Ключевые слова: air conditioning, backdrop, building, city, cityscape, cold weather, commercial, construction, controls, employment, energy, engineering, environment, equipment, expertise, focus, heating, hvac, industrial, infrastructure, inspection, installation, job, labor, machinery, maintenance, manual work, mechanical, men, occupation, outdoor, profession, professional, protective clothing, rooftop, rooftop unit, safety vests, service, skilled trade, skyline, supervision, system, teamwork, technicians, tools, urban, utility, ventilation, workers, workwear,