The GR9S960403AN Goodman gas furnace features high-quality construction and efficient operation at a great value. The GR9S960403AN single-stage, 9-speed furnace utilizes Goodman's superior heat exchanger design to provide efficient, reliable heating to your home. If you're looking to cut your energy bills and improve your comfort without breaking the bank, your search stops with the Goodman GR9S960403AN.
The GR9S960403AN Goodman gas furnace is 40,000 BTU's, which is the smallest Goodman furnace size currently available. This BTU count is a measure of the input of the furnace per hour, while the output of this furnace is 38,400 BTU's (40,000 X 96% AFUE) per hour. In ideal climate conditions, this 40,000 BTU furnace is usually used to heat a small house.
The GR9S960403AN Goodman gas furnace is 96% efficient, and the standard furnace efficiency on the market today. This means that 96% of the gas going into the furnace is used to heat your home and the remaining 4% is lost out of the flue venting. Please note that all 90% or higher AFUE furnaces must be vented using plastic/PVC flue venting, while anything lower must be vented using metal venting.
The GR9S960403AN Goodman gas furnace is a single stage furnace has only one heat output. Regardless of the indoor temperature, this furnace will burn at 100% output whenever the thermostat calls for it. Like a light switch, this furnace's burner will either be on or off and nothing in between. A single stage furnace is the standard efficient furnace since every time your furnace turns on the furnace uses the same amount of energy.
From the factory, the GR9S960403AN runs on natural gas. However all Goodman gas furnaces can be converted to propane using the furnace's corresponding LP conversion kit, an optional accessory at an additional cost that consists of a replacement set of orifices and springs.
Instead of the last generation PSC blower motor, the GR9S960403AN utilizes a 9-speed ECM motor, which uses less power and provides smarter air circulation. All of this causes an overall increase in the electrical efficiency of your furnace, which saves you money.
With installation that follows your state and local codes and with online registration, all Goodman furnaces come with a 10-year parts and lifetime heat exchanger warranty through the manufacturer.
The hot surface igniter on modern Goodman furnaces are more durable than previous designs, decreasing related issues and lowering maintenance costs. These hot surface ignitors are also more efficient than standing pilot and older HSI designs, saving you even more money.
The Goodman brand has improved technology from years of production experience, allowing for a long-lasting product that rarely has any issues. However, if something does go wrong on the furnace, the control board has a set of sensors that allow it to diagnose basic issues, allowing for easy troubleshooting and to notify the owner if basic maintenance or warranty work is recommended. This increases the overall safety of the unit, for the furnace itself and the occupants of the home where it is installed.
The heavy-gauge steel cabinet on new Goodman furnaces provide adequate protection to the internal mechanisms of the unit. The cabinet is also more air-tight than previous models, allowing for a quiet, more economical unit due to losing less heat and preventing more sound from exiting the unit.
The value of modern Goodman furnaces doesn't end at efficiency. Today's Goodman furnaces feature many different connection options to reduce installation. The GR9S960403AN model has a more universal design, which consists of its ability to be installed in both an upflow or horizontal configuration. This allows for an easier installation in more locations, from your attic to your basement. The furnace also comes with color-coded low-voltage terminals that allow for a shorter and easier installation time, which decreases installation costs.
Please note that this furnace requires a drain kit if installed horizontally. Upflow configurations do not require the kit.
Buyers report fast delivery—sometimes within 27 hours or 5 days—with units like the 80% AFUE 120,000 BTU model heating a 2,100 sq ft home in Northern New Jersey comfortably and a 3-bedroom, 1,320 sq ft house installed for under $1,500 including delivery. Many completed DIY installations with professional check‑offs, noted quiet operation and compact size, and replaced older systems lasting 17 to 30 years, though some cited shipping damage, missing paperwork or instructions, and warranty requirements for certified technician troubleshooting.
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For over three decades Goodman has concentrated on something more important than simple brand recognition consumer advertising. They focus on the design, engineering, and manufacturing of dependable products that have helped millions and millions of homeowners achieve reliable, high-quality, and affordable indoor comfort. In addition, Goodman has earned the loyalty and respect from thousands of local independent heating and cooling professionals across North America.
