Danfoss Climate Solutions, a Denmark-based manufacturer of HVAC&R components, has joined the world’s leading natural refrigerant HVAC&R stakeholders as a platinum partner of the NaturalRefrigerants.com marketplace.
Danfoss was founded in 1933 as a manufacturer of thermostatic valves, filter driers and thermostats, among other products. Today, its HVAC&R product lineup includes controllers for transcritical CO2 (R744) racks, semi-hermetic CO2 compressors and shut-off valves for ammonia (R717) industrial refrigeration systems.
One of its newest products, the BOCK HGX56 CO2 T compressor, was recently named the winner of the 2025 AHR Expo Innovation Award for the refrigeration category. The six-cylinder compressor, designed for use in industrial and commercial refrigeration applications as well as large heat pumps, offers up to 135kW (38TR) of cooling capacity and 360kW (102TR) of heating capacity.
“With the push to decarbonize heating and refrigeration, the BOCK HGX56 CO2 T enables customers to reduce both carbon emissions and energy consumption without sacrificing performance,” said Vikas Anand, VP of sales, Danfoss Climate Solutions, North America. “We are honored to be recognized by AHR Expo.”
Danfoss acquired BOCK in 2023, but it has been working with CO2 in commercial refrigeration since 2006. It operates a “smart store” next to its headquarters in Nordborg, Denmark, that serves as a real-world test lab for its R744 refrigeration products.
The working supermarket has 813m2 (8,751ft2) of floor space and a 240m2 (2,583ft2) machine room, home to its R&D lab. It features an integrated CO2 system that provides refrigeration, heating and cooling, with the store sourcing nearly all its electricity from rooftop solar panels.
In addition to CO2 commercial refrigeration, the company made news in the R290 residential heat pump sector at Chillventa 2024, held October 8–10 in Nuremberg, Germany. Danfoss brought a prototype water-to-water residential propane heat pump to the show with a charge of just 130g designed to be installed indoors.
The unit, which could function as a standalone heat pump or a booster in a multi-family building, has a heating capacity of 4.71kW (1.34TR) and a COP of 3.85
“We have a bill of materials ready and qualified for OEMs interested in the unit,” said Matthieu Stoll, Heat Pumps System Engineering Leader. “The charge and performance are designed to deliver reliable results. An OEM simply designs the right system for their application and develops the assembly.”
