General Electric NF80U045S3A 45K BTU 80% AFUE Natural Gas Furnace

A compact, reliable natural gas furnace designed for smooth airflow, quiet performance, and long‑term durability. The General Electric NF80U045S3A natural gas furnace delivers 45,000 BTU of heating output with an 80% AFUE rating, making it an excellent choice for smaller homes, condos, and well‑insulated spaces. This natural gas furnace 1‑stage gas valve provides simple, dependable heating, while the constant‑torque ECM blower improves airflow efficiency and pairs seamlessly with 3‑ton cooling systems. The slim upflow/horizontal A‑cabinet design is ideal for tight mechanical rooms, closets, and attic installations.

Cabinet Dimensions

• Height: 34 in
• Width: 14 in
• Depth: 28.75 in

Key Features

• 45,000 BTU Heating Output – Perfect for smaller homes or energy‑efficient construction.
• 80% AFUE Efficiency – Standard‑efficiency performance with a lower upfront cost.
• 1‑Stage Gas Valve – Straightforward, reliable heating with consistent performance.
• Constant‑Torque ECM Blower – Efficient, steady airflow with reduced energy consumption.
• 3‑Ton Airflow Capacity – Ideal match for 3‑ton AC or heat pump systems.
• Upflow/Horizontal “A” Cabinet – Compact footprint for basements, closets, attics, and tight spaces.
• Sealed, Insulated Cabinet – Reduces heat loss and minimizes operating noise.
• GE Build Quality – Engineered for durability, reliability, and long service life.

We service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:

Nassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale

Suffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley

Contact us today at (631) 779-3196