Developed and patented by Heliotherm, dsi® technology is an electronic system for regulating working fluids.
In heat pumps with dsi technology, the working fluid flow in the refrigeration cycle is regulated electronically, unlike in conventional mechanical regulation systems for working fluids. The system can therefore take far more parameters into account.

» The electronically controlled dsi technology (electronic injection system) enables the expansion valve to respond faster to changes in the refrigeration cycle (e.g. switchovers from heating to hot water) and adapt itself to the required operating conditions.


With a Heliotherm heat pump, you thus have significantly lower operating costs and a higher level of efficiency than with conventional heat pumps.