Features: 1) Pure energy extracted from the ground water 2) Extremely efficient 3) The energy performance of the water-to-water heat pump models sets standards. The ratio of the free environmental energy gained and the electric energy input is extremely favorable 4) PHNIX offers the new generation of water-to-water heat pumps. The compact PHNIX heat pumps ensure powerful and comfortable heating in a minimum of floor space. Heating capacities of up to 27 kW can be produced using ground water of nearly all quality levels. This means that the sturdiness of the PHNIX devices sets new standards. An innovative spiral-type heat exchanger made of corrosion-resistant stainless steel, with even its solder seams sealed, ensures permanent operational reliability 5) Innovative freeze protection 6) PHNIX stands for maximum operational safety. The spiral heat exchanger is protected against local ice formation on the inside due to its special geometry 7) Silent cooling 8) The ELIWELL cooling controller, available as an accessory, extends the functionality of the heat pump controller (manager) by adding the cooling operating mode. The transfer of the cooling output is effected by a heat exchanger the size of which depends on the desired output and the water quality 9) Integrated heat pump manager with 4 x 20-character LC display, comfortable operation with 6 keys, menu with plain-text display and diagnosis function 10) Highly efficient and quiet-running scroll compressor for the environ-safe refrigerant R407C evaporator for optimal heat transfer via highly efficient spiral-type heat exchanger with its solder seams sealed for optimized protection against corrosion and freezing for optimization of cooling circuit to ensure high coefficient of performance 11) Insulated flexible hose connection for both heating and well system 12) Integrated soft starter for low-noise, smooth compressor start-up and limiting starting currents to max. 30A 13) Vibration isolation of the entire cooling circuit towards the housing in order to minimize vibrations transmitted into the building 14) Space-optimized construction taking up floor space of 500-600mm only 15) Brine-to-water heat pumps 16) Space-saving design with a footprint of 500 x 600 mm 17) Insulated flexible connecting tubes for connection to the heating and brine circuits 18) Integrated heat pump manager with 4 x 20-character LCD screen, comfortable 6-button operation, menu-guidance in plain text as well as diagnostic function 19) Vibration isolation of entire refrigeration circuit 20) Integrated soft starter for limiting the starting current to 30A 21) Top performance figures 22) The economizer installed as standard optimizes the refrigeration circuit and improves the coefficient of performance