This product has been discontinued.
Overview
When it comes to residential central heating units, Goodman gas furnaces stand among the best. For example, the Goodman GMSS96 Single-Stage 800CFM 40k BTU 96% AFUE Gas Furnace is a true competitor in the modern HVAC marketplace. It features a heavy duty aluminized-steel tubular heat exchanger, stainless steel secondary heat exchanger, color-coded low voltage terminals, single-stage gas valve, silicon nitride igniter, and single-speed induced draft blower.
Need a small, inexpensive and high efficiency furnace? The GMSS96 is one of the smallest high efficiency furnaces offered from Goodman!
Like all Goodman furnaces, the GMSS96 comes packed with high quality features. With its multi speed indoor blower motor, you can expect a consistent amount of airflow that can be adjusted to your liking. The cabinet is constructed with a heavy gauge steel and only allows an air leakage of less than 2%, delivering the air you desire, where you want it! Goodman has been providing the industry with HVAC solutions for over three decades. The satisfaction and confidence in this products shows with long lasting and reliable warranty protection.
The 40k BTU 96% AFUE Multi Speed Goodman Gas Furnace - Upflow/Horizontal - 17.5" Cabinet is lightweight and can be easily installed. Weighing around 100 lbs it’s on the lighter side furnaces and can be moved easily with a dolly. If you combine this furnace with an air conditioning system, you will be glad to know that was built to be compatible with conditioning coils.
With a size of 40,000 BTU, this furnace can provide heat for spaces that are up to 700 square feet in cooler climates and 1300 square feet in warmer climates. If that doesn’t fit your application, look through our large variety of furnaces of various sizes offered by Goodman!

Manufacturer Highlights
The Goodman® brand GMSS Series Gas Furnace offers energy efficiencies and operating sound levels that are among the best in the heating and cooling industry. Quality manufacturing as well as easy installation and maintenance make this unit one of the best values on the market.
Standard Features
- Heavy-duty aluminized-steel tubular heat exchanger
- Stainless-steel secondary heat exchanger
- Single-stage gas valve
- Durable Silicon Nitride igniter
- Multi-speed blower motor
- Quiet single-speed induced draft blower
- Self-diagnostic control board
- Color-coded low-voltage terminals
- All models comply with California Low Nox emissions standards
Cabinet Features
- Designed for multi-position installation
- Certified for direct vent (2-pipe) or non-direct vent (1-pipe)
- Easy-to-install top venting with optional side venting
- Convenient left or right connection for gas and electrical service
- Cabinet air leakage (QLeak) - 2%
- Heavy-gauge steel cabinet with durable finish
- Foil-faced insulated heat exchanger cabinet
- Airtight solid bottom or side return with easy-cut tabs for effortless removal in bottom air-inlet applications
Warranty Terms
For a full description of all warranties applicable to this product as well as individual manufacturer requirements, please review the manufacturer's consumer brochure and/or product warranty documents. Online warranty registration must be completed within 60 days of installation. Due to state laws, online registration is not required in California or Quebec. Call for warranty availability on scratch & dent and surplus items.
Installation of any product must comply with all applicable codes and regulations. The service of a certified and trained electrical technician may be required for the installation process.
Specifications
Model | GMSS960402BN |
---|---|
UPC | 663051469150 |
AHRI Number | 7365095 |
Gas Furnace Efficiency | 96+% |
Air Flow Direction | Horizontal, Upflow |
Configuration | Floor Mounted |
Avg Coverage Area | 750 - 900 Sq Ft |
Blower Motor | Multi Speed |
Cooling Compatibility (up to) | 2 Ton |
Electrical Phase | 1-Phase |
Exhaust Pipe | PVC |
Fuel Source | Natural Gas |
Gas Valve | Single Stage |
Max Overcurrent Protection | 15 amps |
Primary Heating Capacity | 35,001 - 40,000 BTU |
Product Height (in) | 34.5 |
Product Length (in) | 28.875 |
Product Width (in) | 17.5 |
System Application Type | Central Split Systems |
Vent Connection | 3 inches, 4 inches |
Voltage | 120 |
Warranty | 10 Year Parts, Lifetime Heat Exchanger, 10 Year Unit Replacement |
Weight (lbs) | 111.0000 |
California Residents | see Prop 65 WARNING |