Navien NCB-250/150H, 210,000 BTU Condensing Combi-Boiler | Calgary Installation

The Navien NCB-250/150H is a high-capacity condensing combi-boiler designed for residential indoor wall-hung installation, delivering up to 210,000 BTU for domestic hot water and 150,000 BTU for heating. Ideal for larger Calgary homes, it combines space heating and DHW in a single, energy-efficient unit.

Featuring advanced dual stainless steel heat exchangers, smart LCD controls with quick dial wheel and Setup Wizard, and a field-convertible gas system for natural gas or LP (up to 10,100 ft.), this model ensures reliable performance and flexible installation. It also supports cascading up to 15 NPE water heaters and common venting up to 7 NPE water heaters, with built-in pumps and valves for multi-zone setups.

Key Features

• Model: NCB-250/150H

• Max DHW Input: 210,000 BTU/H

• Max Heating Input: 150,000 BTU/H

• High Efficiency Condensing Combi-Boiler

• DHW to Heating TDR: 15:1 DHW, up to 11:1 heating

• Advanced dual heat exchangers

• Smart Controls: LCD display, quick dial wheel, Setup Wizard

• Field Convertible Gas System (NG/LP)

• Cascading: Up to 15 NPE water heaters

• Common Venting: Up to 7 NPE water heaters

• Built-in pumps & valves

• Venting: 2” up to 65’ / 3” up to 150’

• Application: Residential heating and DHW

Calgary installation available.