HTS redesigned the Service Credit Union chiller modules by providing 3 ClimaCool Model UCH 50 ton water to water heat pump modules and 1 ClimaCool Model UCH 30 ton water to water heat pump module. These 4 modules replaced the existing 8 modules serving the building and also eliminated 90 of 96 previous pipe connections. The modules are designed for simultaneous heating and cooling operation with built in headers.