General Electric nf96u045s3b Gas Furnace 45000 Btu/h 96% Afue

Product Description

The GENERAL ELECTRIC nf96u045s3b is a single-stage upflow and horizontal-flow gas furnace rated at 45,000 BTU/h with a 96% AFUE efficiency rating. It uses a constant torque motor for consistent airflow delivery and features crimped heat exchangers rather than welded construction. Pre-formed flanges and Insta-Position technology simplify installation positioning during initial setup. The unit is finished in gray and is designed for residential heating applications. Licensed HVAC technicians install and commission this furnace. At 96% AFUE, the unit qualifies as a high-efficiency gas appliance under current federal minimum efficiency standards.

The nf96u045s3b is sized for residential applications requiring up to 45,000 BTU/h of heating output, equivalent to a 3-ton nominal capacity system. The upflow and horizontal-flow airflow configuration gives installers flexibility to orient the unit to suit the available mechanical space, whether in a basement, closet, attic, or crawlspace application with horizontal ductwork. The constant torque motor supports steady static pressure performance across a range of duct configurations common in residential construction.

Key Features

• 96% AFUE single-stage gas furnace for high-efficiency residential heating
• Upflow and horizontal-flow airflow orientation for installation flexibility
• Constant torque motor for consistent airflow under varying static pressure
• Crimped heat exchangers with pre-formed flanges via Insta-Position technology
• Limited lifetime heat exchanger warranty with registration
• Gray cabinet finish with compact footprint

Compatibility

Designed as an OEM-style residential gas furnace for upflow and horizontal-flow installations requiring a single-stage, 45,000 BTU/h heating appliance at 96% AFUE.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with local mechanical codes and the IFGC. Shut off gas supply and disconnect electrical power before any service or installation work. Verify vent and combustion air requirements for a 96% AFUE condensing furnace, including proper condensate drainage. Do not exceed the listed airflow orientation; confirm cabinet positioning matches the selected upflow or horizontal-flow configuration before making gas, electrical, and duct connections.

Technical Specifications

• Product Type: Gas Furnace
• Heating Capacity: 45,000 BTU/h
• AFUE: 96%
• Heating Stages: Single-Stage
• Airflow Orientation: Upflow / Horizontal Flow
• Tonnage: 3 ton nominal
• Motor Type: Constant Torque
• Emissions Level: Standard
• Color: Gray
• Overall Height: 33 inches
• Overall Width: 17.5 inches
• Overall Depth: 28.5 inches
• Net Weight: 109 pounds
• Approximate Shipping Weight: 119 pounds
• Parts Warranty: Limited 5-year entire appliance; Limited 10-year entire appliance with registration; Limited 20-year heat exchanger; Limited lifetime heat exchanger with registration
• Labor Warranty: No Warranty

Standard Information

• Brand: GENERAL ELECTRIC
• Manufacturer Part Number: nf96u045s3b