GM9S960403BU 40,000 BTU 96% AFUE Single Stage Goodman Gas Furnace Ultra-Low NOx California Model - Upflow/Horizontal

40,000 BTU
The GM9S960403BU 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.

96% Efficiency Rating
The GM9S960403BU 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 96% furnaces must be vented using plastic/PVC flue venting.

Ultra-low NOx furnaces are only available in natural gas configurations. If you need a propane furnace, you will need to order a standard furnace and add a propane conversion kit to it. A standard version of the GM9S960403BU does not exist. The next closest model is the GM9S960603BN. Please note that this model is 20,000 BTUs more than the GM9S960403BU.

Single Stage Furnace
The GM9S960403BU 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.

9-Speed ECM Blower Motor
Instead of the last generation PSC blower motor, the GM9S960403BU 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.

Warranty
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.

Durable Hot Surface Igniter
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.

Self-Diagnostic Control Board
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.

Heavy Gauge Steel Cabinet
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.

Ease of Installation
The value of modern Goodman furnaces doesn't end at efficiency. Today’s Goodman furnaces feature many different connection options to reduce installation. The GM9S960403BU 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.