Power versions:
HAKL MK-1 135         3,5 kW     16 A     230 V
HAKL MK-1 145     4,5 kW     20 A     230 V
HAKL MK-1 155     5,5 kW     25 A     230 V


Electric flow water heater, electronically operated with pressure operation

i001 Pressure mode
i004 Electronic switching
i005 Switching power NO
i007 Level of protection IP 45
i008 Voltage 230 V


  • installed to pressure-free and commonly available water faucets
  • 6 bar pressure mode with switching from 0.05 MPa
  • electronic switching with a control unit
  • wiring of 230V at 3.5 kW directly to the socket
  • immediate and continuous water heating up to 43 °C
  • one performance level of heating coils
  • electrical two-stage protection against overheating of the coil

In addition to over / under sink or kitchen washbasin installation, HAKL MK-1 can be placed directly into the shower cubicle or to the outside on the terrace. The electronic control unit allows installation in water supply systems containing home booster sets with frequent aeration and repeated discharging of water supply system.

The heater can be connected to your own custom faucets through plumbing couplings (fittings). Electronic system records declines in power supply and triggers a flashing light to alert the user of a decline in heating performance. The control unit with two thermal fuses significantly extends the life of the heating coil.

Other specifications are the same as for the HAKL PM-B model series.


Model Power input Current Voltage Wather press min. Wather press max. Protection class
HAKL MK-1 135 3,5 kW 16 A 230 V 0,4 MPa 0,6 MPa IP 45
HAKL MK-1 145 4,5 kW 20 A 230 V 0,5 MPa 0,6 MPa IP 45
HAKL MK-1 155 5,5 kW 25 A 230 V 0,6 MPa 0,6 MPa IP 45


HAKL MK-1 135 HAKL MK-1 145 HAKL MK-1 155
Input 3,5 kW 4,5 kW 5,5 kW
Wash basin ●● ●●● ●●●
Kitchen ●● ●●●
Shower ●●
Number of consumption points 1 1 2

Key: ●●● three symbols indicate the maximum suitability of application