Navien NCB-240/130H Condensing Combi-Boiler

Navien’s NCB-240/130H condensing combi-boiler is designed to optimize both space heating and domestic hot water (DHW) production in a single, compact appliance. It uses condensing technology to extract more heat from exhaust gases, which improves energy efficiency and can reduce utility bills over time.

Key features include high-recovery DHW performance, modulating gas burner operation, and advanced touchscreen controls for easy setup and monitoring. The unit is designed for tight spaces, with a compact footprint suitable for closets or utility rooms where space is at a premium.

In typical residential installations, the NCB-240/130H supports multiple zones and can be paired with an indirect domestic hot water heater to maintain ample hot water supply even during peak demand. The modulating firing rate helps match heat output to varying loads, contributing to lower energy consumption compared with traditional boilers.