20 kW1 FORTRESS Standby Generator

Back-up power for medium
to large sized homes

Featuring a 10-year limited warranty including parts, labor, and travel for all
10 years, this generator will be ready to run when it’s needed most.

20

kW

993cc

Displacement

3600

RPM

10 Year

Limited Warranty

Symphony II®

Thanks to Symphony® II Power Management System, a smaller home generator system by Briggs & Stratton can meet all your needs and save you money in the process.

Durable Enclosure

Designed to weather the elements, the system’s enclosure is made from automotive-grade Galvanneal steel to resist rust. Its advanced powder coat paint process results in years of protection against chips and abrasions.

Superior Customer Support

Shopping for the right standby generator for your home can be confusing, but Briggs & Stratton will be with you every step of the way. Complete our web form below or visit the Customer Support portal to get your questions answered.

Commercial-Grade Engine

A commercial-grade Vanguard™ engine means powerful performance when it matters most.

Flexible Placement3

Have a tight lot line? Worried about your curb appeal? Install your generator as close as 18″ from your home. Our generators are in compliance with the stringent National Fire Protection Agency 37 standard.

Financing Solution

We have partnered with Synchrony to provide financing solutions that fit your needs. Special financing* is available on qualified Briggs & Stratton Standby Generators on the Briggs & Stratton Standby Power Credit Card.
*Subject to credit approval Minimum monthly payments required.

20 kW1 Fortress Standby Generator Specs

20 kW1 Fortress Standby Generator Specs Transfer Switch

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. 100-04 (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 odorless, 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.