20 kW1 Fortress Standby Generator System



The dealer exclusive Fortress line of standby generator offers premium protection. Offering a 6 year parts, labor and travel limited warranty, the longest warranty in the industry. Also equipped with an oil warmer to help aid in cold weather starting when the temperatures drop below 30 degrees.

Losing power is nothing to worry about any more with the 20 kW1generator. When the power goes out your backup generator seamlessly provides power to your home within seconds of a power outage. Lights, TVs, washer and dryer – even two 5-ton AC units – are easily and automatically powered by a dependable commercial-grade Vanguard™ engine and our patented Symphony® II Power Management technology.

Contact Dealers for pricing.

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)* 20,000
Running Watts (NG)* 18,000
Engine Brand Briggs & Stratton
Engine Series Vanguard™
Engine Displacement (cc) 993
Operation Fully Automatic
Voltage (V) 120/240V AC, Single Phase, 1.0 pf
Running Amps (NG) 75.0
Alternator Type Computer Friendly
LP Fuel Consumption** 50% Load = 2.31 gal/hr
NG Fuel Consumption** 50% Load = 187 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
Warranty (Product)*** 6 Year Parts, Labor & Travel Limited Warranty
Length (in) 48
Width (in) 34
Height (in) 31
Weight (lbs) 500
Running Amperage LP 83.3
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