M&M Refrigeration is the most experienced CO2 refrigeration company in the Americas. M&M has designed, manufactured, installe ... d and serviced refrigeration systems for 50 years—we literally have hundreds of industrial refrigeration systems around the world. M&M designed and installed its first ammonia refrigeration system in 1977, and its first CO2 Cascade Refrigeration System in 2004. We custom design every system to maximize our customer’s refrigeration performance and efficiency. We only employ American Society of Mechanical Engineers (ASME) certified welders and technicians. We have in-house radiographic capabilities. Collectively, our engineering staff has over 175 years of experience. Our facilities include a 136,000-square-foot manufacturing facility in Maryland, a 10,000-square-foot controls manufacturing facility in Florida, and a 7,000-square-foot service support center in Alabama. read more