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Technical details


Under particular conditions (temperature, humidity) condensing water might collect as frost on the heat exchanger and form to ice, which can influence the operation. To avoid this conventional units reverse their cycle in regular intervals to a defrost mode, which interrupts the heating function by switching into cooling mode, in order to deliver heat to the outdoor heat-exchanger, melting off the collected ice.

ESTIA heat-pumps offer a unique anti ice-path due which less and shorter defrost cycles are required. The refrigerant returning from the indoor unit is routed through the anti ice-path on the bottom of the heat-exchanger, before it reaches the Venturi. As the refrigerant does not evaporate before the Venturi, the temperatures of this anti ice-path stay above dew point, keeping the lower part of the heat exchanger ice free. By monitoring the actual temperature of the outdoor heat exchanger the defrost mode will not activate until actually required. Features that increases the COP of the system!


More in heating capacity

Decades of investments in developed technologies make the advantages of Toshiba air to water heat-pumps noticeable every day.

Twin rotary compressors feature control across a wide rotation band at high COP.

Vector controlled IPDU guaranties accurate and fast calculation of the motor current for highest efficiency  in case of ESTIA the vector controlled inverter is equipped with a RISC processor.

The anti ice-path reduces losses in efficiency.

Temperature controlled defrost activates only at extreme conditions. Due their high COP ESTIA systems provide high heating output at low operating costs even during low ambient temperatures.
ESTIA - a noticeable difference.



Heat pump - Toshiba ESTIA

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