This product has been discontinued.
Overview
Is your home drafty and cold? But you still pay way too much for gas? A better and more energy efficient gas furnace like the Goodman GKS9 Series High-Efficiency Gas Furnace could be exactly what you need. Not only is this unit a great heater, it can also operate at up to 92.1% AFUE with a multi-speed blower motor. You get great warranty protection, and all models comply with California Low NOx emissions standards.
Affordability meets dependability in the GKS91 gas furnace from Goodman! This superior heating tool comes complete with a heavy-duty steel exterior and a finish that is made to withstand long term corrosion. Of course, the best part about this furnace may just be how quiet it truly is. Though a powerful machine that will quickly fuel your home with the temperature needed to keep it comfortable, it runs nearly silently so you won't be bothered by loud clinging and churning like past units. Also features a powerful tubular heat exchanger and a single-stage gas valve. Not to mention the multi-speed induced draft blower!
Worried about an issue? Don't, because Goodman designs its products to last for decades. In the event something does go wrong, your repair guy will be glad to know that the control board is placed on an easy-to-find area on this furnace. Plus, it comes with color-coded low-voltage terminals that makes adding an additional element simple. For example, you can attach a humidifier to this furnace if you want more exacting control over interior moisture.
Fueled by natural gas for propane, this furnace will likely reduce your monthly bill if you are upgrading from an outdated and lower efficiency model. It needs to be placed in an upright position to move air from your unit and to your home in an upwards direction. At 92% AFUE, every 92 cents of every $1 you spend will go to directly heating or cooling your home.

Manufacturer Highlights
The Goodman® brand GKS Series Gas Furnaces offer 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
- Dual-diameter tubular heat exchanger
- Single-stage combination redundant gas valve
- Hot surface igniter and patented adaptive learning control for long igniter life
- Quiet, four-speed direct-drive circulator blower motor
- Furnace control board with self-diagnostics and low-voltage terminal block Dual-certified for sealed combustion direct vent (2-pipe) or non-direct vent (1-pipe) applications
- Quiet, single-speed induced draft blower
- All models comply with California NOx emissions standards
Cabinet Features
- Foil-faced insulation lines the heat exchanger
- Designed for upflow installation; can be converted to horizontal left or right with a pressure switch kit (sold separately)
- Easy-to-install top venting is standard
- Airtight solid bottom for side return applications and easy-cut tabs for effortless removal in bottom air inlet applications
- Coil and furnace fit flush for most installations
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 | GKS91155DX |
---|---|
UPC | 663051484511 |
Gas Furnace Efficiency | 92-94% |
Air Flow Direction | Upflow |
Configuration | Floor Mounted |
Avg Coverage Area | 2,000 - 2,400 Sq Ft |
Blower Motor | Multi Speed |
Cooling Compatibility (up to) | 5 Ton |
Electrical Phase | 1-Phase |
Exhaust Pipe | PVC |
Fuel Source | Natural Gas |
Gas Valve | Single Stage |
Max Overcurrent Protection | 15 amps |
Primary Heating Capacity | 110,001 - 115,000 BTU |
Product Height (in) | 40 |
Product Length (in) | 28.75 |
Product Width (in) | 24.5 |
System Application Type | Central Split Systems |
Vent Connection | 4 inches |
Voltage | 120 |
Warranty | 10 Year Parts, Lifetime Heat Exchanger |
Weight (lbs) | 175.0000 |
California Residents | see Prop 65 WARNING |