The heat pump is suitable for higher building heat loads between 16 and 20 kW. It delivers heat and DHW up to 65°C. The slimline indoor unit has a footprint of less than half a square metre. The TERRA DX 18 can be cascaded for higher output demands.

Energy efficient
Climate zone (middle)
Energy efficiency class (D to A+++)
P rated
21 kW
Efficiency ETAs
213,0 %
Useable for
  • Detached and two-family houses
  • Apartment and commercial buildings
  • Underfloor heating
  • Radiators up to 60°C
Max. flow temp. 65 °C
OTE controller

Features and options

OTE home climate manager

With its OTE home climate manager, OCHSNER focuses on intelligent, user friendliness for the control of your heat pump system

Surface designs

By incorporating natural, warm materials, a technical product can be transformed into a piece of furniture – configuring

OCHSNER ground source heat pumps

OCHSNER ground source heat pumps use the ground as an abundant, free heat store via horizontal collectors or geothermal probes with maximum efficiency.

To overview