Ключевые слова: appliance, background, boiler, burn, card, central, chamber, component, concept, condenser, condensing, consume, consumption, cut, dark, device, domestic, energy, exchanger, fire, fireplace, fuel, furnace, glowing, heat, home, hot, hydraulic, indoors, industrial, industry, interior, living, many, metal, modern, noone, pipe, red, room, solid, solidfuel, structure, system, technology, tube, warm, warmth, water, wood,