AERCO's Esteem 399 wall-hung condensing boiler delivers 3.6:1 turndown and 95% efficiency

AERCO International introduces the AERCO Esteem 399 wall-hung condensing boiler, which brings high efficiency and reliability to a variety of hot water applications. The AERCO Esteem 399 delivers 3.6:1 turndown and 95% efficiency, which helps improve system operation and reduce overall energy consumption in applications requiring 112,000 to 399,000 BTU/hr.

The AERCO Esteem 399 achieves best-in-class performance due to its design. A corrosion-resistant 439 stainless steel fire tube heat exchanger makes the boiler well suited for today’s efficient, condensing hydronic heating systems. Thermal efficiency is maximized by the heat exchanger tube design, which creates flue gas and water turbulence.

A premix air/fuel blower and stainless steel burner capable of modulating the firing rate from 28% to 100% allow the AERCO Esteem 399 to closely match heating needs without short cycling or reducing efficiency. The burner features whisper quiet operation of <50 dBa and reliable spark ignition.

Compact in design, the AERCO Esteem 399 requires minimal space. Simple to install, the boiler can be designed with direct or conventional venting made from PVC, CPVC, poly propylene or Al29-4C materials to fit any code requirement. 

The AERCO Esteem 399 also has clean combustion. As a result, it is well suited for low NOx and other environmentally conscious applications. The boiler meets ASME and cETLus standards.

The AERCO Esteem 399 is designed for easy troubleshooting and optimum system performance. It features an intelligent, four-digit interface module that is located on the boiler so engineers, facilities managers and other personnel can quickly see system statistics. Parameter values and diagnostic codes can be fully adjusted using the module as well. 

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