, bronze, clean, corrugation, distribution, energy, engineering, equipment, gas, heat, heating, home, hot, hotel, house, independent, interior, iron, light, luxury, metal, modern, pipeline, pipelines, pipes, plastic, polypropylene, room, solar, steam, steel, stopcock, system, technology, tube, valve, wall, warm, water, white, working,