Low temperature heating systems
Weishaupt Thermo Unit S

Compact heating unit for houses and apartment buildings

Reliable, efficient and economic: Experts praise the Weishaupt Thermo Unit S for the easy installation, the simple operation and the highly convenient servicing. House owners value it as a reliable partner and as an exemplary and dependable energy-saver.


  • Excellent heat output: The vertically arranged boiler body and the innovative Weishaupt ThermoSave system ensure a selective temperature distribution in the body of the boiler. This makes for a uniformly high efficiency.
  • Low emission levels: The boiler geometry improves the flue gas recirculation and thus reduces emissions.
  • Great versatility: The Weishaupt Thermo Unit S can be fired by either an oil or gas burner.
  • Simple operation: The Weishaupt Thermo Unit S is controlled using a mobile control unit.
  • Fully suitable for condensing units: Using the Weishaupt condensing module, the efficiency increases to a standard efficiency of up to 102 percent Hi (96.2 % Hs).
  • Long life: The vertical arrangement of the components prevents condensation in the boiler area. Residues can easily be removed during servicing.
  • Low space requirement: The boiler requires only around 0.5 sq m of floor area.
  • Fuel: Weishaupt oil and dual fuel burners are suitable for use with fuel oil EL and low sulphur fuel oil EL to DIN 51603-1, as well as fuel oil EL with additives of up to 10 % bio components to DIN 51603-6 (2007-11), fuel oil EL A Bio 5 and 10.


For further information please contact your nearest heating specialist for Weishaupt products.

Weishaupt. That's reliability.