HVAC Ratherm is consistently strengthening its market position, presenting one of the most impressive projects in its history. At the beginning of 2026, the company successfully completed a project for Targi Kielce - exhibition & congress centre, delivering a modern ductless ventilation system with a total capacity of up to 515 000 m³/h. This is the largest project undertaken by Ratherm and a clear signal of the company’s dynamic growth in the advanced HVAC systems segment.

A key element of the project was a pre-launch supply air module with a capacity of 15 000 m³/h, which is now being introduced into Ratherm’s standard product offer. At the time of its implementation, it is the largest device of this type available on the Polish air handling unit market, offering up to 108 kW.

The project for Targi Kielce confirms the company’s capabilities in designing and implementing systems for large-volume facilities with complex spatial structures. Thanks to a wide range of units - from 3 000 to 15 000 m³/h - Ratherm solutions can be effectively applied both in irregularly arranged spaces, including narrow aisles, and in large open areas such as loading zones.

The XD / PN series units used in the project deliver over 2 MW of cooling capacity, ensuring efficient thermal comfort at optimal operating costs. The system distributes 500 000 m³ of air per hour, guaranteeing even air circulation and an appropriate share of fresh air throughout the entire hall volume. The design of the units is based on the most advanced components, with a key role played by the optimal selection of a high-efficiency heat recovery exchanger and energy-efficient EC fans.

An additional advantage of the ductless system is its fast and simplified installation. The process is limited to placing the supply module on a substructure with a mounting frame, followed by the installation of the units, once connected and after roofing works are completed, the system is ready for operation.

The project for Targi Kielce is not only the largest contract in the company’s history, but also a milestone in its 10-year development. This project clearly demonstrates that Ratherm possesses the technical, logistical, and operational capabilities required to successfully deliver the most demanding HVAC investments.

Air Flow Capacity: 515 000 m³/h
Cooling Capacity: 2450 kW
Maximum Heating Capacity: 1350 kW