Johnson Controls, a global leader for smart, healthy and sustainable buildings, announced the acquisition of M&M Carnot, a leading provider of natural refrigeration solutions with ultra-low global warming potential (GWP), which can help customers meet their sustainability goals while meeting and exceeding environmental regulations. 

“It’s an exciting time in our industry as we continuously seek new opportunities to accelerate the deployment and adoption of safe and sustainable solutions and services,” said Claude Allain, president, Johnson Controls HVAC/R and data centers. “M&M Carnot is well-positioned in its ability to deliver ultra-sustainable industrial refrigeration solutions and will allow us to better serve our growing customer base in this vertical.” 

M&M Carnot designs and manufactures industrial refrigeration equipment and controls that use carbon dioxide (CO2), which has a GWP of 1. By contrast, traditional refrigerants can have GWPs in the thousands, magnifying rather than solving the global warming problem. 

“We’re excited to join global leader Johnson Controls to accelerate our passion for providing sustainable, natural refrigeration solutions that are safe for people and the planet,” said David Sholtis, CEO, M&M Carnot. “The support and resources of Johnson Controls will allow us to scale the business faster by bringing our innovative, environmentally friendly refrigeration and cooling technologies to a growing market in search of energy efficient, green technology. We believe that together, we’ll bring exciting new opportunities for our customers and employees alike.” 

Based in Annapolis, Maryland, and in Trois Rivières, Quebec, Canada, M&M Carnot will add to the growing portfolio of Johnson Controls industrial refrigeration equipment operating on ultra-low GWP refrigerant CO₂. M&M Carnot is one of North America’s largest providers of transcritical CO₂ solutions, including heat pumps and tailored solutions for data centers, positioning Johnson Controls to capture growing demand for this technology. Their combined engineering expertise and ultra-low-GWP technologies also will help Johnson Controls advance its commitment to cut customer emissions and support customers on their net zero journey. 

M&M Carnot Celebrates Maryland Plant Expansion
M&M Carnot earlier this month performed a ribbon cutting ceremony, celebrating the completion of phase one of their 50,000-square-foot expansion to their Federalsburg, Maryland, manufacturing plant. 

M&M Carnot’s facility expansion will be a fully dedicated manufacturing space for the Aquilon Industrial CO₂ package product line. The space has been configured to efficiently manufacture the CO₂ standard packages with an assembly line approach, ensuring maximum quality and lowest lead times.

This expansion further demonstrates M&M Carnot’s mission to provide natural refrigeration equipment and support their customers’ journey to sustainability. This expansion will be the first of others to come in the next 12 to 24 months as M&M Carnot continues to supply natural refrigeration packages and equipment. 

About Johnson Controls 
At Johnson Controls, we transform the environments where people live, work, learn and play. As the global leader in smart, healthy and sustainable buildings, our mission is to reimagine the performance of buildings to serve people, places and the planet. Building on a proud history of nearly 140 years of innovation, we deliver the blueprint of the future for industries such as healthcare, schools, data centers, airports, stadiums, manufacturing and beyond through OpenBlue, our comprehensive digital offering. Today, with a global team of 100,000 experts in more than 150 countries, Johnson Controls offers the world’s largest portfolio of building technology and software as well as service solutions from some of the most trusted names in the industry.