12 kW1 Fortress Standby Generator System



Our dealer exclusive standby generator line offers the protection you are looking for in a generator system. Starting with our premium level of protection by offering a 6 year parts, labor and travel warranty, the longest in the industry. Also equipped with an oil warmer to help aid in cold weather starting when the temperatures drop below 30 degrees.

Now 60% quieter* and 50% smaller than our old 12kW1, you don’t have to compromise your home’s curb appeal to get the protection of automatic backup power. With its sleek, compact profile, the 12kW1Home Standby Generator adds new dimension to “Powering More for Less.” Perfect for smaller to medium-sized homes, the new 12kW1generator combined with our Symphony® II Power Management System allows you to meet the power needs of your whole house, (including up to two 4-ton air conditioners).
*Based on no load sound power.

Managed Whole House Power

Not all appliances are powered equally. Some, such as your central air conditioner, electric clothes dryer, electric stovetop, oven, or whirlpool tub, require a large amount of power to start up or operate properly.

The Symphony® II Power Management orchestrates these high-demand appliances with lower-demand items to give you true whole-house power with a smaller, more affordable generator.

Tech Specs

Running Watts (LP)* 12,000
Running Watts (NG)* 11,000
Engine Brand Briggs & Stratton
Engine Series Vanguard™
Engine Displacement (cc) 627
Operation Fully Automatic
Voltage (V) 120/240V AC, Single Phase, 1.0 pf
Running Amps (NG) 45.8
Alternator Type Computer Friendly
LP Fuel Consumption** 50% Load = 2.36 gal/hr
NG Fuel Consumption** 50% Load 119 ft3 /hr
Weekly Exerciser Yes
Battery/Battery Charger Yes
Overcrank Protection Yes
Diagnostic Alerts with Remote System Status Low Oil Shutdown, Engine Does Not Start, Low Frequency, Engine Overspeed, Low Voltage, Low Battery Voltage, Oil Temp High, Transfer Switch Fault
Fuel System Liquid Propane (LP) Gas, Natural Gas (NG)
Warranty (Product)*** 6 Year Parts, Labor & Travel Limited Warranty
Length (in) 28
Width (in) 26
Height (in) 37.2
Weight (lbs) 318
Running Amperage LP 50
Hour Meter Yes

*NG = Natural Gas; LP = Liquid Propane.
**Fuel consumption rates are estimated based on normal operating conditions at 1/2 load. Generator operation may be greatly affected by elevation and the cycling operation of multiple electrical appliances – fuel flow rates may vary depending on these factors.
***See Operator’s Manual for complete warranty details