A startup in Germany has developed a novel method for cooling that use no freon gases and is about 40% more efficient than the current freon refrigeration by using magnetocaloric materials. So far the results are impressive. Refrigeration is one of the key areas of change required for greenhouse gas reduction. A refrigerant-free cooling system is an important solution. Magnotherm also claims that this system is adaptable to efficient heat pumps. If so, that could bring about a major change in HVAC systems.