The Rheem Commercial Heat Pump Plus Range features factory-built and tested multi-stage units that operate like a bank of smaller units with vertical discharge, but provide footprint, installation time and installation cost benefits by offering simplified plumbing and electrical works requirements.

An upgraded micro-controller allows multi-stage units to provide redundancy by operating separate refrigerant circuits in a 'first-in-first-out' configuration whilst rotating the lead compressor to provide even duty. Energy reduction and product life improvement is also achieved owing to better control of the operating parameters.