General Electric nf80u070s3a Gas Furnace 70K Btu 80% Afue

Product Description

The GENERAL ELECTRIC nf80u070s3a is a single-stage, upflow and horizontal-flow gas furnace rated at 70,000 BTU/h with an 80% AFUE efficiency rating. It uses a constant torque motor for reliable, consistent airflow delivery. The cabinet measures 33 inches tall, 14.5 inches wide, and 28.5 inches deep, making it suited for closet, alcove, or attic horizontal installations where space is limited. Crimped heat exchangers replace welded construction, reducing stress points across thermal cycles. Pre-formed flanges and Insta-Position technology simplify field installation and cabinet alignment. Licensed HVAC contractors handle installation and commissioning of this unit.

This furnace is designed for residential forced-air heating applications. Its upflow and horizontal airflow configurations allow installation in a range of equipment locations, including utility closets, basements, attics, and crawlspace platforms. The single-stage heat operation pairs well with standard thermostats and is a straightforward replacement or new-construction fit in residential gas heating systems. The 3-ton rated airflow capacity aligns the unit with matched cooling coils in split-system configurations.

Key Features

• 80% AFUE single-stage gas heat operation
• 70,000 BTU/h heating capacity
• Constant torque motor for stable, efficient airflow
• Upflow and horizontal airflow configurations supported
• Crimped heat exchangers for improved thermal cycle durability
• Insta-Position technology with pre-formed flanges for faster installation

Compatibility

Designed as an OEM-style residential gas furnace for upflow and horizontal-flow installations in forced-air systems with a 3-ton cooling capacity pairing.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with local mechanical codes and the manufacturer written instructions. Disconnect electrical power and shut off the gas supply at the service valve before any service or installation work. Follow applicable IFGC requirements for gas line sizing, venting, and combustion air. Do not operate the unit without all panels, covers, and vent connections fully secured and verified.

Technical Specifications

• AFUE: 80%
• Heating Capacity: 70,000 BTU/h
• Heating Stages: Single-Stage
• Airflow Configuration: Upflow / Horizontal
• Motor Type: Constant Torque
• Tonnage: 3 tons
• Emissions Level: Standard
• Color: Gray
• Overall Height: 33 inches
• Overall Width: 14.5 inches
• Overall Depth: 28.5 inches
• Net Weight: 101 pounds
• Approximate Shipping Weight: 111 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: nf80u070s3a