Navien NCB-250/150HRAL Combi Water Boiler Natural Gas or Propane

The Navien NCB‑250/150HRAL combi water boiler is a high‑capacity wall‑hung condensing combination boiler engineered to deliver powerful hydronic heating and exceptional domestic hot‑water performance from a single, ultra‑efficient unit. With 150,000 BTU of heating output, a robust 250,000 BTU DHW rating, 95% AFUE, and an advanced 11:1 turndown ratio, this NG or LP combi water boiler is built for large homes, multi‑bath properties, and demanding installations. It operates on natural gas or propane, offering maximum flexibility for residential upgrades and replacements.

Key Features
High‑Efficiency Condensing Performance
95% AFUE for outstanding long‑term energy savings

Dual stainless‑steel heat exchangers for superior durability

Low NOx emissions for cleaner, environmentally responsible operation

High‑Capacity Combi System
Hydronic space heating plus on‑demand domestic hot water

150K BTU heating supports whole‑home comfort

250K BTU DHW output handles multiple simultaneous fixtures

Eliminates the need for a separate water heater

11:1 Turndown Ratio
Wide modulation range for precise temperature control

Reduces cycling, improves efficiency, and extends component life

Fuel Flexibility
Operates on natural gas or propane

Ideal for homes without natural gas service or those upgrading older LP systems

Smart Navien Controls
Intuitive digital interface with advanced diagnostics

Outdoor reset compatibility for improved comfort and efficiency

Ready for cascading and common‑venting applications

Compact Wall‑Mounted Design
Saves valuable floor space

Quiet operation suitable for utility rooms, closets, and tight mechanical areas

Dimensions

Height: 27.4 in

Width: 17.3 in

Depth: 13.2 in

Ideal For
Large homes with high heating and hot‑water demand

Multi‑bath or multi‑zone hydronic systems

High‑efficiency natural gas or propane installations

Space‑restricted mechanical rooms

We service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:

Nassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale

Suffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley

Contact us today at (631) 779-3196