General Electric nf97u090m4c Gas Furnace 90K Btu 97% Afue

Product Description

The GENERAL ELECTRIC nf97u090m4c is a modulating upflow and horizontal flow gas furnace rated at 90,000 BTU/h with a 97% AFUE efficiency rating. It uses a variable speed motor to match heating output to demand, reducing short-cycling and improving comfort across different load conditions. The crimped heat exchanger construction and modulating gas valve allow precise control over fuel input, making this unit well-suited for residential systems where efficiency and consistent airflow are priorities. Licensed HVAC technicians install and commission this furnace.

This furnace is designed for upflow and horizontal flow configurations, giving installers flexibility during new construction or replacement projects. At 4 tons of airflow capacity and 90K BTU/h input, it fits mid-to-large residential applications where heating demand requires a high-output, high-efficiency unit. The gray cabinet finish and pre-formed cabinet flanges support straightforward field installation. Insta-Position technology allows the unit to be repositioned for different installation orientations without additional fabrication.

Key Features

• 97% AFUE modulating operation for precise fuel consumption and consistent indoor temperatures
• Variable speed ECM-style motor adjusts airflow to match heating stage output
• Upflow and horizontal flow capable — single unit covers multiple installation configurations
• Insta-Position technology simplifies orientation changes during installation
• Crimped heat exchanger construction — no welds at critical joints
• Limited lifetime heat exchanger warranty with registration

Compatibility

Designed as an OEM-style high-efficiency modulating gas furnace for residential forced-air heating systems in upflow or horizontal flow applications.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with local mechanical codes and the appliance manufacturer instructions. Shut off all gas supply and electrical power to the system before beginning any service or replacement work. Venting must comply with applicable fuel gas codes, including IFGC requirements for 97% AFUE condensing appliances, which typically require PVC or CPVC vent piping. Condensate drainage must also be properly routed per local plumbing codes.

Technical Specifications

• Product Type: Gas Furnace
• AFUE: 97%
• BTU/h Output: 90,000 BTU/h
• Heating Stages: Modulating
• Airflow Configuration: Upflow / Horizontal
• Tonnage: 4 Ton
• Motor Type: Variable Speed
• Emissions Level: Standard
• Color: Gray
• Overall Height: 33 inches
• Overall Width: 21 inches
• Overall Depth: 28.5 inches
• Net Weight: 144 pounds
• Approximate Shipping Weight: 154 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: nf97u090m4c