The Unical HP OWER ONE 90RKD1 is an Italian-made air-water heat pump designed for high efficiency.

It features an A+++ energy class with a C.O.P. up to 4.85 and E.E.R. up to 5.40. The system uses R32 refrigerant and a DC INVERTER twin rotary compressor for low noise and absorption. It operates at temperatures as low as -20°C and reaches a maximum circulation temperature of 60°C. Technical components include brushless DC INVERTER fan motors and high-efficiency brushless motor INVERTER circulation pumps.

The unit is built with a stainless steel plate water-gas heat exchanger patented for R32 and an air-gas heat exchanger made of aluminum-plated copper tubes with anti-corrosive protection. It comes with a pre-assembled hydronic kit containing a 6 bar safety valve, air bleed valve, INVERTER circulation pump, and circulation flow switch.

This system is suitable for heating and cooling, utilizing an integrated digital regulator for control. It supports domestic hot water production via dedicated external storage and offers optional controls like a touch screen or external thermostat. Built-in functions include automatic defrost, compressor crankcase preheating for low temperatures, auto-restart, and self-diagnosis.