United Bank's new headquarters required reliable cooling across eight basement floors served from a single vertical riser — a configuration that pushed standard VRF piping formulas to their limit. ERATEC re-engineered the piping design to keep the system safely within manufacturer parameters while delivering full capacity to every level.










The redesigned piping layout delivered the complete 100 TR cooling load across all eight basement levels while fully protecting compressor reliability — solving a constraint that standard VRF design guidelines could not accommodate.