Heating pumps



Heat pump Gapsal OKS 13 kW View larger

Heat pump Gapsal OKS 13 kW

New product

Heat pump Gapsal OKS 13 kW consist of pumps for heating and supplying with domestic hot water of residential buildings, using different heat sources - ground, geothermal well, spiral collectors or open water bodies. Ventilation’s residual heat can be used with all heat pumps by using ventilation plant Gapsal Vent.

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5 940,00 € tax incl.

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Gapsal OKS allows building of efficient heat pump systems in heating systems with different configuration, integrating the heat pump with existing solid, oil or gas boiler, if needed.


Suitability for building types

  • apartment buildings
  • apartment buildings
  • private houses
  • buildings under heritage conservation
  • industrial buildings


Gapsal OKS – with output capacity of 6,0; 8,0; 11,0; 13,0; 17,0; 22,0 kW; for use in 80 - 450m2 buildings with heat requirement of 4-25 kW.

Gapsal OKS heat pump contains heat pump, and auxiliary heat part with user interface. Optimum position of components enables easy access for all important assemblies during maintenance. Best components and materials are used in the heat pump. All necessary circulation pumps are installed to the equipment.

Gapsal models use class A circulation pumps. Necessary number of water heaters is used for heating domestic water which heat surface of heat loop conforms to thermal capacity of heat pump.

Gapsal OKS can be used as a module by installing several heat pump devices to the heating system. Different heat sources can be used with Gapsal OKS heat pumps.

Ground collector, open water body collector, geothermal wells, rainwater system, open system, marine or lake water pumping and spiral collectors. Ventilation plant Gapsal Vent can always be added to the heat pump for using residual heat of ventilation. Control of Gapsal OKS can be customized also for using in the ventilation’s heat recovery systems of apartment buildings.


Multilingual user interface enables setting of heat pump depending on the peculiarities of the heating system. In addition to heating and hot water, user interface can be used for cooling by using the heat pump for passive or active cooling. Added coolant sensors activate the relevant menu of the user interface. The user interface of the heat pump can control several mixing units of heating system, regulate temperature in the accumulation tank and control the operation of relevant pump group in case of using solar panels.


Gapsal OKS
Refrigerant R410A R410A R410A R410A R410A R410A
Volume kg 1,25 1,3 1,75 1,9 2,4 2,95
Test pressure MPa 4,5 4,5 4,5 4,5 4,5 4,5
Working pressure MPa 4,3 4,3 4,3 4,3 4,3 4,3
Compressor scroll scroll scroll scroll scroll scroll
Electrical connection V 3x400 3x400 3x400 3x400 3x400 3x400
Electrical capacity kW 1,51 1,82 2,4 3,0 3,8 5,25
Efficiency factor (SCOP) 4,7 4,65 4,75 4,63 4,52 4,66
Heat capacity kW 7,1 8,45 11,4 13,9 17,1 24,5
Brine Ethanol 33% Ethanol 33% Ethanol 33% Ethanol 33% Ethanol 33% Ethanol 33%
Low pressure protection MPa 0,35 0,35 0,35 0,35 0,35 0,35
High pressure protection MPa 4,3 4,3 4,3 4,3 4,3 4,3
Working pressure switch MPa 4,0 4,0 4,0 4,0 4,0 4,0
Weight kg 125 135 145 150 160 180