RESOL – Your competent partner in solar and heating controllers, visualisation and more

Sustainable growth prospers on a solid basis – so the innovations of today become the standards of tomorrow. Our research & development division with its extensive lab and testing facilities is our own in-house think-tank. Co-operations with universities and research institutes boost the technological exchange. Top-of-the-range production lines and a sophisticated quality management warrant the best possible products. Several awards and the ISO:9001 certification confirm our course into the future.

Your partner in control technology

The RESOL product range includes a range of high-class solar thermal and heating controllers as well as a broad variety of accessories for the efficient use of energy. All RESOL products are future-oriented, sophisticated and unique in their design. Just like our ideal: nature!

OEM – We develop your product

From the very beginning, we accompany your product or sales idea with our know-how! Our product managers will support you throughout the development process and, in collaboration with you, devise the best solution to suit your wishes. Individual housing design is also possible.


DeltaSol® MX Firmware

DeltaSol® MX Firmware 2.08

  • Extended functions
  • Dew point calculation with FRH(d)

Catalogue 2020


Visualise your system data

The safe and easy way to yield monitoring your RESOL controller with the visualisation portal.

  • For every PC and mobile device
  • No software installation required
  • Without any tedious router configuration

Trade fair dates

Stop by for a visit and let us convince you of our product portfolio all around heating and solar thermal control technology.

Solar & system controllers

DHW exchange controllers

Swimming pool controllers

Heating controllers

Pump stations & accessories

PV heating

Visualisation and remote access

Datalogger & VBus®-accessories

Tools & HE accessories

Thermostats, measuring instruments & calorimeters





  Product portfolio (PDF)