Professional Boilers

The broad professional range, Unical's true technological strength, includes

  • medium and high power gas and diesel boilers
  • heating units
  • modular heating units
  • cascade boilers for indoor and outdoor applications

Products distinguished by Low NOx emissions, ultra-low emissions, class 5, with power ratings of up to 7,000 kW.


The already famous aluminium condensing boilers patented by Unical, also for outdoor use, 4-star efficiency class and Low NOx, are one of Unical's key products, and they are recognised on the market as being the most technological product in its category. They can be installed practically anywhere, and they stand out for their compact size which enclose power ratings of up to 900 kW and for the modulation range which ensures the minimum instant power necessary rapidly and without wasting energy. Four stars were also awarded to the stainless steel condensing boilers, for condensing heating units - again in stainless steel - and for steel condensing heating units which thanks to special flue gas pipes patented by Unical ensure maximum economy of operation. The range is completed by the three-stage combustion process boilers, with gradual temperature also.


In addition to boilers themselves, Unical's catalogue also contains housing modules for centralised heating systems, zone satellites, energy meter accessories, litre meters and calorie counters, thermostats and thermoregulations, cascade controllers to accommodate the latest technological and regulatory provisions on the subject of: reducing consumption and emission levels in maximum individual comfort. The range also includes primary rings, hydraulic separators, modulating pumps, hot water tanks; these accessories are necessary to fine-tune heating systems.