Navien NCB-250/150H Condensing Combi-Boiler – 150,000 BTU

Product Overview

The Navien NCB-250/150H is a high-efficiency, wall-mounted condensing combination boiler designed for residential applications. It provides both space heating and domestic hot water (DHW) in a single compact unit, making it ideal for homes seeking energy-efficient solutions without sacrificing performance.

Key Features

• Dual Functionality: Combines space heating and DHW capabilities, eliminating the need for separate systems.

• High Efficiency: Achieves up to 95% AFUE for reduced energy consumption and lower utility bills.

• Advanced Heat Exchangers: Features dual stainless steel heat exchangers for enhanced durability.

• Modulating Technology: Offers a 15:1 turndown ratio for DHW, allowing precise temperature control and efficiency.

• DHW Priority Mode: Ensures consistent hot water supply when demand spikes.

• Compact Design: Wall-hung unit saves valuable floor space.

• Quiet Operation: Designed for minimal noise for a more comfortable home environment.

• Versatile Venting Options: Compatible with multiple venting materials for flexible installation.

Technical Specifications

• Maximum Heating Input: 150,000 BTU/h

• Maximum DHW Input: 210,000 BTU/h

• Net Output: 120,000 BTU/h

• DHW Flow Rate: Up to 5.4 GPM at a 70°F temperature rise

• AFUE Efficiency: Up to 95%

• Power Supply: 120V, 60Hz

• Weight: Approx. 96 lbs

• Mounting Type: Wall-mounted

Ideal For

• Homes needing both heating and hot water

• Retrofit projects replacing separate boiler and water heater units

• New builds prioritizing efficiency and space-saving design