NAVIEN NFC-250/175H High Efficiency Condensing Combi-Boiler

Product Description

The NAVIEN NFC-250/175H is a high-efficiency condensing combi-boiler designed for residential and commercial use. It offers a 95% Annual Fuel Utilization Efficiency (AFUE) and is ENERGY STAR certified. This model is equipped with a Domestic Hot Water (DHW) 15:1 Turn Down Ratio (TDR) and a heating 13:1 TDR. It is approved for installation at high altitudes up to ten thousand one hundred feet and includes conversion kits for various applications.

• 95% AFUE – ENERGY STAR certified
• DHW 15:1 TDR and heating 13:1 TDR
• 2-inch venting up to sixty-five feet, 3-inch venting up to one hundred fifty feet

Product Highlights

This combi-boiler utilizes a patented stainless steel fire tube heat exchanger for improved efficiency and durability. It features a non-metallic condensate base to reduce corrosion issues.

Product Information

Standard Information

• Installation Location: Indoor wall-hung
• Venting Type: Forced draft direct vent

Technical Specifications

• Dimensions: 17.3 inches W x 33.5 inches H x 17.3 inches D
• Boiler Weight: 141 lbs
• Maximum Power Consumption: Less than 15 amperes
• Natural Gas Supply Pressure: 3.5 inches WC to 10.5 inches WC
• Propane Gas Supply Pressure: 8 inches WC to 13.5 inches WC
• Safety Devices: Includes flame rod, APS, and multiple pressure sensors
• Input Max Fire (BTU): 175,000
• Efficiency (AFUE): 95
• Fuel Type: Natural Gas or Propane
• Boiler Connections: 1 inch NPT