Ключевые слова: ac, air, building, business, condition, conditioner, conditioning, construction, electric, electrical, electrician, electricity, engineer, engineering, equipment, factory, furnace, heat, home, hvac, industry, install, installation, installer, installing, job, machine, maintenance, male, man, manual, manufacture, mechanical, people, person, production, professional, repair, repairman, safety, service, system, team, teamwork, technician, technology, tool, work, worker,