Multifamily domestic hot water design need not be a complicated or expensive array of water heaters for each residence. A tidy and efficient design can be provided by a centralized heat pump system. To best achieve this, enter the SANCO2 hot water heat pump. These two-component systems can be used as building blocks of a much larger central DHW plant. The SANCO2 also boasts increased efficiency over electric heating element tanks, and lower global warming potential than natural gas and even other heat pump water heaters. Using a centralized DHW plant design, rather than individual units for each residence, the cost is spread out while still providing steady hot water to residents. Consider meeting new energy codes with a centralized hot water heat pump system that provides higher energy efficiency and a carbon free heating system.