The final configuration of HVAC RATHERM units depends on the individual requirements of the investor or the end tenant. External locations—either on the rooftop or adjacent to the building—require flexible outlet configurations. Therefore, for our XK and XD series, we offer a full range of connection types: vertical (bottom VV, top UU), horizontal (HH), and their variations. For rooftop installations, low weight and compact dimensions become critical factors. Regardless of the project type, our AHUs ensure thermal comfort in all served zones. For the heating process, we utilize three core executive modules: heat recovery, an optional mixing chamber, and a heating module (gas-fired, water, or electric heaters). The entire operation is managed by an integral, factory-fitted Plug & Play automation system with online management capabilities.
2. Process facilities often require precise maintenance of temperature and relative humidity. Could you present your solutions for cooling, humidification, and dehumidification processes?
For cooling and dehumidification of large-scale facilities, we utilize our XD unit series, for which we have designed independent, freely configurable refrigeration modules. Depending on the user's expectations, we implement either inverter-driven or multi-stage cooling systems. For humidification processes, we provide power supply and control for electric steam generator modules, powered directly from the AHUs. The most critical element for the correct operation of such complex equipment is a custom-prepared automation application and regular maintenance inspections. Additionally, for production facilities, we suggest—and often require—online remote management capabilities to efficiently diagnose any reported issues.
3. What solutions allow you to compete effectively in the demanding Polish market?
HVAC Ratherm is an engineering and service-driven company, offering clients a range of solutions based on our experience in operating nearly 200 large-scale facilities. The result of our cooperation is a comprehensive investment offer tailored to specific expectations, experiences, and realistic financial conditions. We do not impose rigid solutions; we often work with clients who implement dozens of repetitive facility designs. Simultaneously, we are fully prepared to execute tasks strictly according to provided construction projects. Our competitive edge lies in price flexibility and the immediate availability of most configurations (4 out of 7 XK models are available directly from stock). Freely oriented duct connections and flexible cooling module configurations allow us to adapt swiftly to individual design requirements.
4. Can you identify current trends or innovations that improve the performance, efficiency, and durability of ventilation equipment?
Since the beginning of our production, we have relied on EC fan technology, which guarantees low electricity consumption and minimal noise emissions. Crucially, in our selection process, we present the actual sound power levels of ZIEHL-ABEGG fans, allowing industry specialists to accurately assess sound pressure levels. By partnering with leading heat recovery exchanger suppliers, such as KLINGENBURG and RECUTECH, we are ready to evaluate any proposed solution.
HVAC RATHERM strongly advocates for rotary heat exchangers. In the Central European climate, high-efficiency plate exchangers often provide high efficiency only in theory; at efficiencies around 75–85%, we frequently observe defrosting issues. For production processes, we suggest simpler cross-flow exchangers.
Another radical trend in recent years is the surge in projects featuring gas-fired AHUs. This led us to introduce the new XG standard, equipped with high-efficiency condensing modules. Currently, approximately 50% of HVAC Ratherm units are equipped with modules ranging from 8 to 430 kW.
Regarding refrigeration units, we currently offer ready-made solutions with capacities up to approximately 200 kW. In the coming years, we expect a complete transition from on-off compressors to inverter technology. However, it remains difficult to pinpoint a single dominant refrigerant for new installations.