Benchmark NX brings AERCO’s trusted Benchmark performance, reliability, and innovation legacy to light commercial applications. Available in 399 and 500 MBH, Benchmark NX is designed for multifamily buildings, schools, retail spaces, office buildings, small healthcare facilities, and other applications that require a compact, high-efficiency boiler that delivers dependable comfort, lower energy costs, and scalable operation in mechanical rooms where space is at a premium.
The Benchmark NX boiler extends the proven Benchmark platform into a right-sized solution for smaller commercial systems. With thermal efficiency up to 97.4% and a 10:1 turndown ratio, Benchmark NX helps facilities improve seasonal efficiency while maintaining reliable comfort across varying load conditions.
Top-Level Features
- Up to 97.4% thermal efficiency
- 10:1 turndown ratio for improved part-load performance
- Advanced Edge® Controller with integrated sequencing for up to 16 boilers
- Built-in BACnet IP/MSTP and Modbus communication for BMS integration
- Variable primary flow capable
- Compact, lightweight design for tight mechanical rooms
- Low NOx operation of ≤20 ppm (capacity dependent)
- Broad venting options including AL29-4C, polypropylene, PVC, and CPVC
- Stainless steel fire-tube heat exchanger with 10-year warranty
Built for Light Commercial Performance
Smaller commercial facilities often face a unique combination of challenges, including limited mechanical room space, fluctuating demand, and pressure to reduce installation and operating costs. Benchmark NX addresses these needs with a compact, lightweight design that simplifies installation while delivering the high efficiency and advanced controls expected from the Benchmark family.
“With Benchmark NX, AERCO is bringing the trusted Benchmark standard into smaller-capacity commercial systems in a compact boiler designed for real world installations. Customers get big performance in a small footprint – strong part load efficiency, flexible integration, and the peace of mind that comes with AERCO’s industry leading warranty.”
— Christian Zapata, Product Manager, AERCO
At the heart of the boiler is AERCO’s advanced Edge® Controller, which supports flexible application configurations, integrated sequencing of up to 16 boilers, and proactive maintenance alerts to help improve uptime. Built-in BACnet IP/MSTP communication, Modbus support, remote setpoint capability, and indoor/outdoor reset functionality allow Benchmark NX to integrate seamlessly with modern building management systems.
Designed for Flexible Installation and Long-Term Value
Benchmark NX supports variable primary flow operation and offers broad venting flexibility, including AL29-4C, polypropylene, PVC, and CPVC options. Combined with its compact footprint and lightweight construction, these features help reduce installation complexity and make the unit well suited for both new construction and retrofit projects.
The boiler’s stainless steel fire-tube heat exchanger is designed for long-term durability and is backed by a 10-year heat exchanger warranty. Its ability to operate efficiently at part load while supporting multi-boiler systems gives engineers and facility teams greater flexibility when designing scalable, high-performance heating plants.
By combining Benchmark’s proven efficiency and reliability with a compact form factor, Benchmark NX provides a practical solution for facilities seeking to lower energy use, simplify installation, and maximize performance in smaller commercial applications.
Learn More
For full specifications, dimensions, and application details, visit the Benchmark NX product page.