DETA's solution to the upgrade, a high temperature heat pump (HTHP) producing hot water at 70 degrees, a New Zealand first. Aided by a centralised ammonia-glycol refrigeration system, the HTHP is set to be cleaner and vastly more efficient than the old plant.
As a result of installing the HTHP, there has been a 27% reduction in overall site energy consumption which equates to savings of $235,000. Carbon emissions have been halved and to top it off, the overall system had simple payback period of 2.5 years. The system also produces an abundance of hot water which provides extra savings and allows for future expansion.