The production includes Thermex hot-water and steam boilers. These boilers are made to the highest quality standards and are robust featuring an efficiency of up to 95 %. By integrating a recuperator, the boiler efficiency is additionally enhanced. The tangential input of exhaust gases into the exhaust pipes results in vortex movements by the exhaust gases without the need to use turbulators. Consequentially, the cleaning of the boiler is considerably easier and more cost effective since the turbulators do not need to be dismantled and cleaned.