McLean Cooling Technology, located in Champlin, MN USA, is a subsidiary of Pentair Corporation. McLean specializes in cooling vital electronics used in the industrial, telecommunications, data networking, government and o......McLean Cooling Technology, located in Champlin, MN USA, is a subsidiary of Pentair Corporation. McLean specializes in cooling vital electronics used in the industrial, telecommunications, data networking, government and other global markets. Its product portfolio includes standard and custom air conditioners, heat exchangers, fans and blowers. Pentair Corporation is a publicly held diversified operating company with 16,000 employees worldwide and finished 2007 with $3.40 billion in revenues.