Extensively tried and tested, proven a thousand times over

The proven UNIMAT 3-pass design has been used for decades – with overwhelming success. The UT-M is offered in various sizes and can also be used as a multi-boiler system in pooled output. It is CE certified and is designed and equipped in compliance with the European Pressure Equipment Directive.

With a wide range of application options

The UT-M proves its outstanding efficiency in central heating systems for district and local heating supply. But the versatile hot water boiler is also used for commercial and industrial heating applications in the most diverse sectors.


The inserted flame tube ends in an inner, waterflushed smoke gas reversing chamber, which leads into thefirst smoke tube pass. The first smoke tube pass and second smoke tube pass are free of flow components. The functional round design ensures optimal pressure resistance. Furnace, water chamber volume, radiant and convective heating surfaces are perfectly dimensioned and matched to each other. The boiler front door can be fully hinged, optionally opening to the right or left.

The entire cross section of the boiler is freely accessible. This ensures simple and easy maintenance, cleaning and inspection. The high quality mineral wool matting insulation over the entire boiler body and the special heat insulation material in the front door ensure that there is only a negligibly small radiant loss. The heat generator can already be fitted with an integrated flue gas heat exchanger or condensing heat exchanger ex works on request. The certification in accordance with European Pressure Equipment Directive ensures a high operational and safety temperature level up to a max. of 190 °C.