The FS Curtis NXHE Series represents ultra-high efficiency two-stage rotary screw air compressors engineered for large industrial air demand and continuous process applications. Available from 90 to 260 kW, the NXHE platform utilizes dual compression stages to maximize volumetric efficiency while minimizing specific power consumption. In the two-stage design, air compression is split into two optimized steps with inter-stage cooling to remove heat of compression. This significantly reduces compression work, lowers discharge temperature, and improves isentropic efficiency. Compared to equivalent single-stage compressors, NXHE systems deliver up to 15% more airflow with corresponding energy savings. The compressors feature precision-machined rotor profiles, heavy-duty bearings, and independent lubrication circuits supplying oil to critical wear components, extending airend life under high load conditions. Direct drive transmission ensures loss-free torque transfer and reduced mechanical complexity. Advanced eCOOL™ technology integrates compartmentalized airflow paths, oversized coolers, and VSD-controlled cooling fans to manage thermal stress and enhance package reliability. Sound-attenuated enclosures with laminated insulation reduce operational noise. NXHE units incorporate iCommand intelligent controllers with full-color HMI, trending, remote communication, and predictive diagnostics. Optional DemandSmart™ energy management and FS-SmartConnect™ IoT monitoring enable real-time performance tracking and lifecycle optimization. These compressors are ideal for power plants, steel, cement, mining, oil & gas, textiles, and large manufacturing facilities requiring high-capacity, energy-optimized compressed air systems.