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- A 96% AFUE, 2-stage condensing gas furnace featuring a variable-speed ECM blower motor. It provides 50,000 BTU/h heating input, flexible 4-way multipoise installation (upflow, downflow, horizontal), and integrated digital diagnostics designed for residential forced-air heating applications.
- 34-inch height, compact multi-position footprint
- Direct vent and non-direct vent options with PVC/concentric compatibility
- Natural gas standard (propane conversion kits available)
- Installs in upflow, downflow, horizontal left, or horizontal right orientations.
- Two-stage heating automatically modulates output to reduce temperature swings and noise.
- Features modular blower/heat exchanger assemblies and built-in fault code diagnostics history.
- Dual-fuel compatible and engineered to match with Navien cooling coils and air conditioners.
- AFUE Rating96%Input Capacity53,000 BTU/hrNominal Cooling Capacity1.5 to 3.5 tonNumber of Stages2Output Capacity50,000 BTU/hrType4-Way MultipoiseConnection Size1/2 in NPTDimensions17-1/2 in W x 34 in H x 29-1/2 in DFuel TypeNatural GasIgnition TypeHot Surface IgniterManufacturerNAVIEN INCManufacturer #NDF600-050M2V3BMaterialSteelMotor HP.5 HPMotor TypeVariable Speed ECMSeriesNDF-600Temperature Rating35 to 70 deg FVoltage Rating120 VWire Size14 AWG