Ключевые слова: ac, air, building, central, climate, cold, commercial, compressor, condition, conditioner, conditioning, control, cool, cooler, cooling, electric, electrical, electricity, equipment, factory, fan, heat, heater, hvac, industrial, industry, machine, machinery, metal, outdoor, outside, plant, power, refrigerant, refrigeration, repair, roof, rooftop, system, technology, temperature, unit, ventilation,