The 65kW capacity units supply hot water up to 90°C, with a COP greater than 4.
This includes 110 units that have been installed at 40 universities across the country since 2006.
Hailiang Business Hotel in Zhuji replaced its existing R22 heat pumps with six ITOMIC 65kW (18.5TR) units.
Automatic Heating has installed more than 100 Itomic CO2 heat pumps in a wide range of commercial and residential projects, boasting COPs of up to 4.2.
Japan remains the world leader by far in terms of using natural refrigerants for domestic water heating, while the number of CO2 heat pumps is growing by hundreds of thousands of units annually, new data shows.