NCB-250/150H – Condensing Combi-Boiler – 250,000 BTU DHW / 210,000 BTU HTG

Elfagrove NCB-250/150H – Condensing Combi-Boiler – 250,000 BTU DHW / 210,000 BTU HTG

The Elfagrove NCB-250/150H is a 95% AFUE condensing combi-boiler that combines powerful space heating and on-demand domestic hot water in a single wall-hung unit. With a maximum input of 150,000 BTU/hr and a net AHRI rating of 120,000 BTU/hr, this unit delivers efficient performance for larger residential applications. It offers a 11.1:1 turndown ratio for heating and a 15:1 ratio for hot water, providing responsive modulation based on system demand.

The NCB-250/150H is field convertible from natural gas to propane and supports a range of venting materials including PVC, CPVC, polypropylene, and stainless steel. It also features compatibility with Elfagrove’s Elfagrove Link smart home controller for remote access and monitoring.

Features:

• 95% AFUE high-efficiency rating
• 150,000 BTU/hr heating input
• 120,000 BTU/hr net AHRI rating
• 11.1:1 turndown ratio for space heating
• 15:1 turndown ratio for domestic hot water
• Field convertible between natural gas and propane
• Smart controls with Elfagrove Link compatibility
• Energy Star certified
• Compact wall-mounted design
• Compatible with 2″ or 3″ venting (PVC, CPVC, polypropylene, stainless steel)

Applications:

• Whole-home space heating and domestic hot water
• Medium to large residential homes
• Indoor installations with venting flexibility
• Natural gas or propane systems
• Retrofits and new construction
• Smart home integration with Elfagrove Link controller