Ключевые слова: air, attic, bleak, breeze, control, cool, cooling, copy, cost, cutting, efficiency, exhaust, fins, flow, fresh, heating, home, household, housing, isolated, metal, motion, on, outdoor, outside, preserve, roof, roofing, rooftop, rotate, round, shingles, silver, sky, slope, snowy, space, spin, summer, temperature, top, turbine, vent, ventilation, whirl, whirlybird, white, wind, winter,