2020 20kW1 Fortress Standby Generator 040609 - Briggs & Stratton

2020 20kW1 Fortress Standby Generator 040609 - Briggs & Stratton

A perfect fit for any home, the 20kW1 Fortress standby generator powers all of a home's electrical needs easily and automatically. Keep your family safe, comfortable and free from the stress that comes with power outages.


    • InfoHub™ Wireless Monitoring: Lets you monitor your generator's status on your computer, tablet or smartphone sending maintenance reminders so your generator is always ready for the next power outage. Click here for more information.
    • Commercial Vanguard™ Engine: Our in-house state of the art equipment to enhance part control which makes the Vanguard™ Engine one of the best in the industry. For the dirty demanding environments, this engine is built to last.
    • Symphony® II Power Management: Manages the distribution of power to your selected appliances automatically. Load management ensures the generator won't overload and shutdown so your family can continue with its daily routine.
    • Best in Class Warranty: Covers parts, labor and travel for the full-length of the warranty.2
    • Assembled and Engineered in the USA: With domestic and foreign parts.
    • Corrosion Resistant: Durable enclosure made from automotive-grade galvanneal steel to resist rust. Its advanced powder coat paint process results in years of protections against chips and abrasions.
    • Flexible Placement Options: Includes the ability to install your generator as close as 18 inches from your home.3
    • Low Idle Mode: Scheduled weekly test mode that runs at a low RPM for fewer disturbances and less fuel consumption. (Only on model #s 040587, 040589, 040609)
    • Superior Customer Support: Our product is backed by our nationwide dealer network and call center experts. Please click here or visit the customer support portal to get your questions answered.
    • Financing Solution: We have partnered with Synchrony Bank to provide financing solutions that fit your needs. Special financing4 is available on qualified Briggs & Stratton Standby Generators only with the Standby Power Credit Card.
    • Description


      • Model: 040609
      • Running kW (NG)*: 18
      • Running Amps (NG)*: 83.3
      • Phase: 1-Phase
      • Frequency (Hz): 60
      • Voltage (V): 120/240
      • Sound Level (dBA) at 7 Meters: Low Idle Mode - 64 No Load - 67
      • LP Fuel Consumption at 50% Load** (BTU/hr): 152,000
      • Width (in): 32.9
      • Weight (lbs): 440
      • Weekly Exerciser: 6 Exercise Length Options
      • Running kW (LP)*: 20
      • Running Amps (LP)*: 75.5
      • Engine Brand: Vanguard®
      • Circuit Breaker Amps: 100
      • Engine Displacement (cc): 993
      • Enclosure Materials: Aluminum
      • NG Fuel Consumption at 50% Load** (BTU/hr): 150,000
      • Length (in): 50.5
      • Height (in): 31
      • Warranty (Product)***: 10 Year
      • Battery Charger: Included


      1 This generator is rated in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies) and CSA (Canadian Standards Association) standard C22.2 No.100-14 (motors and generators). 2 See operator's manual or BRIGGSandSTRATTON.com for complete warranty details. 3 Installations must strictly comply with all applicable codes, industry standards, laws, regulations and provided installation manual. Running engines give off carbon monoxide, an ordorless, colorless, poisonous gas, so it is important to keep exhaust gas away from any windows, doors, ventilation intakes or crawl spaces. The installation manual contains specific instructions related to generator placement in addition to NFPA 37, including the requirement that carbon monoxide detectors be installed and maintained in your home or business.

    • Specs

      Availability Brochure
      Style Residential Generators
      Displacement 993 cc
      Engine Type Vanguard®
      Noise Level Low Idle Mode - 64 No Load - 67 dBA at 7 Meters
      Weight 440 lb.