The Daikin Altherma is a discontinued air to water heat pump system available in three types: split-type, which has an outdoor compressor and an indoor hydronic parts unit; monobloc, which has an outdoor unit only in which the compressor and hydronic parts are combined; and the hybrid, which combines a heat pump and a gas boiler for both space heating and domestic hot water. The Altherma also has a solar integration option. It uses an inverter based scroll compressor with Pulse Width Modulation technology and a swing compressor with Pulse Amplitude Modulation technology. It has a digital user interface with information such as error codes, time, day of the week and temperature, and the unit's heat exchanger features anti-corrosion treatment.
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